| Family | Scientific Name | Subspecific Category | County | Locality | Tshp•Range•Sec. | Collector's Notes |
Collector | Collection Number |
Collection Date |
Collection Year |
Special Notes and Annotations |
Accession Number |
| Acanthaceae | Ruellia ciliosa Pursh | . | Lee. | E. of Farmington | . | Prairie banks along R.R. in timbered section | Shimek, Bohumil | . | 8/30/1923 | 1923 | Fred A. Barkley, Ruellia humilis Nutt., 1946. Robert A. Davidson, as determined, 04-03-1956 | 2574 |
| Acanthaceae | Ruellia humilis Nutt. | . | Johnson. | 2 miles south of Iowa City | . | Remnant prairie along C.R.I. & P. RR., | Thorne, Robert F. | 18326 | 9/30/1956 | 1956 | . | 4487 |
| Adoxaceae | Adoxa moschatellina L. | . | Dubuque. | White Pine Hollow State Forest, 3 miles NW of Luxemburg. Liberty twnshp. Secs. 6,7,8. | . | Limestone talus in cool air drainage on N-facing slope | Thorne, Robert F. | 14034 | 5/15/1954 | 1954 | Iowa Nat. Areas Inventory Jeanne W. Bates 1983-08-05 | 4598 |
| Adoxaceae | Sambucus canadensis L. | . | Cerro Gordo. | North shore of Ventura Marsh | T99N_R22W_Sec19 | Damp shoreline | Begres, F. M. | . | 7/23/1968 | 1968 | Original i.d.: Sambucus canadensis L. Annotation: W.R.Norris 8/2001. See Caprifoliaceae in Eilers & Roosa [1994]. | 5313 |
| Adoxaceae | Sambucus canadensis L. | . | Dickinson. | 3 m. SW of Lakeside Lab. | . | Hanging bog. | Conard, H. S. | . | 7/17/1923 | 1923 | Original i.d.: Sambucus canadensis L. Annotation: W.R.Norris 8/2001. See Caprifoliaceae in Eilers & Roosa [1994]. | 1220 |
| Adoxaceae | Sambucus canadensis L. | . | Dickinson. | Iowa Lakeside Laboratory | . | Wood edge, shrub. Fls white in cymes | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/16/1973 | 1973 | Original i.d.: Sambucus canadensis L. Annotation: W.R.Norris 8/2001. See Caprifoliaceae in Eilers & Roosa [1994]. | 5166 |
| Adoxaceae | Sambucus canadensis L. | . | Dickinson. | S. of Emerson's Bay, W. Lake Okoboji | . | Woods | Shimek, Bohumil | . | 8/10/1910 | 1910 | Original i.d.: Sambucus canadensis L. Annotation: W.R.Norris 8/2001. See Caprifoliaceae in Eilers & Roosa [1994]. | 1221 |
| Adoxaceae | Sambucus canadensis L. | . | Johnson. | S. of Hills | . | Alluvial woods | Shimek, Bohumil | . | 7/8/1905 | 1905 | Original i.d.: Sambucus canadensis L. Annotation: W.R.Norris 8/2001. See Caprifoliaceae in Eilers & Roosa [1994]. | 2690 |
| Adoxaceae | Viburnum lentago L. | . | Dickinson. | E. of Arnold's Park | . | Woods | Shimek, Bohumil | . | 7/15/1912 | 1912 | See Caprifoliaceae in Eilers & Roosa [1994]. | 1799 |
| Adoxaceae | Viburnum lentago L. | . | Dickinson. | East side of W. Lake Okoboji | . | Woods | Shimek, Bohumil | . | 08/04/1899 | 1899 | See Caprifoliaceae in Eilers & Roosa [1994]. | 2699 |
| Adoxaceae | Viburnum lentago L. | . | Dickinson. | Elmcrest | . | . | Conard, H. S. | . | 7/5/1923 | 1923 | See Caprifoliaceae in Eilers & Roosa [1994]. | 1227 |
| Adoxaceae | Viburnum lentago L. | . | Dickinson. | Iowa Lakeside Laboratory | . | Wooded lake edge. Shrub | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/19/1973 | 1973 | See Caprifoliaceae in Eilers & Roosa [1994]. | 5027 |
| Adoxaceae | Viburnum lentago L. | . | Dickinson. | S. of Laboratory, W. Okoboji Lake | . | Woods | Shimek, Bohumil | . | 8/4/1910 | 1910 | See Caprifoliaceae in Eilers & Roosa [1994]. | 1225 |
| Adoxaceae | Viburnum lentago L. | . | Dickinson. | S. side of Center Lake. | . | Woods | Shimek, Bohumil | . | 5/26/1912 | 1912 | See Caprifoliaceae in Eilers & Roosa [1994]. | 2701 |
| Adoxaceae | Viburnum lentago L. | . | Dickinson. | Silver Lake. Sec. 33, NW-SW. | T100N_R38W_Sec33 | Sandy bank. Shrub, 5' | Grant, Martin L. | 8947 | 8/11/1948 | 1948 | See Caprifoliaceae in Eilers & Roosa [1994]. | 1226 |
| Adoxaceae | Viburnum lentago L. | . | Emmet. | W. of Estherville | . | Upland woods. | Shimek, Bohumil | . | 08/03/1899 | 1899 | See Caprifoliaceae in Eilers & Roosa [1994]. | 2700 |
| Adoxaceae | Viburnum rafinesqueanum Schult. | . | Cedar. | Edge of Clear Creek. Pioneer twnshp. | . | Top of limestone ledge. | Fay, M.J. | 1467 | 8/16/1950 | 1950 | See Caprifoliaceae in Eilers & Roosa [1994]. | 2703 |
| Adoxaceae | Viburnum rafinesqueanum Schult. | . | Clay. | Wanata State Park, 1/2 mile south of Peterson on Little Sioux River. Sec. 33, S 1/2. | T94N_R38W_Sec33 | Rich woods. Small shrub | Thorne, Robert F. | 14486 | 8/3/1954 | 1954 | See Caprifoliaceae in Eilers & Roosa [1994]. | 4525 |
| Adoxaceae | Viburnum rafinesqueanum Schult. | . | Emmet. | . | . | . | Cratty, R.I. | . | . | . | Original i.d.: V. pubescens Pursh. Annotation: Robert F. Thorne, 1955. [No date given]. See Caprifoliaceae in Eilers & Roosa [1994]. | 2702 |
| Adoxaceae | Viburnum rafinesqueanum Schult. | . | Winneshiek. | Decorah | . | Upland woods. | Shimek, Bohumil | . | 9/14/1901 | 1901 | Original i.d.: V. dentatum L. Annotation: Robert F. Thorne, 1955. See Caprifoliaceae in Eilers & Roosa [1994]. | 2352 |
| Amaranthaceae | Amaranthus blitoides S. Watson | . | Dickinson. | Iowa Lakeside Laboratory, Lake Okoboji | . | Campus garden | Conard, H. S. | . | 8/13/1923 | 1923 | Annot.: = A. graecizans [anon.] | 469 |
| Amaranthaceae | Amaranthus blitoides S. Watson | . | Dickinson. | S. of Miller's Bay, W. Lake Okoboji | . | Waste places | Shimek, Bohumil | . | 8/19/1909 | 1909 | Annot.: = A. graecizans [anon.] | 468 |
| Amaranthaceae | Amaranthus graecizans L. | . | Dickinson. | Found along roadside at the Wahpeton city dump, 1/4 mile north of Lakeside Lab. | . | Roadway | Chilton, Mike | . | 8/9/1958 | 1958 | . | 2588 |
| Amaranthaceae | Amaranthus graecizans L. | . | Osceola. | Ocheyden Mound | T99N_R40W_Sec12 | Short grass prairie | Grant, Martin L. | 14842 | 8/8/1963 | 1963 | . | 4640 |
| Amaranthaceae | Amaranthus graecizans L. | . | Dickinson. | Arend's Kettlehole. Sec. 33, SW1/4 . | T99N_R37W_Sec33 | Mud flat | Grant, Martin L. | 8909 | 8/9/1948 | 1948 | . | 470 |
| Amaranthaceae | Amaranthus graecizans L. | . | Dickinson. | Iowa Lakeside Laboratory, Lake Okoboji | . | Garden west of lab. | Conard, H. S. | . | 8/8/1923 | 1923 | . | 471 |
| Amaranthaceae | Amaranthus graecizans L. | . | Dickinson. | Iowa Lakeside Laboratory | . | Roadside | Bloethe, D., K. Cogan, & S. Pedersen | . | 8/3/1973 | 1973 | . | 5068 |
| Amaranthaceae | Amaranthus retroflexus L. | . | Dickinson. | Iowa Lakeside Laboratory | . | Edge of garden, height 1-1.5 m. | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/26/1973 | 1973 | . | 5055 |
| Amaranthaceae | Amaranthus retroflexus L. | . | Dickinson. | Sec. 10, NE1/4. | T98N_R37W_Sec10 | Cultivated field | Byerly, Dale M. | . | 7/24/1957 | 1957 | . | 2589 |
| Amaranthaceae | Amaranthus retroflexus L. | . | Dickinson. | Iowa Lakeside Lab., found between cabins and laboratories along road of lab. | . | Roadside (dry). | Chilton, Mike | . | 7/25/1958 | 1958 | . | 2590 |
| Amaranthaceae | Amaranthus retroflexus L. | . | Dickinson. | S. of Milford. Sec. 12, SE1/4. | T98N_R37W_Sec12 | R.R. ballast | Grant, Martin L. | 12467 | 8/10/1954 | 1954 | . | 2496 |
| Amaranthaceae | Amaranthus retroflexus L. | . | Dickinson. | S. of Miller's Bay, W. Lake Okoboji | . | Waste places | Shimek, Bohumil | . | 8/19/1909 | 1909 | . | 472 |
| Amaranthaceae | Amaranthus retroflexus | . | Dickinson. | Iowa Lakeside Laboratory, Lake Okoboji | . | Campus | Conard, H. S. | . | 8/4/1923 | 1923 | . | 473 |
| Amaranthaceae | Amaranthus tamariscinus Nutt. | . | Dickinson. | Cayler Prairie. Lakeville twnshp. Sec. 17, W 1/2. | . | Male. Desiccated margin, southwest pond. | Thorne, Robert F. | 16284 | 8/6/1955 | 1955 | . | 4396 |
| Amaranthaceae | Amaranthus tamariscinus Nutt. | . | Dickinson. | Crescent Inn | . | . | Conard, H. S. | . | 8/16/1923 | 1923 | Original i.d.: Acnida tuberculata Moq. Annot.: Martin L. Grant, A. tamariscina (Nutt.) Wood, Male, (at least female plants from same locality are) 1954; = Amaranthus tamaricinus Nutt. [anon.] | 466 |
| Amaranthaceae | Amaranthus tamariscinus Nutt. | . | Dickinson. | Crescent Inn | . | . | Conard, H. S. | . | 8/16/1923 | 1923 | Original i.d.: Acnida tuberculata Moq. Annot.: Martin L. Grant, Female A. tamariscina (Nutt.) Wood. 1954; = Amaranthus tamaricinus Nutt. [anon.] | 465 |
| Amaranthaceae | Amaranthus tamariscinus Nutt. | . | Dickinson. | Crossroads pond | T99N_R37W_Sec35 | Former cornfield, dewatered | Luchen, Mary Alyce & R. F. Thorne | 67 | 8/11/1961 | 1961 | . | 4663 |
| Amaranthaceae | Amaranthus tamariscinus Nutt. | . | Dickinson. | NW of Miller's Bay, W. Lake Okoboji | . | Swamp border | Shimek, Bohumil | . | 8/12/1910 | 1910 | Original i.d.: Acnida tuberculata Moq. Annot.: A. tamariscina (Nutt.) Wood Martin L. Grant, 1954 [female symbol given]; = Amaranthus tamaricinus [sic] Nutt. [anon.] | 467 |
| Amaranthaceae | Amaranthus tamariscinus Nutt. | . | Emmet. | Four Mile Lake | . | . | Conard, H. S. | . | 7/14/1923 | 1923 | Original i.d.: Acnida tuberculata Moq. Annot.: Martin L. Grant, [male symbol] Prob. A. tamariscina (Nutt.) Wood, 1954; = Amaranthus tamaricinus Nutt. [Anon.] | 464 |
| Amaranthaceae | Amaranthus tamariscinus Nutt. | . | Lyon. | Gitchie Manitou | . | Male. Wooded river bank | Grant, Martin L. | 12492 | 8/12/1954 | 1954 | Original i.d.: Acnida tamariscina (Nutt.) Wood. Annot.: = Amaranthus tamaricinus Nutt. [anon.] | 2495 |
| Amaranthaceae | Amaranthus tamariscinus Nutt. | . | Lyon. | Gitchie Manitou | T100N_R49W_Sec11 | Pool margin, alluvial, 5 feet tall | Grant, Martin L. | 14845 | 8/8/1963 | 1963 | Original i.d.: Acnida altissima Riddell. Annot.: = Amaranthus tamariscinus Nutt., Aug. 1980, L. Eilers. | 4639 |
| Amaranthaceae | Amaranthus tamariscinus Nutt. | . | Lyon. | NW corner of Lyon County | . | Lower places around Jasper Pool | Shimek, Bohumil | . | 8/22/1934 | 1934 | Original i.d.: Acnida tuberculata Moq. Annot.: Amaranthus tamariscinus Nutt., J.D. Sauer, Herb. of Univ. of Wisconsin | 2591 |
| Amaranthaceae | Amaranthus tuberculatus (Moq.) J.D.Sauer | . | Dickinson. | North shore Little Miller's Bay | . | Wet ground. Note-- staminate plant | Shook, A. D. & E. O. Beal | 86 | 8/10/1950 | 1950 | Original id.: Acnida tamariscina (Nutt.) Wood | 604 |
| Amaranthaceae | Atriplex patula L. | . | Johnson. | Near river Iowa City | . | . | Anderson, W. A. | . | 11/22/1931 | 1931 | [Date is Nov.]. County not listed by collector, but location is distinct. See Chenopodiaceae in Eilers & Roosa [1994]. | 3151 |
| Amaranthaceae | Chenopodium album L. | . | Dickinson. | Along fence south of labs on campus of Lakeside Lab. | . | Mid-prairie | Chilton, Mike | . | 7/25/1958 | 1958 | See Chenopodiaceae in Eilers & Roosa [2011]. | 3152 |
| Amaranthaceae | Chenopodium album L. | . | Dickinson. | Cayler Prairie. Lakeville twnshp. Sec. 17, W 1/2. | . | Hardpacked roadway, extreme northwest corner of tract. | Thorne, Robert F. | 16357 | 8/14/1955 | 1955 | See Chenopodiaceae in Eilers & Roosa [2011]. | 4392 |
| Amaranthaceae | Chenopodium album L. | . | Dickinson. | Floete Prairie | . | Marshy prairie slough | Zylstra, Connie | . | 8/9/1958 | 1958 | See Chenopodiaceae in Eilers & Roosa [2011]. | 3153 |
| Amaranthaceae | Chenopodium album L. | . | Dickinson. | Iowa Lakeside Laboratory | . | Open grassy area | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/17/1973 | 1973 | See Chenopodiaceae in Eilers & Roosa [2011]. | 4973 |
| Amaranthaceae | Chenopodium album L. | . | Dickinson. | Miller's Bay | . | . | Conard, H. S. | . | 8/4/1923 | 1923 | Chenopodium album L., APK. Prob.! [anon.] | 455 |
| Amaranthaceae | Chenopodium ambrosioides L. | . | Dickinson. | Hotel Orleans | . | Sand | Shimek, Bohumil | . | 8/16/1909 | 1909 | Annot.: C. leptophylllum, Robert F. Thorne, 1953; = C. desiccatum A. Nels. [anon.]. See Chenopodiaceae in Eilers & Roosa [2011]. | 456 |
| Amaranthaceae | Chenopodium boscianum Moq. | . | Dickinson. | Miller's Bay | . | . | Conard, H. S. | . | 8/4/1923 | 1923 | See Chenopodiaceae in Eilers & Roosa [2011]. | 458 |
| Amaranthaceae | Chenopodium boscianum Moq. | . | Dickinson. | S. of Miller's Bay, W. Lake Okoboji. | . | . | Shimek, Bohumil | . | 8/19/1909 | 1909 | See Chenopodiaceae in Eilers & Roosa [2011]. | 457 |
| Amaranthaceae | Chenopodium glaucum L. | . | Dickinson. | Millers' Bay, West Lake Okoboji. Lakeville twnshp. Sec. 23. | . | Sandspit | Thorne, Robert F. | 9810 | 8/17/1950 | 1950 | See Chenopodiaceae in Eilers & Roosa [2011]. | 4393 |
| Amaranthaceae | Chenopodium glaucum L. | . | Dickinson. | Shore of Miller's Bay, on Floete place. | . | . | Conard, H. S. | . | 8/17/1923 | 1923 | See Chenopodiaceae in Eilers & Roosa [2011]. | 459 |
| Amaranthaceae | Chenopodium hybridum L. | . | Dickinson. | Elmcrest | . | . | Conard, H. S. | . | 7/9/1923 | 1923 | C. h. var. gigantospermum (Aellen) Rout., Martin L. Grant, 1960. equals C. hybridum L. [anon.] | 461 |
| Amaranthaceae | Chenopodium hybridum L. | . | Dickinson. | Iowa Lakeside Laboratory | . | N 40, hillside | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/23/1973 | 1973 | See Chenopodiaceae in Eilers & Roosa [2011]. | 4974 |
| Amaranthaceae | Chenopodium hybridum L. | . | Dickinson. | Iowa Lakeside Laboratory | . | Woods east and south of laboratory buildings. | Severe, Doris | 58 | 8/9/1957 | 1957 | See Chenopodiaceae in Eilers & Roosa [2011]. | 3155 |
| Amaranthaceae | Chenopodium hybridum L. | . | Dickinson. | Lakeside Lab., north of furthermost east lab. | . | Near buildings. 18 in. stem removed | Chilton, Mike | . | 8/16/1958 | 1958 | See Chenopodiaceae in Eilers & Roosa [2011]. | 3154 |
| Amaranthaceae | Chenopodium hybridum L. | . | Dickinson. | S. of Miller's Bay, W. Lake Okoboji | . | Woods | Shimek, Bohumil | . | 8/11/1909 | 1909 | See Chenopodiaceae in Eilers & Roosa [2011]. | 460 |
| Amaranthaceae | Chenopodium leptophylllum (Moq.) Nutt. | . | Dickinson. | Along Emerson's Bay, W. Lake Okoboji. | . | Woods | Shimek, Bohumil | . | 8/4/1910 | 1910 | [ = C. desiccatum A. Nels. [anon.]] | 462 |
| Amaranthaceae | Chenopodium leptophylllum (Moq.) Nutt. | . | Louisa. | E. of Grandview, Muscatine Isl. | . | Open sandy places. | Shimek, Bohumil & P.C. Myers | . | 08/01/1897 | 1897 | [= C. desiccatum A. Nels. [anon.]]. See Chenopodiaceae in Eilers & Roosa [2011]. | 2149 |
| Amaranthaceae | Chenopodium paganum Rchb. | . | Pocahontas. | Kalsow Prairie | . | Prairie | Grant, Martin L. | 12374 | 7/28/1954 | 1954 | See Chenopodiaceae in Eilers & Roosa [2011]. | 2491 |
| Amaranthaceae | Chenopodium pratericola Rydb. | . | Johnson. | Cedar twnshp. Sec. 12, SW 1/2. | . | Sandy roadside and bank. | Thorne, Robert F. | 13641 | 9/26/1953 | 1953 | See Chenopodiaceae in Eilers & Roosa [2011]. | 4456 |
| Amaranthaceae | Chenopodium rubrum L. | . | Dickinson. | . | T99N_R37W_Sec23 | Sand spit, wet sandy soil. | Shook, A. D. & E. O. Beal | 83 | 8/9/1950 | 1950 | Iowa Nat. Areas Inventory Jeanne N. Bates 1983-08-05. See Chenopodiaceae in Eilers & Roosa [2011]. | 603 |
| Amaranthaceae | Chenopodium rubrum L. | . | Dickinson. | Silver Lake | . | Edge of pond. | Conard, H. S. | . | 9/13/1949 | 1949 | Iowa Nat. Areas Inventory Jeanne N. Bates 1983-08-05. [This is not on one of Conard's label but it is 1949]. See Chenopodiaceae in Eilers & Roosa [2011]. | 1754 |
| Amaranthaceae | Chenopodium rubrum L. | . | Dickinson. | Silver Lake | . | Pond margin, silt. Annual, 4' high, leaves fleshy. | Grant, Martin L. | 11273 | 8/15/1949 | 1949 | Iowa Nat. Areas Inventory Jeanne N. Bates 1983-08-05. See Chenopodiaceae in Eilers & Roosa [2011]. | 1755 |
| Amaranthaceae | Chenopodium rubrum L. | . | Dickinson. | Slough south of Silver Lake. Silver Lake twnshp. | T100N_R38W_Sec32 | . | Thorne, Robert F. | 13428 | 8/16/1953 | 1953 | Iowa Nat. Areas Inventory Jeanne N. Bates 1983-08-05. See Chenopodiaceae in Eilers & Roosa [2011]. | 4394 |
| Amaranthaceae | Chenopodium standleyanum Aellen | . | Johnson. | E 1/2 of sec. 27. Cedar twnshp. | T81N_R5W_Sec27 | Open, pastured woods | Thorne, Robert F. | . | 10/1/1955 | 1955 | See Chenopodiaceae in Eilers & Roosa [2011]. | 4457 |
| Amaranthaceae | Chenpodium gigantospermum FGP | . | Dickinson. | Plants of three representative areas of the east shore of West Okoboji Lake. | T99N_R37W_Sec12 | Open woods. Oak woods. NW1/4 sec. 12. | Naffziger, Joyce | 107 | 8/4/1961 | 1961 | Chenopodiaceae of Eilers & Roosa [1994]. original i.d.: Chenopodium hybidum L. Annotation by DA 6-00. Chenopodium simplex (Torrey) Rafinesque in FNA vol. #4. | 5582 |
| Amaranthaceae | Cycloloma atriplicifolium (Spreng.) Coult. | . | Johnson. | Cedar twnshp. Sec. 12, SW 1/4. | . | Sandy roadside and bank | Thorne, Robert F. | 13645 | 9/26/1953 | 1953 | See Chenopodiaceae in Eilers & Roosa [2011]. | 4458 |
| Amaranthaceae | Cycloloma atriplicifolium (Spreng.) Coult. | . | Louisa. | Columbus Junction | . | Sandy alluvial open places. | Shimek, Bohumil | . | 8/27/1903 | 1903 | As determined, Robert A. Davidson, 04-15-1953. See Chenopodiaceae in Eilers & Roosa [2011]. | 3156 |
| Amaranthaceae | Cycloloma atriplicifolium (Spreng.) Coult. | . | Louisa. | NE part of Louisa Co. | . | Big Sand Mound | Shimek, Bohumil | . | 10/6/1921 | 1921 | See Chenopodiaceae in Eilers & Roosa [2011]. | 2150 |
| Amaranthaceae | Froelichia floridana (Nutt.) Moq. | . | Muscatine. | 8 mi. NW of Muscatine | . | Old open dunes near pond | Shimek, Bohumil | . | 8/31/1922 | 1922 | County not listed by collector, but location is distinct. | 2151 |
| Amaranthaceae | Kochia scoparia (L.) Roth | . | Dickinson. | Cayler Prairie. Lakeville twnshp. Sec. 17, W 1/2. | . | Hardpacked roadway, extreme northwest corner of tract. | Thorne, Robert F. | 16364 | 8/14/1955 | 1955 | See Chenopodiaceae in Eilers & Roosa [2011]. | 4395 |
| Amaranthaceae | Kochia scoparia (L.) Roth | . | Dickinson. | N. end Beck Canal, Miller's Bay, W. Lake Okoboji. | . | Weed in clearing | Grant, Martin L. | 13978 | 7/15/1959 | 1959 | Original i.d. reads: Kochia scoparia (L.) Roth ? equals var. culta Farw. See Chenopodiaceae in Eilers & Roosa [2011]. | 3943 |
| Amaranthaceae | Kochia scoparia (L.) Roth | . | Dickinson. | S. of Milford. Sec. 13, NW1/4. | T98N_R37W_Sec13 | Along RR. | Grant, Martin L. | 12450 | 8/10/1954 | 1954 | See Chenopodiaceae in Eilers & Roosa [2011]. | 2492 |
| Amaranthaceae | Kochia scoparia (L.) Roth | . | Johnson. | Fremont Twp. Sec. 32, NW 1/2. | . | Dump along bank above slough. | Thorne, Robert F. | 10805 | 7/5/1952 | 1952 | See Chenopodiaceae in Eilers & Roosa [2011]. | 4459 |
| Amaranthaceae | Kochia scoparia (L.) Roth | . | Lyon. | Gitchie Manitou | T100N_R49W_Sec11 | Pool margin, alluvial | Grant, Martin L. | 14846 | 8/8/1963 | 1963 | See Chenopodiaceae in Eilers & Roosa [2011]. | 4641 |
| Amaranthaceae | Kochia scoparia (L.) Roth | . | Lyon. | Sec. 16, SE-SE. | T100N_R48W_Sec16 | Roadside | Grant, Martin L. | 12506 | 8/12/1954 | 1954 | See Chenopodiaceae in Eilers & Roosa [2011]. | 2493 |
| Amaranthaceae | Salsola kali L. | . | Dickinson. | Along the shore east of Stony Point on Spirit Lake. | . | Lake shore. 18 in. stem removed | Chilton, Mike | . | 7/28/1958 | 1958 | See Chenopodiaceae in Eilers & Roosa [2011]. | 3158 |
| Amaranthaceae | Salsola kali L. | var. tenuifolia G. F. W. Meyer | Osceola. | Ocheyedan Mound | . | Prairie | Grant, Martin L. | 11221 | 7/29/1949 | 1949 | Can't find reference to var. tenuifolia G. F. W. Meyer only var. tenuifolia Tausch. | 528 |
| Amaranthaceae | Salsola kali L. | var. tenuifolia G. F. W. Meyer | Plymouth. | Sioux twnshp. Sec. 8. | T91N_R48W_Sec8 | Disturbed ground along roadside | Thorne, Robert F. | 14668 | 8/12/1954 | 1954 | Can't find reference to var. tenuifolia G. F. W. Meyer only var. tenuifolia Tausch. See Chenopodiaceae in Eilers & Roosa [2011]. | 4551 |
| Amaranthaceae | Salsola kali L. | var. tenuifolia Tausch. | Dickinson. | Along railroad south of Milford. | . | . | Conard, H. S. | . | 7/6/1923 | 1923 | See Chenopodiaceae in Eilers & Roosa [2011]. | 463 |
| Amaranthaceae | Salsola kali L. | var. tenuifolia Tausch. | Dickinson. | Spirit Lake, along NE edge . Sec. 15, SE 1/4. | T100N_R36W_Sec15 | On rocky shoreline | Adams, Doyle D. | . | 7/28/1958 | 1958 | See Chenopodiaceae in Eilers & Roosa [2011]. | 3157 |
| Amaranthaceae | Salsola kali L. | var. tenuifolia Tausch. | Dickinson. | Terrace Park | . | Beach | Grant, Martin L. | 12343 | 7/14/1954 | 1954 | See Chenopodiaceae in Eilers & Roosa [2011]. | 1918 |
| Amaranthaceae | Salsola kali L. | var. tenuifolia Tausch. | Osceola. | Ocheydan Mound | T99N_R40W_Sec12 | Short grass prairie | Grant, Martin L. | 14841 | 8/8/1963 | 1963 | See Chenopodiaceae in Eilers & Roosa [2011]. | 4642 |
| Amaranthaceae | Salsola kali L. | var. tenuifolia Tausch. | Plymouth. | Sec. 8, SW-SE. | T91N_R48W_Sec8 | Roadside | Grant, Martin L. | 12476 | 8/12/1954 | 1954 | See Chenopodiaceae in Eilers & Roosa [2011]. | 2492 |
| Anacardiaceae | Cotinus coggygria Scop. | . | Dickinson. | Miller's Bay | . | Cult., shrub, 6' high | Grant, Martin L. | 11174 | 6/30/1949 | 1949 | . | 886 |
| Anacardiaceae | Cotinus coggygria Scop. | . | Scott. | Davenport | . | Cultivated | Thorne, Robert F. | 2679 | 8/5/1950 | 1950 | . | 4614 |
| Anacardiaceae | Rhus glabra L. | . | Dickinson. | Iowa Lakeside Laboratory, W. Okoboji Lake | . | Prairie bank | Shimek, Bohumil | . | 8/27/1911 | 1911 | . | 2596 |
| Anacardiaceae | Rhus glabra L. | . | Dickinson. | East of Spirit Lake | . | Sand | Shimek, Bohumil | . | 8/6/1918 | 1918 | . | 2597 |
| Anacardiaceae | Rhus glabra L. | . | Dickinson. | Iowa Lakeside Laboratory, Lake Okoboji | . | Campus | Conard, H. S. | . | 7/4/1923 | 1923 | . | 887 |
| Anacardiaceae | Rhus glabra L. | . | Dickinson. | Iowa Lakeside Laboratory | . | Open area, weedy grasses and forbs, shrub or small tree, petiole glaucous, fruit red, DBH 2.5 cm. | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/15/1973 | 1973 | . | 5033 |
| Anacardiaceae | Rhus glabra L. | . | Dickinson. | Laboratory grounds | . | Border of grove, wooded banks | Shimek, Bohumil | . | 8/20/1911 | 1911 | . | 888 |
| Anacardiaceae | Rhus toxicodendron L. | . | Cerro Gordo. | Mason City, SW side of Buffalo Slough | . | Prairie openings above limestone ledges | Shimek, Bohumil | . | 8/23/1918 | 1918 | . | 2600 |
| Anacardiaceae | Rhus toxicodendron L. | . | Dickinson. | Iowa Lakeside Laboratory | . | Campus | Conard, H. S. | . | 7/4/1923 | 1923 | Robert F. Thorne, R. radicans L., 1955 | 890 |
| Anacardiaceae | Rhus toxicodendron L. | . | Dickinson. | Laboratory grounds | . | Border of grove | Shimek, Bohumil | . | 6/15/1912 | 1912 | Robert F. Thorne, R. radicans L. , 1955 | 889 |
| Anacardiaceae | Rhus toxicodendron L. | . | Lee. | Skunk River valley | . | . | Bartsch, Paul | . | 08/09/1895 | 1895 | R. radicans L., R.A. Davidson, Feb. 1954 | 2598 |
| Anacardiaceae | Rhus typhina L. | . | Clayton. | McGregor Heights | . | Upland woods | Shimek, Bohumil | . | 8/9/1922 | 1922 | . | 2246 |
| Anacardiaceae | Toxicodendron radicans L. | . | Dickinson. | Floete Prairie, 1/4 mile south of Lakeside Lab. | . | Mid-prairie. | Chilton, Mike | . | 7/25/1958 | 1958 | Rhus radicans L., LJE 1978 | 2599 |
| Anacardiaceae | Toxicodendron radicans L. | . | Dickinson. | Floete Prairie | . | Dry prairie, hillside | Zylstra, Connie | . | 6/25/1958 | 1958 | . | 2601 |
| Annonaceae | Asimina triloba (L.) Dunal | . | Jackson. | Bear Creek. Monmouth twnshp. | T84N_R1E_ Sec28&33 | Small trees to 4 in. DBH, 20 ft. high, base of south bluff | Thorne, Robert F. | 15702 | 10/23/1954 | 1954 | Iowa Nat. Areas Inventory Jeanne W. Bates 1983-08-05 | 4610 |
| Apiaceae | Anethum graveolens L. | . | Clay. | Gillette Grove | . | Cultivated garden | Buffington, David | . | 7/13/1958 | 1958 | . | 4277 |
| Apiaceae | Angelica atropurpurea L. | . | Worth. | Along Elk Creek. Bristol twnshp. Sec. 12, W 1/4. | . | . | Thorne, Robert F. | 19614 | 7/8/1958 | 1958 | Iowa Nat. Areas Inventory Jeanne W. Bates 1983-08-05 | 4616 |
| Apiaceae | Berula erecta (Huds.) Coville | . | Dickinson. | Silver Lake Bog | . | . | Anderson, W. A. | . | 6/26/1935 | 1935 | Iowa Nat. Areas Inventory Jeanne W. Bates 1983-08-05 | 946 |
| Apiaceae | Berula pusilla (Nutt.) Fern. | . | Dickinson. | NE Corner Silver Lake Fen. Sec. 32, SW-NW. | T100N_R38W_Sec32 | Fen, at lake shore | Grant, Martin L. | 14023 | 8/6/1959 | 1959 | Iowa Nat. Areas Inventory Jeanne W. Bates 1983-08-05. B. erecta (Huds.) Cav., L. Eilers, 1979 | 3986 |
| Apiaceae | Berula pusilla (Nutt.) Fern. | . | Dickinson. | Spooky Hollow. Sec. 5, NE-NE. | T98N_R37W_Sec5 | Creek bog. Vegetative growth only. Vegetative growth only | Grant, Martin L. | 14000 | 7/30/1959 | 1959 | Iowa Nat. Areas Inventory Jeanne W. Bates 1983-08-05. B. erecta (Herds.) Cav., L. Eilers, 1979 | 3965 |
| Apiaceae | Cicuta bulbifera L. | . | Cerro Gordo. | Mason City, Buffalo Slough, N. half (b) | . | Swamp | Shimek, Bohumil | . | 7/29/1922 | 1922 | County not listed by collector, but location is distinct. | 2274 |
| Apiaceae | Cicuta bulbifera L. | . | Dickinson. | Beck Canal. Sec. 23, SE-SE. | T99N_R37W_Sec23 | Canal margin | Grant, Martin L. | 11641 | 8/18/1952 | 1952 | . | 1485 |
| Apiaceae | Cicuta bulbifera L. | . | Dickinson. | S. of Miller's Bay | . | Swamp | Shimek, Bohumil | . | 8/13/1910 | 1910 | . | 948 |
| Apiaceae | Cicuta bulbifera L. | . | Emmet. | Four Mile Lake | . | . | Conard, H. S. | . | 8/14/1923 | 1923 | . | 947 |
| Apiaceae | Cicuta bulbifera L. | . | Hancock. | Pilot Knob Par, Dead Man's Lake | . | Marsh | Grant, Martin L. | 12519 | 8/21/1954 | 1954 | . | 4278 |
| Apiaceae | Cicuta maculata L. | . | . | E. of Iowa City | . | Low places along R.R. | Cavanagh, Lucy M . | . | 8/5/1914 | 1914 | . | 2428 |
| Apiaceae | Cicuta maculata L. | . | Clay. | Kirchner Prairie | . | Flat prairie adjacent to wetland. Plants common but widely scattered. | Insko, Mike & Todd Pietig | 6 | 7/12/2002 | 2002 | . | 5684 |
| Apiaceae | Cicuta maculata L. | . | Dickinson. | 3 m. SW of Lab. | . | Meadow near Little Sioux River. | Conard, H. S. | . | 7/17/1923 | 1923 | . | 950 |
| Apiaceae | Cicuta maculata L. | . | Dickinson. | Floete Prairie | . | Low wet prairie marsh. 4 feet removed from stem. | Zylstra, Connie | . | 7/25/1958 | 1958 | . | 4280 |
| Apiaceae | Cicuta maculata L. | . | Dickinson. | S. of Miller's Bay, W. Lake Okoboji | . | Low grounds | Shimek, Bohumil | . | 8/19/1909 | 1909 | . | 948 |
| Apiaceae | Cicuta maculata L. | . | Emmet. | . | . | . | Cratty, R.I. | . | . | . | ! M. Murley, July 1945. ! PHM 1952 | 4750 |
| Apiaceae | Cicuta maculata L. | . | Emmet. | Anderson Prairie State Preserve. | . | Dry prairie hill slope. | Elliott, Mike, Ben Mullarkey, Leanne Martin | . | . | . | . | 5619 |
| Apiaceae | Cicuta maculata L. | . | Muscatine. | E. of Bayfield | . | Low places along RR. | Shimek, Bohumil | . | 7/16/1920 | 1920 | . | 2275 |
| Apiaceae | Conium maculatum L. | . | Guthrie. | Springbrook Park | . | Roadside. Co. white, stem purple, spotted. | Grant, Martin L. | 11559 | 7/16/1952 | 1952 | . | 1776 |
| Apiaceae | Cryptotaenia canadensis (L.) DC. | . | Dickinson. | 2 miles W. of Milford | . | Upland woods along Little Sioux River | Severe, Doris | 6 | 7/18/1957 | 1957 | . | 4281 |
| Apiaceae | Cryptotaenia canadensis (L.) DC. | . | Dickinson. | East shore of West Okoboji Lake | T99N_R36W_Sec18 | Dense woods, Maple woods | Naffziger, Joyce | 51 | 8/11/1961 | 1961 | . | 5344 |
| Apiaceae | Cryptotaenia canadensis (L.) DC. | . | Dickinson. | East shore of West Okoboji Lake | T99N_R37W_Sec12 | Open woods, Oak woods. | Naffziger, Joyce | 12 | 8/4/1961 | 1961 | . | 5345 |
| Apiaceae | Cryptotaenia canadensis (L.) DC. | . | Dickinson. | Iowa Lakeside Lab. | . | Campus woods | Conard, H. S. | . | 7/4/1923 | 1923 | . | 952 |
| Apiaceae | Cryptotaenia canadensis (L.) DC. | . | Dickinson. | Iowa Lakeside Laboratory | . | Open grassy area on wood edge | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/17/1973 | 1973 | . | 4963 |
| Apiaceae | Cryptotaenia canadensis (L.) DC. | . | Dickinson. | Spring near Laboratory | . | Woods | Shimek, Bohumil | . | 6/22/1912 | 1912 | . | 951 |
| Apiaceae | Cryptotaenia canadensis (L.) DC. | . | Dickinson. | Sunset Beach. Sec. 30, SE-SW. | T99N_R36W_Sec30 | Tilia - ash forest. Co white | Grant, Martin L. | 12152 | 6/22/1954 | 1954 | . | 1976 |
| Apiaceae | Cryptotaenia canadensis (L.) DC. | . | Dickinson. | Woods north of Hayward's Bay, West Lake Okoboji | . | . | Shimek, Bohumil | . | 7/9/1918 | 1918 | . | 2022 |
| Apiaceae | Daucus carota L. | . | Dickinson. | East Lake Okoboji. Sec. 14, NW-NW. | T99N_R36W_Sec14 | Clearing in oak-ash forest | Grant, Martin L. | 13988 | 7/28/1959 | 1959 | . | 3953 |
| Apiaceae | Daucus carota L. | . | Dickinson. | Milford, 1 mi. no. | . | Roadside | Grant, Martin L. | 11571 | 7/28/1952 | 1952 | . | 1486 |
| Apiaceae | Daucus carota L. | . | Dubuque. | . | . | . | Bartsch, Paul | . | 07/04/1895 | 1895 | ! M. Murley, July 1945 | 4751 |
| Apiaceae | Eryngium yuccifolium Michx. | . | Dickinson. | Floete Prairie. Sec. 26, E-NW. | T99N_R37W_Sec26 | Prairie. Co white. Co white | Grant, Martin L. | 12443 | 8/6/1954 | 1954 | . | 2525 |
| Apiaceae | Eryngium yuccifolium Michx. | . | Dickinson. | Floete Prairie | . | Dry prairie hillside | Zylstra, Connie | . | 7/30/1958 | 1958 | . | 4282 |
| Apiaceae | Eryngium yuccifolium Michx. | . | Dickinson. | Floete Prairie | . | Prairie hilltop | Brown, Joseph H. | . | 8/6/1955 | 1955 | . | 4283 |
| Apiaceae | Eryngium yuccifolium Michx. | . | Dickinson. | S. of Miller's Bay | . | Prairie S. of mailbox | Shimek, Bohumil | . | 7/11/1912 | 1912 | . | 953 |
| Apiaceae | Heracleum lanatum Michx. | . | Dickinson. | Iowa Lakeside Laboratory, Lake Okoboji | . | Campus | Conard, H. S. | . | 7/4/1923 | 1923 | . | 955 |
| Apiaceae | Heracleum lanatum Michx. | . | Dickinson. | Iowa Lakeside Laboratory | . | Wooded water front | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/19/1973 | 1973 | Original i.d.: Heracleum maximum Bartr. Annot.: H. lanatum Michx., L. Eilers 1979 | 5051 |
| Apiaceae | Heracleum lanatum Michx. | . | Dickinson. | Iowa Lakeside Laboratory | . | Wooded water front | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/19/1973 | 1973 | Original i.d.: Heracleum maximum Bartr. Annot.: H. lanatum Michx., L. Eilers 1979 | 5161 |
| Apiaceae | Heracleum lanatum Michx. | . | Dickinson. | S. of Miller's Bay, W. Lake Okoboji | . | Low woods | Shimek, Bohumil | . | 8/19/1909 | 1909 | . | 954 |
| Apiaceae | Heracleum lanatum Michx. | . | Dickinson. | S. of Miller's Bay, W. Okoboji | . | Low woods | Shimek, Bohumil | . | 8/19/1909 | 1909 | . | 956 |
| Apiaceae | Heracleum lanatum Michx. | . | Dickinson. | Sunset Beach. Sec. 30, SE-SW. | T99N_R36W_Sec30 | Tilia - ash forest. Co white | Grant, Martin L. | 12156 | 6/22/1954 | 1954 | Original i.d.: Heracleum maximum Bartr. Annot.: H. lanatum Michx., L. Eilers 1979 | 1977 |
| Apiaceae | Osmorhiza claytonii (Michx.) Clarke | . | Dickinson. | 2 miles west of Milford. Along Little Sioux River. | . | Upland woods | Severe, Doris | 8 | 7/24/1957 | 1957 | Original i.d.: Osmorhiza longistylis (Torr.) DC. Annot.: O. claytonii (Michx.) C.B. Clarke, L. Eilers 1966 | 4284 |
| Apiaceae | Osmorhiza claytonii (Michx.) Clarke | . | Dickinson. | East shore of West Okoboji Lake | T99N_R36W_Sec18 | Dense woods, Maple woods | Naffziger, Joyce | 59 | . | . | Robert F. Thorne, 1961. [Date is missing but her other specimens were dated 08-04-1961 or 08-11-1961] | 5347 |
| Apiaceae | Osmorhiza claytonii (Michx.) Clarke | . | Dickinson. | Gilley's Beach | . | Woods | Shimek, Bohumil | . | 6/24/1912 | 1912 | . | 957 |
| Apiaceae | Osmorhiza claytonii (Michx.) Clarke | . | Johnson. | . | . | . | Shimek, Bohumil | . | 06/06/1891 | 1891 | !M. Murley - 1945 | 4752 |
| Apiaceae | Osmorhiza longistylis (Torr.) DC. | . | Dickinson. | Gilley's Beach, Arnold's Park | . | Woods | Shimek, Bohumil | . | 6/24/1912 | 1912 | . | 959 |
| Apiaceae | Osmorhiza longistylis (Torr.) DC. | . | Dickinson. | Iowa Lakeside Laboratory | . | Open area | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/17/1973 | 1973 | . | 4962 |
| Apiaceae | Osmorhiza longistylis (Torr.) DC. | . | Dickinson. | Woods W. of Elmcrest | . | . | Conard, H. S. | . | 6/25/1923 | 1923 | Original i.d.: Osmorhiza claytonii (Michx.) Clarke. Annot.: O. longistylis (Torr.) DC., Robert F. Thorne, 1955; O.l. ! [anon.] | 958 |
| Apiaceae | Oxypolis rigidior (L.) C.&R. | . | Cerro Gordo. | Mason City | . | Low ground, SW side of Buffalo Slough. | Shimek, Bohumil | . | 9/15/1928 | 1928 | Original i.d.: Sium cicutifolium Schrank. Annot.: Oxypolis rigidion (L.) C.&R., Robert F. Thorne, 1955. County not listed by collector, but location is distinct. | 2277 |
| Apiaceae | Pastinaca sativa L. | . | Dickinson. | Iowa Lakeside Laboratory | . | N 40 | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/24/1973 | 1973 | . | 4961 |
| Apiaceae | Pastinaca sativa L. | . | Dickinson. | Arnold's Park | . | Roadside | Shimek, Bohumil | . | 8/9/1910 | 1910 | . | 960 |
| Apiaceae | Pastinaca sativa L. | . | Dickinson. | Pleasant Lake | . | On roadside | Conard, H. S. | . | 7/14/1923 | 1923 | . | 961 |
| Apiaceae | Pastinaca sativa L. | . | Dickinson. | Sec. 28, NE1/4. | T100N_R38W_Sec28 | Roadside ditch | Byerly, Dale M. | . | 8/10/1957 | 1957 | [Range number off the edge of the label assumed to be R38N which matches 2nd specimen by this collector.] | 4285 |
| Apiaceae | Sanicula canadensis L. | . | Dickinson. | Spirit Lake woods | . | . | Anderson, W. A. | . | 6/26/1941 | 1941 | . | 964 |
| Apiaceae | Sanicula canadensis L. | . | Dickinson. | Amundtson Woods, 3 mi. SW. of Milford. Sec. 26, SW-NW . | T98N_R37W_Sec26 | Bur oak - creek bank | Grant, Martin L. | 14405 | 8/8/1960 | 1960 | . | 4319 |
| Apiaceae | Sanicula canadensis L. | . | Dickinson. | East shore of West Okoboji Lake | T99N_R37W_Sec12 | Open woods, Oak woods. | Naffziger, Joyce | 27 | 8/4/1961 | 1961 | . | 5343 |
| Apiaceae | Sanicula canadensis L. | . | Dickinson. | Gull Point State Park | . | . | Severe, Doris | 61 | 8/9/1957 | 1957 | . | 4286 |
| Apiaceae | Sanicula canadensis L. | . | Dickinson. | Iowa Lakeside Laboratory | . | Wood understory in Acer negundo - Quercus macrocarpa woodland | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/17/1973 | 1973 | . | 4960 |
| Apiaceae | Sanicula canadensis L. | . | Dickinson. | North end of Spirit Lake | . | Woods | Anderson, W. A. | . | 6/26/1944 | 1944 | . | 5218 |
| Apiaceae | Sanicula canadensis L. | . | Dickinson. | Okoboji Club | . | Forest edge | Grant, Martin L. | 11219 | 7/28/1949 | 1949 | . | 963 |
| Apiaceae | Sanicula canadensis L. | . | Emmet. | High lake | . | Long style form. Long style form | Wolden, B. O. | . | 8/6/1923 | 1923 | Annot.: S. canadensis L., Martin L. Grant,1948. Sanicula gregaria Bicknell. APK. OK. BS, with arrow pointing to Sanicula gregaria Bicknell. | 962 |
| Apiaceae | Sanicula gregaria Bickn. | . | Dickinson. | 2 miles west of Milford. | . | Upland woods, along Little Sioux River. | Severe, Doris | 9 | 7/24/1957 | 1957 | . | 4287 |
| Apiaceae | Sanicula gregaria Bickn. | . | Dickinson. | East side of West Okoboji Lake | . | Woods north of The Inn | Shimek, Bohumil | . | 7/9/1918 | 1918 | . | 1782 |
| Apiaceae | Sanicula gregaria Bickn. | . | Dickinson. | Gull Point | . | Bur oak woods | Grant, Martin L. | 11173 | 6/30/1949 | 1949 | . | 965 |
| Apiaceae | Sanicula gregaria Bickn. | . | Dickinson. | Iowa Lakeside Laboratory | . | Opening in Acer negundo - Quercus macrocarpa woodland | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/17/1973 | 1973 | . | 4959 |
| Apiaceae | Sanicula gregaria Bickn. | . | Dickinson. | Near Beck's spring | . | Woods | Shimek, Bohumil | . | 8/27/1911 | 1911 | Original i.d.: Sanicula marilandica L. Annot.: This specimen is S. gregaria. The S. marilandica (much less common) is more robust and has a much larger fruit. B. Shimek; Sanicula gregaria Bicknell, AK! | 966 |
| Apiaceae | Sanicula gregaria Bickn. | . | Dickinson. | W. Okoboji Lake, woods at Elm Creek | . | . | Shimek, Bohumil | . | 7/26/1916 | 1916 | !M. Murley - 1945 | 5267 |
| Apiaceae | Sanicula gregaria Bickn. | . | Iowa. | N. of Homestead | . | Upland woods | Shimek, Bohumil | . | 7/4/1903 | 1903 | County not listed by collector, but location is distinct. | 2276 |
| Apiaceae | Sanicula marilandica L. | . | Dickinson. | Gull Point State Park | . | . | Severe, Doris | 63 | 8/9/1957 | 1957 | . | 4288 |
| Apiaceae | Sanicula marilandica L. | . | Dickinson. | W. of Elmcrest | . | Woods | Conard, H. S. | . | 6/25/1923 | 1923 | Annot.: Martin L. Grant, S. marilandica L.(Note indurated Ca tips of Male fls), 1949. S. gregaria BS | 967 |
| Apiaceae | Sanicula marilandica L. | . | Winneshiek. | . | . | . | Fitzpatrick, T.J. | . | 06/14/1895 | 1895 | ! M. Murley - 1945 | 4754 |
| Apiaceae | Sium suave Walt. | . | Dickinson. | . | T100N_R35W_Sec29 | . | Nelsen, J. | 309 | 8/1/1967 | 1967 | . | 5204 |
| Apiaceae | Sium suave Walt. | . | Dickinson. | Crossroads Pond | T99N_R37W_Sec35 | 1' water. 2' stem removed | Luchen, Mary Alyce | 7 | 7/28/1961 | 1961 | . | 5342 |
| Apiaceae | Sium suave Walt. | . | Dickinson. | Gar Lake | . | . | Downing, W.L. | 10 | 7/29/1949 | 1949 | Original i.d.: Sium cicutifolium Schrank. Annot.: = S. suave [anon.] | 969 |
| Apiaceae | Sium suave Walt. | . | Dickinson. | Gull Pt., Lake Okoboji | . | Swamp | Fox, William B. | . | 7/28/1941 | 1941 | ! PHM '52 [?] | 5219 |
| Apiaceae | Sium suave Walt. | . | Dickinson. | Iowa Lakeside Laboratory | . | N40, swampy area, fls white | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/24/1973 | 1973 | . | 5050 |
| Apiaceae | Sium suave Walt. | . | Dickinson. | Kettlehole | . | Swamp, west of lookout | Shimek, Bohumil | . | 7/31/1912 | 1912 | Original i.d.: Sium cicutifolium Schrank. Annot.: = S. suave [anon.] | 970 |
| Apiaceae | Sium suave Walt. | . | Dickinson. | Manhattan Slough | . | 2 feet of water | Hoffman, Larry | . | 8/7/1957 | 1957 | Original i.d.: Cicuta maculata L. Annot.: Sium suave, LJE 2 VIII 74. | 4279 |
| Apiaceae | Sium suave Walt. | . | Dickinson. | N. of Miller's Bay, W. Lake Okoboji | . | Bog | Shimek, Bohumil | . | 8/2/1910 | 1910 | Original i.d.: Sium cicutifolium Schrank. Annot.: = S. suave [anon.] | 968 |
| Apiaceae | Sium suave Walt. | . | Dickinson. | Plants of outlet of Lower Gar Lake. | T98N_R36W_Sec5 | Shallow water. | Shannon, Jerry A. | 18 | 7/29/1961 | 1961 | . | 5616 |
| Apiaceae | Sium suave Walt. | . | Dickinson. | S. end of Garlock Slough | T99N_R37W_Sec35 | Moist soil along shoreline | Begres, F.M. | . | 7/19/1968 | 1968 | . | 5288 |
| Apiaceae | Sium suave Walt. | . | Dickinson. | Shedd's Pond | T99N_R36W_Sec35 | . | Boetel, Lynne | 19928 | 6/11/1961 | 1961 | . | 5340 |
| Apiaceae | Sium suave Walt. | . | Dickinson. | Tricorner Pond. SW1/4, sec. 35. | T99N_R37W_Sec35 | A florula of a drying pool in a former cornfield at the north corner of the pond | Anderson, B., J. Drum, A. Havick, & P. Sandridge | . | 8/3/1961 | 1961 | . | 5341 |
| Apiaceae | Taenidia integerrima (L.) Drude | . | Dickinson. | 2 miles west of Milford | . | Upland woods, along the Little Sioux River | Severe, Doris | 1 | 7/18/1957 | 1957 | . | 4289 |
| Apiaceae | Taenidia integerrima (L.) Drude | . | Dickinson. | Iowa Lakeside Laboratory | . | Wooded understory on water front. | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/19/1973 | 1973 | . | 4957 |
| Apiaceae | Taenidia integerrima (L.) Drude | . | Dickinson. | Lakeside Lab., south edge of campus | . | Oak woods | Grant, Martin L. | 11220 | 7/28/1949 | 1949 | . | 971 |
| Apiaceae | Taenidia integerrima (L.) Drude | . | Dickinson. | So. of Pillsbury's Pt. | . | Wooded bank (open). | Shimek, Bohumil | . | 6/24/1912 | 1912 | . | 972 |
| Apiaceae | Thaspium aureum Nutt. | . | Dubuque. | . | . | . | Bartsch, Paul | . | 7/16/1895 | 1895 | Pastinaca sativa L., Det. M. Murley, 1945. [aureum lined out with ?, anon.] | 4753 |
| Apiaceae | Thaspium barbinode (Michx.) Nutt. | . | Dickinson. | 2 miles west of Milford | . | Upland woods, along Little Sioux River. | Severe, Doris | 13 | 7/24/1957 | 1957 | . | 4290 |
| Apiaceae | Thaspium barbinode (Michx.) Nutt. | . | Dickinson. | Center Lake. Sec. 6, SW-SE. | T99N_R36W_Sec6 | Rocky lake-shore woods. co canary yellow. co canary yellow | Grant, Martin L. | 11165 | 6/28/1949 | 1949 | . | 974 |
| Apiaceae | Thaspium barbinode (Michx.) Nutt. | . | Dickinson. | East shore of West Okoboji Lake | T99N_R37W_Sec12 | Open woods, Oak woods. | Naffziger, Joyce | 5 | 8/4/1961 | 1961 | . | 5346 |
| Apiaceae | Thaspium barbinode (Michx.) Nutt. | . | Dickinson. | Elmcrest | . | . | Conard, H. S. | . | 7/1/1923 | 1923 | Original i.d.: Thaspium aureum Nutt. Annot.: Thaspium barbinode (Michx.) Nutt., Martin L. Grant, 1949. | 975 |
| Apiaceae | Thaspium barbinode (Michx.) Nutt. | . | Dickinson. | Iowa Lakeside Laboratory | . | Understory in Acer negundo - Quercus macrocarpa wood. | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/19/1973 | 1973 | . | 4958 |
| Apiaceae | Thaspium barbinode (Michx.) Nutt. | . | Dickinson. | Jones Beach, Lake W. Okoboji | . | Sandy shore. Co yellow | Grant, Martin L. | 13904 | 7/1/1959 | 1959 | . | 3858 |
| Apiaceae | Thaspium barbinode (Michx.) Nutt. | . | Dickinson. | Miller's Bay, Beck's spring | . | Woods | Shimek, Bohumil | . | 8/27/1911 | 1911 | Original i.d.: Thaspium aureum Nutt. Annot.: Thaspium barbinode (Michx.) Nutt., Martin L. Grant, 1949. | 976 |
| Apiaceae | Thaspium barbinode (Michx.) Nutt. | . | Dickinson. | Near Beck's spring, W. Okoboji Lake | . | Woods | Shimek, Bohumil | . | 6/22/1912 | 1912 | Original i.d.: Thaspium aureum Nutt. Annot.: Thaspium barbinode (Michx.) Nutt., Martin L. Grant, 1949. | 973 |
| Apiaceae | Thaspium barbinode (Michx.) Nutt. | . | Johnson. | . | . | . | Linder, Mary | . | . | . | Robert F. Thorne, T. barbinode (Michx.) Nutt., 1955. [barbinode (Michx.) Nutt. had been lined out on the original label and 'aureum' written in] | 2431 |
| Apiaceae | Zizia aptera (Gray) Fern. | . | Worth. | Along Highway #9, west of east line of Worth County | . | Upland prairie along railroad | Shimek, Bohumil | . | 6/9/1932 | 1932 | Original i.d.: Zizia cordata (Walt.) DC. Annot.: Z. aptera [anon.] | 2278 |
| Apiaceae | Zizia aurea (L.) Koch | . | Dickinson. | 2 miles west of Milford | . | Upland woods, along Little Sioux River | Severe, Doris | 16 | 7/24/1957 | 1957 | . | 4292 |
| Apiaceae | Zizia aurea (L.) Koch | . | Dickinson. | Bank of Little Sioux River | . | . | Anderson, W. A. & Harold Harrington | . | 7/29/1932 | 1932 | . | 979 |
| Apiaceae | Zizia aurea (L.) Koch | . | Dickinson. | E. of W. Lake Okoboji | . | Prairie | Cavanagh, Lucy M . | . | 5/30/1910 | 1910 | . | 978 |
| Apiaceae | Zizia aurea (L.) Koch | . | Dickinson. | Floete Prairie | . | Low wet prairie. | Zylstra, Connie | . | 7/25/1958 | 1958 | . | 4291 |
| Apiaceae | Zizia aurea (L.) Koch | . | Dickinson. | Iowa Lakeside Laboratory | . | N 40, low area. Fls yellow | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/23/1973 | 1973 | Pastinaca sativa L. [anon.] | 4956 |
| Apiaceae | Zizia aurea (L.) Koch | . | Dickinson. | Montgomery. Sec. 28, NW-NW. | T100N_R36W_Sec28 | Prairie | Grant, Martin L. | 8735 | 7/1/1948 | 1948 | . | 977 |
| Apiaceae | Zizia aurea (L.) Koch | . | Dickinson. | North of C.R.I.&P. Ry, near West Okoboji Station | . | Prairie | Shimek, Bohumil | . | 6/18/1918 | 1918 | . | 2023 |
| Apiaceae | Zizia aurea (L.) Koch | . | Dickinson. | Schoolyard, 1/4 mile north and 2 miles west of Lakeside Lab. | . | Disturbed mid-prairie. | Chilton, Mike | . | 8/9/1958 | 1958 | . | 4293 |
| Apiaceae | Zizia aurea (L.) Koch | . | Dickinson. | W. of Elmcrest | . | Woods | Conard, H. S. | . | 6/25/1923 | 1923 | Original i.d.: Zizia cordata (Walt.) DC. Annot.: Z. aurea, B.S.; Z. au ! [anon.] | 981 |
| Apocynaceae | Apocynum X medium Greene | . | Emmet. | Fort Defiance State Park. Estherville twnshp. Sec. 16. | . | Open woods along ridge | Thorne, Robert F. | 14256 | 6/29/1954 | 1954 | (= A. androsaemifolium L. x A. cannabinum L.) | 4509 |
| Apocynaceae | Apocynum X medium Greene | var. leuconeuron (Greene) Woodson | Emmet. | Fort Defiance State Park | . | Oak woods. Co white, 2 1/2 x ca. Co white, 2 1/2 x ca | Grant, Martin L. | 12235 | 6/29/1954 | 1954 | (= A. androsaemifolium L. x A. cannabinum L.) | 1981 |
| Apocynaceae | Apocynum androsaemifolium L. | . | Cerro Gordo. | . | . | Hackberry grove | Shimek, Bohumil | . | 07/02/1896 | 1896 | ! M. Murley, June 1945 | 2602 |
| Apocynaceae | Apocynum androsaemifolium L. | . | Cerro Gordo. | W. of Mason City | . | Along road near big slough | Shimek, Bohumil | . | 6/25/1920 | 1920 | County not listed by collector, but Shimek's other collections for this date were from this county. | 2294 |
| Apocynaceae | Apocynum androsaemifolium L. | . | Dickinson. | Arnold's Park | . | Open woods | Shimek, Bohumil | . | 8/8/1911 | 1911 | . | 1002 |
| Apocynaceae | Apocynum cannabinum L. | . | Dickinson. | Elmcrest | . | . | Conard, H. S. | . | 7/5/1923 | 1923 | . | 1004 |
| Apocynaceae | Apocynum cannabinum L. | . | Dickinson. | Lakeside Lab. grounds, W. Okoboji Lake | . | Upland prairie on bank. | Shimek, Bohumil | . | 8/5/1911 | 1911 | Annot.: = Apocynum cannabinum L. var. glaberrimum A. DC. Det. M.Murley June 1945 | 2603 |
| Apocynaceae | Apocynum cannabinum L. | . | Dickinson. | Openings S. of Miller's Bay, W. Lake Okoboji | . | . | Shimek, Bohumil | . | 8/19/1909 | 1909 | . | 1005 |
| Apocynaceae | Apocynum cannabinum L. | . | Emmet. | Anderson Prairie State Preserve | . | Wet prairie between hills. | Nixon, Jennifer, Heath Reinke, Michaeleen Gerken | . | 7/6/2001 | 2001 | . | 5654 |
| Apocynaceae | Apocynum cannabinum L. | . | Harrison. | Blair bridge | . | Dune area | Shimek, Bohumil | . | 6/21/1930 | 1930 | . | 2295 |
| Apocynaceae | Apocynum cannabinum L. | var. cannabinum | Dickinson. | S. of Milford. Sec. 13, NW1/4. | T98N_R37W_Sec13 | Prairie along RR. Co white. Co white | Grant, Martin L. | 12453 | 8/10/1954 | 1954 | . | 2527 |
| Apocynaceae | Apocynum cannabinum L. | var. hypericifolium (Ait.) Gray | Dickinson. | Lakeville twnshp. Sec. 33, E 1/2. | . | . | Conard, H. S. | . | 7/10/1923 | 1923 | Annot.: = A. sibiricum Jacq. [anon.]). var. c.! [anon.] | 1008 |
| Apocynaceae | Apocynum cannabinum L. | var. hypericifolium (Ait.) Gray | Dickinson. | Rush Lake | . | . | Conard, H. S. | . | 7/18/1923 | 1923 | Annot.: = A. sibiricum Jacq. [anon.]. P2419var. c. ! [anon.]. P2419 | 1009 |
| Apocynaceae | Apocynum cannabinum L. | var. hypericifolium (Ait.) Gray | Dickinson. | W. Okoboji | . | Prairie | Shimek, Bohumil | . | 8/5/1910 | 1910 | Annot.: = A. sibiricum Jacq. [anon.]. var. c. ! [anon.] | 1006 |
| Apocynaceae | Apocynum cannabinum L. | var. hypericifolium (Ait.) Gray | Dickinson. | West Okoboji | . | Low prairie, fruit. [I.L.L. #1007 also has a second label that gives a date of 07-03-1912 [Collected at low prairie S. of mail box, Miller's Bay, flowers. Also collected by B. Shimek. Note the different years of these combined collections.] | Shimek, Bohumil | . | 8/28/1911 | 1911 | Annot.: = A. sibiricum Jacq. var. c. [anon.]. [I.L.L. #1007 also has a second label that gives a date of 07-03-1912 [Collected at low prairie S. of mail box, Miller's Bay, flowers. Also collected by B. Shimek. Note the different years of these combined collections.] | 1007 |
| Apocynaceae | Apocynum sibiricum Jacq. | . | Dickinson. | Cayler Prairie. Lakeville twnshp. Sec. 17, NW 1/4. | . | . | Thorne, Robert F. | 17762 | 6/21/1956 | 1956 | . | 4424 |
| Apocynaceae | Apocynum sibiricum Jacq. | . | Dickinson. | Floete Prairie | . | Low west prairie. 1 foot of stem removed. 1 foot of stem removed | Zylstra, Connie | . | 8/9/1958 | 1958 | . | 2605 |
| Apocynaceae | Apocynum sibiricum Jacq. | . | Dickinson. | Iowa Lakeside Laboratory | . | Open area, weedy grasses and forbs. Fls white, clones. Fls white, clones | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/12/1973 | 1973 | . | 5034 |
| Apocynaceae | Apocynum sibiricum Jacq. | . | Dickinson. | Wahpeton City dump, 1/4 mile north of Lakeside Lab. | . | High disturbed prairie | Chilton, Mike | . | 8/9/1958 | 1958 | Annot.: = A. cannabinum L. [anon.]. A.c.! [anon.] | 2604 |
| Apocynaceae | Apocynum sibiricum Jacq. | var. cordigerum (Greene) Fern. | Dickinson. | R.R. tracks N. of Milford. Sec. 6, W. | T99N_R36W_Sec6 | Prairie pond. 5', co white. | Grant, Martin L. | 12140 | 6/21/1954 | 1954 | . | 1982 |
| Apocynaceae | Apocynum sibiricum Jacq. | var. sibiricum | Dickinson. | Cayler Prairie. Sec. 17, NW1/4. | T99N_R37W_Sec17 | Near west boundary road | Grant, Martin L. | 13968 | 7/13/1959 | 1959 | . | 3934 |
| Apocynaceae | Asclepias amplexicaulis Sm. | . | Muscatine. | 1st mile N. of Summit | . | Weeds in R.R. roadbed | Shimek, Bohumil | . | 6/21/1924 | 1924 | See Asclepiaceae in Eilers & Roosa [1994]. | 2297 |
| Apocynaceae | Asclepias hirtella (Pennell) Woodson | . | Howard. | Hayden Prairie. Chester twnshp. Sec. 33, NE 1/4. | . | . | Thorne, Robert F. | 17713 | 6/17/1956 | 1956 | See Asclepiaceae in Eilers & Roosa [1994]. | 4584 |
| Apocynaceae | Asclepias incarnata L. | . | Dickinson. | Jemmerson Slough | T100N_R36W_Sec31 | Wet ground. 3 feet tall | Hoffman, Larry | . | 8/4/1957 | 1957 | See Asclepiaceae in Eilers & Roosa [1994]. | 2612 |
| Apocynaceae | Asclepias incarnata L. | . | Dickinson. | N. Slough, W. Okoboji. Sec. 36, SW-SW. | T100N_R37W_Sec36 | Pond margin. Corolla rose-purple, 4' tall | Grant, Martin L. | 8875 | 8/5/1948 | 1948 | See Asclepiaceae in Eilers & Roosa [1994]. | 1018 |
| Apocynaceae | Asclepias incarnata L. | . | Clay. | Kirchner Prairie | . | Prairie east of abandoned road and west of wetland, just north of fence line. Plants scattered. Flowers still opening, most still closed. | Bless, Candy and Aletia Van Brocklin | 12 | 7/12/2002 | 2002 | See Asclepiadaceae in Eilers & Roosa [1994]. | 5670 |
| Apocynaceae | Asclepias incarnata L. | . | Clay. | Kirchner Prairie | . | Wet prairie bordering cattails. | Schissel, Ryan , Randy Miller, David Roth | 11 | 7/12/2002 | 2002 | See Asclepiadaceae in Eilers & Roosa [1994]. | 5667 |
| Apocynaceae | Asclepias incarnata L. | . | Dickinson. | . | T100N_R35W_Sec29 | . | Nelsen, J. | 316 | 8/6/1967 | 1967 | See Asclepiaceae in Eilers & Roosa [1994]. | 5171 |
| Apocynaceae | Asclepias incarnata L. | . | Dickinson. | . | T99N_R37W_Sec35 | Edge of marsh | Shook, A. D. & E. O. Beal | 27 | 7/26/1950 | 1950 | See Asclepiaceae in Eilers & Roosa [1994]. | 1020 |
| Apocynaceae | Asclepias incarnata L. | . | Dickinson. | Cayler Prairie. Lakeville twnshp. Sec. 17, W 1/2. | . | Prairie marshes, ponds and swales, common. | Thorne, Robert F. | 16159 | 7/9/1955 | 1955 | See Asclepiaceae in Eilers & Roosa [1994]. | 4425 |
| Apocynaceae | Asclepias incarnata L. | . | Dickinson. | Floete Prairie, 1/4 mile south of Lakeside Lab. | . | Low Prairie | Chilton, Mike | . | 7/30/1958 | 1958 | See Asclepiaceae in Eilers & Roosa [1994]. | 2611 |
| Apocynaceae | Asclepias incarnata L. | . | Dickinson. | Floete Prairie | . | Marshy prairie. 3 feet of stem removed. | Zylstra, Connie | . | 7/25/1958 | 1958 | See Asclepiaceae in Eilers & Roosa [1994]. | 2613 |
| Apocynaceae | Asclepias incarnata L. | . | Dickinson. | Iowa Lakeside Laboratory | . | On edge of Bay. Fls pink-rose-purple. Fls pink-rose-purple | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/16/1973 | 1973 | See Asclepiaceae in Eilers & Roosa [1994]. | 5036 |
| Apocynaceae | Asclepias incarnata L. | . | Dickinson. | Marble Lake. Spirit Lake twnshp. | T100N_R36W_Sec19 | Moist shore. 8 in. removed | Roosa, Dean M. | 19 | 7/30/1961 | 1961 | See Asclepiaceae in Eilers & Roosa [1994]. | 5310 |
| Apocynaceae | Asclepias incarnata L. | . | Dickinson. | N. Slough, W. Okoboji. Sec. 36, SW-SW. | T100N_R37W_Sec36 | Pond margin. White flowered form. co, hoods, & horns white; Ca & column-base greenish. 3 1/2' tall. | Grant, Martin L. | 8876 | 8/5/1948 | 1948 | See Asclepiaceae in Eilers & Roosa [1994]. | 1017 |
| Apocynaceae | Asclepias incarnata L. | . | Dickinson. | North of old mail box. Sec. 23, SW 1/4. | T99N_R37W_Sec23 | Swamp | Shimek, Bohumil | . | 7/15/1916 | 1916 | See Asclepiaceae in Eilers & Roosa [1994]. | 2024 |
| Apocynaceae | Asclepias incarnata L. | . | Dickinson. | Plants of outlet of Lower Gar Lake. | T98N_R36W_Sec5 | Margin. | Shannon, Jerry A. | 20 | 7/29/1961 | 1961 | See Asclepiadaceae in Eilers & Roosa [1994]. | 5620 |
| Apocynaceae | Asclepias incarnata L. | . | Dickinson. | S. end on Garlock Slough | T99N_R37W_Sec35 | Moist soil along shore | Begres, F.M. | . | 7/15/1968 | 1968 | See Asclepiaceae in Eilers & Roosa [1994]. | 5271 |
| Apocynaceae | Asclepias incarnata L. | . | Dickinson. | Slough back of Elmcrest | . | . | Conard, H. S. | . | 7/9/1923 | 1923 | See Asclepiaceae in Eilers & Roosa [1994]. | 1019 |
| Apocynaceae | Asclepias lanuginosa Nutt. | . | Dickinson. | Cayler Prairie. Lakeville twnshp. Sec. 17, NW 1/4. | . | Dry prairie, rare. | Thorne, Robert F. | 16108 | 6/26/1955 | 1955 | Original i.d.: Asclepias Nuttalliana Torr. Annot.: Iowa Nat. Areas Inventory Jeanne W. Bates 1983-08-05; = A. lanuginosa [anon.] | 4426 |
| Apocynaceae | Asclepias lanuginosa Nutt. | . | Dickinson. | Cayler Prairie. Sec. 17, NW1/4. | T99N_R37W_Sec17 | High prairie. Co greenish. | Grant, Martin L. | 14236 | 6/20/1960 | 1960 | (= A. Nutttalliana Torr.) Iowa Nat. Areas Inventory Jeanne W. Bates 1983-08-05. See Asclepiaceae in Eilers & Roosa [1994]. | 4005 |
| Apocynaceae | Asclepias ovalifolia Dcne. | . | Clay. | Dewey's Pasture | T97N_R35W_Sec25 | Prairie | Grant, Martin L. | 8923 | 8/10/1948 | 1948 | Iowa Nat. Areas Inventory Jeanne W. Bates 1983-08-05. See Asclepiaceae in Eilers & Roosa [1994]. | 1021 |
| Apocynaceae | Asclepias ovalifolia Dcne. | . | Dickinson. | Cayler Prairie. Lakeville twnshp. Sec. 17, NW 1/4. | . | One plant in E. 40 acres. | Thorne, Robert F. | 17612 | 6/11/1956 | 1956 | Iowa Nat. Areas Inventory Jeanne W. Bates 1983-08-05. See Asclepiaceae in Eilers & Roosa [1994]. | 4427 |
| Apocynaceae | Asclepias ovalifolia Dcne. | . | Dickinson. | Montgomery. Sec. 28, NW-NW. | T100N_R37W_Sec28 | Low prairie. One 7 dm. high,[?] with 13 pr. leaves. Sterile | Grant, Martin L. | 11656 | 8/18/1952 | 1952 | Iowa Nat. Areas Inventory Jeanne W. Bates 1983-08-05. See Asclepiaceae in Eilers & Roosa [1994]. | 1490 |
| Apocynaceae | Asclepias ovalifolia Dcne. | . | Dickinson. | Prairie near Kettleson's slough. | . | . | Anderson, W. A. | . | 6/30/1935 | 1935 | Iowa Nat. Areas Inventory Jeanne W. Bates 1983-08-05. See Asclepiaceae in Eilers & Roosa [1994]. | 1022 |
| Apocynaceae | Asclepias ovalifolia Dcne. | . | Howard. | Hayden Prairie. Chester twnshp. Sec. 33, NE 1/4. | . | . | Thorne, Robert F. | 17702 | 6/17/1956 | 1956 | Iowa Nat. Areas Inventory Jeanne W. Bates 1983-08-05. See Asclepiaceae in Eilers & Roosa [1994]. | 4586 |
| Apocynaceae | Asclepias ovalifolia Dcne. | . | Howard. | Hayden Prairie | . | . | Spence, W. L. | . | 7/11/1958 | 1958 | Iowa Nat. Areas Inventory Jeanne W. Bates 1983-08-05. See Asclepiaceae in Eilers & Roosa [1994]. | 2614 |
| Apocynaceae | Asclepias ovalifolia Dcne | . | Howard. | Hayden Prairie. Chester twnshp. Sec. 33, NE 1/4. | . | Moist swale | Thorne, Robert F. & Bill Spence | 19645 | 7/11/1958 | 1958 | Iowa Nat. Areas Inventory Jeanne W. Bates 1983-08-05. See Asclepiaceae in Eilers & Roosa [1994]. | 4626 |
| Apocynaceae | Asclepias sullivantii Engelm. | . | Dickinson. | Excelsior Twp. Sec. 15, SW-SW. | . | Roadside ditch. Co rose-purple, hoods pink | Grant, Martin L. | 12353 | 7/21/1954 | 1954 | Iowa Nat. Areas Inventory Jeanne W. Bates 1983-08-05. See Asclepiaceae in Eilers & Roosa [1994]. | 1983 |
| Apocynaceae | Asclepias sullivantii Engelm. | . | Dickinson. | Montgomery. Sec. 28, NW-NW. | T100N_R37W_Sec28 | Low prairie. Co purplish | Grant, Martin L. | 11657 | 8/18/1952 | 1952 | Iowa Nat. Areas Inventory Jeanne W. Bates 1983-08-05. See Asclepiaceae in Eilers & Roosa [1994]. | 1491 |
| Apocynaceae | Asclepias sullivantii Engelm. | . | Dickinson. | NW of Miller's Bay | . | Prairie | Shimek, Bohumil | . | 8/25/1911 | 1911 | Iowa Nat. Areas Inventory Jeanne W. Bates 1983-08-05 | 1023 |
| Apocynaceae | Asclepias sullivantii Engelm. | . | Emmet. | . | . | . | Cratty, R.I. | . | 07/01/1891 | 1891 | Iowa Nat. Areas Inventory Jeanne W. Bates 1983-08-05. See Asclepiaceae in Eilers & Roosa [1994]. | 2618 |
| Apocynaceae | Asclepias sullivantii Engelm. | . | Iowa. | S. of Amana | . | Alluvial prairie | Shimek, Bohumil | . | 7/1/1911 | 1911 | Iowa Nat. Areas Inventory Jeanne W. Bates 1983-08-05. See Asclepiaceae in Eilers & Roosa [1994]. | 2298 |
| Apocynaceae | Asclepias syriaca L. X A. speciosa Torr. | . | Clay. | Dewey's Pasture | T97N_R35W_Sec25 | Slough | Grant, Martin L. | 8925 | 8/10/1948 | 1948 | See Asclepiaceae in Eilers & Roosa [1994]. | 1025 |
| Apocynaceae | Asclepias syriaca L. | . | . | East of Iowa City | . | Prairie along R.R. | Shimek, Bohumil | . | 7/19/1910 | 1910 | See Asclepiaceae in Eilers & Roosa [1994]. | 2299 |
| Apocynaceae | Asclepias syriaca L. | f. leucantha Dore | Dickinson. | One mile N. of Milford | . | Roadside. Co pale greenish; hoods, horns, and stigmas snowy white | Grant, Martin L. | 14996 | 8/3/1967 | 1967 | See Asclepiaceae in Eilers & Roosa [1994]. | 4775 |
| Apocynaceae | Asclepias syriaca L. | . | Dickinson. | Beck's Canal, near Nuphar, W. Lake Okoboji | . | Wet soil near canal | Zylstra, Connie | . | 7/14/1958 | 1958 | See Asclepiaceae in Eilers & Roosa [1994]. | 2616 |
| Apocynaceae | Asclepias syriaca L. | . | Dickinson. | Floete Prairie | . | Marshy prairie. 1 foot of stem removed. | Zylstra, Connie | . | 7/25/1958 | 1958 | See Asclepiaceae in Eilers & Roosa [1994]. | 2617 |
| Apocynaceae | Asclepias syriaca L. | . | Dickinson. | Iowa Lakeside Laboratory | . | Open area, weedy grasses and forbs. Fls red-violet | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/12/1973 | 1973 | See Asclepiaceae in Eilers & Roosa [1994]. | 5027 |
| Apocynaceae | Asclepias syriaca L. | . | Dickinson. | Lakeside Lab., found along road between cabins and laboratories. | . | Roadside (dry). 1' stem removed | Chilton, Mike | . | 7/25/1958 | 1958 | See Asclepiaceae in Eilers & Roosa [1994]. | 2615 |
| Apocynaceae | Asclepias syriaca L. | . | Dickinson. | W. of camp Holiday | . | . | Conard, H. S. | . | 7/9/1923 | 1923 | See Asclepiaceae in Eilers & Roosa [1994]. | 1024 |
| Apocynaceae | Asclepias tuberosa L. | . | Dickinson. | Manhattan Lake. Sec. 14, NW-NE. | T99N_R37W_Sec14 | Prairie. Co orange - vermillion, drying to orange-yellow [added to label 'Frt. July 22, 1949'] | Grant, Martin L. | 8714 | 6/23/1948 | 1948 | See Asclepiaceae in Eilers & Roosa [1994]. | 1026 |
| Apocynaceae | Asclepias tuberosa L. | . | Dickinson. | SW of Miller's Bay, W. Lake Okoboji | . | Prairie | Shimek, Bohumil | . | 8/11/1910 | 1910 | See Asclepiaceae in Eilers & Roosa [1994]. | 1027 |
| Apocynaceae | Asclepias tuberosa L. | . | Clay. | Kirchner Prairie | . | Dry open prairie. Between old road no longer used and wetland area. Common but widely scattered. | Insko, Mike & Todd Pietig | 2 | 7/12/2002 | 2002 | See Asclepiadaceae in Eilers & Roosa [1994]. | 5680 |
| Apocynaceae | Asclepias tuberosa L. | . | Dickinson. | Floete Prairie. Sec. 26, E-NW. | T99N_R37W_Sec26 | Prairie | Grant, Martin L. | 12442 | 8/6/1954 | 1954 | See Asclepiaceae in Eilers & Roosa [1994]. | 2528 |
| Apocynaceae | Asclepias tuberosa L. | . | Dickinson. | Floete Prairie. Sec. 36, NW 1/4. | T99N_R37W_Sec36 | Mesic prairie | Knudson, Steve | . | 7/3/1961 | 1961 | See Asclepiaceae in Eilers & Roosa [1994]. | 5309 |
| Apocynaceae | Asclepias tuberosa L. | . | Dickinson. | Floete prairie | . | Dry prairie hillside | Zylstra, Connie | . | 7/24/1958 | 1958 | See Asclepiaceae in Eilers & Roosa [1994]. | 2620 |
| Apocynaceae | Asclepias tuberosa L. | . | Dickinson. | Gravelly ridge along road. Sec. 33, SW 1/4. | T99N_R37W_Sec33 | Prairie steppe | Shimek, Bohumil | . | 8/5/1918 | 1918 | See Asclepiaceae in Eilers & Roosa [1994]. | 2025 |
| Apocynaceae | Asclepias tuberosa L. | . | Dickinson. | Lakeville twnshp. Sec. 33, E 1/2. | . | . | Conard, H. S. | . | 7/10/1923 | 1923 | See Asclepiaceae in Eilers & Roosa [1994]. | 1028 |
| Apocynaceae | Asclepias tuberosa L. | . | Dickinson. | Spirit Lake | . | . | Shimek, Bohumil | . | 08/01/1896 | 1896 | See Asclepiaceae in Eilers & Roosa [1994]. | 2619 |
| Apocynaceae | Asclepias tuberosa L. | . | Muscatine. | S. of 2nd road, S. of Wilton | . | Restored prairie, slope of big cut. | Shimek, Bohumil | . | 7/11/1923 | 1923 | See Asclepiaceae in Eilers & Roosa [1994]. | 2300 |
| Apocynaceae | Asclepias tuberosa L. | ssp. interior Woodson | Emmet. | Anderson Prairie State Preserve. | . | Dry prairie hill slope. | Elliott, Mike, Ben Mullarkey, Leanne Martin | . | . | . | See Asclepiadaceae in Eilers & Roosa [1994]. | 5620 |
| Apocynaceae | Asclepias verticillata L. | . | Dickinson. | Floete Prairie | . | Dry prairie hillside | Zylstra, Connie | . | 7/24/1958 | 1958 | See Asclepiaceae in Eilers & Roosa [1994]. | 2624 |
| Apocynaceae | Asclepias verticillata L. | . | Dickinson. | Hinshaw Prairie, NE of W. Okoboji. Sec. 1, NE1/4. | T99N_R37W_Sec1 | Sandy prairie | Grant, Martin L. | 8878 | 8/5/1948 | 1948 | See Asclepiaceae in Eilers & Roosa [1994]. | 1029 |
| Apocynaceae | Asclepias verticillata L. | . | . | E. of Iowa City | . | Prairie along R.R. | Shimek, Bohumil | . | 7/12/1903 | 1903 | See Asclepiaceae in Eilers & Roosa [1994]. | 2301 |
| Apocynaceae | Asclepias verticillata L. | . | Dickinson. | . | . | . | Takehara, Kenneth N. | 9 | 7/26/1949 | 1949 | See Asclepiaceae in Eilers & Roosa [1994]. | 1030 |
| Apocynaceae | Asclepias verticillata L. | . | Dickinson. | Iowa Lakeside Laboratory | . | Open area, weedy grasses and forbs. Fls white, common. | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/12/1973 | 1973 | See Asclepiaceae in Eilers & Roosa [1994]. | 5038 |
| Apocynaceae | Asclepias verticillata L. | . | Dickinson. | NE 1/4 Sec. 10 | T98N_R37W_Sec10 | Fence row. | Byerly, Dale M. | . | 7/24/1957 | 1957 | See Asclepiaceae in Eilers & Roosa [1994]. | 2622 |
| Apocynaceae | Asclepias verticillata L. | . | Dickinson. | NW 1/4 Sec. 20. | T99N_R37W_Sec20 | Permanent pasture. | Byerly, Dale M. | . | 8/3/1957 | 1957 | See Asclepiaceae in Eilers & Roosa [1994]. | 2621 |
| Apocynaceae | Asclepias verticillata L. | . | Dickinson. | Roadside, S. of Milford | . | . | Conard, H. S. | . | 7/6/1923 | 1923 | See Asclepiaceae in Eilers & Roosa [1994]. | 1032 |
| Apocynaceae | Asclepias verticillata L. | . | Dickinson. | Schoolyard 1/4 mile north and 2 miles west of Lakeside Lab. | . | Disturbed mid-prairie. | Chilton, Mike | . | 8/9/1958 | 1958 | See Asclepiaceae in Eilers & Roosa [1994]. | 2623 |
| Apocynaceae | Asclepias verticillata L. | . | Dickinson. | W. Okoboji | . | Prairie | Shimek, Bohumil | . | 8/6/1910 | 1910 | See Asclepiaceae in Eilers & Roosa [1994]. | 1031 |
| Apocynaceae | Asclepias viridiflora Raf. | . | Dickinson. | Cayler Prairie. Lakeville twnshp. Sec. 17, NW 1/4. | . | Dry prairie, frequent. | Thorne, Robert F. | 15984 | 6/17/1955 | 1955 | See Asclepiaceae in Eilers & Roosa [1994]. | 4428 |
| Apocynaceae | Asclepias viridiflora Raf. | . | Dickinson. | Floete Prairie, 1/4 mile south of Lakeside Lab. | . | Mid-prairie. | Chilton, Mike | . | 8/16/1958 | 1958 | See Asclepiaceae in Eilers & Roosa [1994]. | 2625 |
| Apocynaceae | Asclepias viridiflora Raf. | . | Dickinson. | Floete Prairie. Sec. 26, E-NW. | T99N_R37W_Sec26 | Prairie | Grant, Martin L. | 12445 | 8/6/1954 | 1954 | See Asclepiaceae in Eilers & Roosa [1994]. | 2529 |
| Apocynaceae | Asclepias viridiflora Raf. | . | Dickinson. | Floete Prairie | . | Dry prairie hillside | Zylstra, Connie | . | 8/15/1958 | 1958 | See Asclepiaceae in Eilers & Roosa [1994]. | 2626 |
| Apocynaceae | Asclepias viridiflora Raf. | . | Dickinson. | Hill west of Lab. | . | . | Conard, H. S. | . | 6/30/1923 | 1923 | Original i.d.: Acerates viridiflora (Raf.) Eaton Annot.: Asclepias viridiflora Raf.[anon.] See Asclepiaceae in Eilers & Roosa [1994]. | 1015 |
| Apocynaceae | Asclepias viridiflora Raf. | . | Dickinson. | Montgomery. Sec. 28, NW-NW. | T100N_R36W_Sec28 | Prairie. Crown purplish. Crown purplish | Grant, Martin L. | 8742 | 7/1/1948 | 1948 | Original i.d.: Acerates viridiflora (Raf.) Eaton var. (Ives) Gray. Annot.: Asclepias viridiflora Raf.[anon.] See Asclepiaceae in Eilers & Roosa [1994]. | 1013 |
| Apocynaceae | Asclepias viridiflora Raf. | . | Dickinson. | Montgomery. Sec. 28, NW-NW. | T100N_R36W_Sec28 | Prairie | Grant, Martin L. | 8741 | 7/1/1948 | 1948 | Original i.d.: Acerates viridiflora (Raf.) Eaton Annot.: Asclepias viridiflora Raf.[anon.] See Asclepiaceae in Eilers & Roosa [1994]. | 1011 |
| Apocynaceae | Asclepias viridiflora Raf. | . | Dickinson. | S. of mailbox, Miller's Bay | . | Prairie | Shimek, Bohumil | . | 7/11/1912 | 1912 | Original i.d.: Acerates viridiflora (Raf.) Eaton Annot.: Asclepias viridiflora Raf.[anon.]. See Asclepiaceae in Eilers & Roosa [1994]. | 1010 |
| Apocynaceae | Asclepias viridiflora Raf. | . | Dickinson. | Spirit Lake | . | . | Shimek, Bohumil | . | 08/01/1896 | 1896 | Original i.d.: A. viridiflora var. lanceolata (Ives) Gray. Annot.: = Asclepias viridiflora Raf., D. H. Nicolson (Grinnell) 1955 | 2627 |
| Apocynaceae | Asclepias viridiflora Raf. | . | Dickinson. | West Okoboji | . | . | Shimek, Bohumil | . | 7/1/1912 | 1912 | Original i.d.: A. viridiflora var. lanceolata (Ives) Gray. Annot.: = Asclepias viridiflora Raf.[anon.] | 1016 |
| Apocynaceae | Asclepias viridiflora Raf. | . | Muscatine. | East of Adams | . | Sandy alluvial area. | Shimek, Bohumil | . | 7/16/1910 | 1910 | Original i.d.: A. viridiflora var. lanceolata (Ives) Gray. Annot.: = Asclepias viridiflora Raf.[anon.] | 2296 |
| Araliaceae | Aralia nudicaulis L. | . | Dickinson. | Milford Woods. Sec. 10, NW-NE. | T98N_R37W_Sec10 | . | Grant, Martin L. | 11635 | 8/13/1952 | 1952 | . | 1483 |
| Araliaceae | Aralia racemosa L. | . | Clay. | Wanata State Park, 1/2 mile south of Peterson on Little Sioux River. Sec. 33, S 1/2. | T94N_R38W_Sec33 | Rich woods. | Thorne, Robert F. | 14472 | 8/3/1954 | 1954 | . | 4523 |
| Araliaceae | Aralia racemosa L. | . | Dickinson. | 2 miles west of Milford. | . | Upland woods along Little Sioux River. Plant about 4' in height. | Severe, Doris | 71 | 8/11/1957 | 1957 | . | 3071 |
| Araliaceae | Aralia racemosa L. | . | Dickinson. | Arnold's Park | . | Woods | Shimek, Bohumil | . | 8/9/1910 | 1910 | . | 944 |
| Araliaceae | Aralia racemosa L. | . | Dickinson. | Iowa Lakeside Laboratory | . | Wood understory. Height 120 cm. | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/17/1973 | 1973 | . | 5035 |
| Araliaceae | Aralia racemosa L. | . | Dickinson. | Milford Woods. Sec. 10, NW-NE. | T98N_R37W_Sec10 | Bur oak woods. Plant 5' tall. | Grant, Martin L. | 14997 | 8/4/1967 | 1967 | . | 4776 |
| Araliaceae | Aralia racemosa L. | . | Emmet. | Fort Defiance State Park. Estherville twnshp. Sec. 16. | . | Rich, wooded, north-facing slope | Cooperrider, Tom S. | 9511 | 06/23/1865 | 1865 | . | 4911 |
| Araliaceae | Panax quinquefolius L. | . | Clay. | Wanata State Park, 1/2 mile south of Peterson on Little Sioux River . Sec. 33, S 1/2. | T94N_R38W_Sec33 | Rich woods. | Thorne, Robert F. | 14520 | 8/3/1954 | 1954 | Iowa Nat. Areas Inventory Jeanne W. Bates 1983-08-05 | 4524 |
| Araliaceae | Panax quinquefolius L. | . | Dickinson. | 2 miles west of Milford. | . | Upland woods, along Little Sioux River. | Severe, Doris | 22 | 7/25/1957 | 1957 | Iowa Nat. Areas Inventory Jeanne W. Bates 1983-08-05 | 2609 |
| Araliaceae | Panax quinquefolius L. | . | Dickinson. | Milford Woods. Sec. 10, NE-NW . | T98N_R37W_Sec10 | Oak-ash forest. Fruit green [added note: fruits red, Aug. 13]. | Grant, Martin L. | 11586 | 7/30/1952 | 1952 | Iowa Nat. Areas Inventory Jeanne W. Bates 1983-08-05 | 1484 |
| Araliaceae | Panax quinquefolius L. | . | Emmet. | High Lake. Sec. 14, NE-NW. | T98N_R33W_Sec14 | . | Grant, Martin L. | 11192 | 7/14/1949 | 1949 | Iowa Nat. Areas Inventory Jeanne W. Bates 1983-08-05 | 945 |
| Aristolochiaceae | Asarum canadense L. | . | Cerro Gordo. | SW side of Buffalo Slough, Mason City | . | Woods | Shimek, Bohumil | . | 9/11/1925 | 1925 | Original i.d.: Asarum acuminatum Ashe. Annot.: = A. canadense L. [anon.]. County not listed by collector, but location is distinct. | 2610 |
| Aristolochiaceae | Asarum canadense L. | . | Hancock. | Pilot Knob State Park | T97N_R23W_ Sec3&4 | Rich woods | Thorne, Robert F. | 14606 | 8/10/1954 | 1954 | . | 4571 |
| Family | Scientific Name | Subspecific Category |
County | Locality | Tshp•Range•Sec. | Collector's Notes |
Collector | Collection Number |
Collection Date |
Collection Year |
Special Notes and Annotations |
Accession Number |
| Apiaceae | Zizia aptera (Gray) Fern. | . | Cottonwood | Shenk corner. Sec. 5, SE-SE. | T107N_R35W_Sec5 | Prairie | Grant, Martin L. | 8752 | 7/2/1948 | 1948 | Orig. i.d.: Zizia cordata (Walt.) DC. Annot.: = Z. aptera [anon.] | 980 |
| Apocynaceae | Asclepias viridiflora Raf. | . | Cottonwood | Shenk Corner. Sec. 5, SE-SE. | T107N_R25W_Sec5 | Prairie. Hood green, no purple | Grant, Martin L. | 8758 | 7/2/1948 | 1948 | Orig. i.d.: Acerates viridiflora (Raf.) Eaton var. lanceolata (Ives) Gray. Annot.: Asclepias viridiflora Raf.[anon.] | 1014 |
| Apocynaceae | Asclepias viridiflora Raf. | . | Cottonwood | Shenk corner. Sec. 5, SE-SE. | T107N_R35W_Sec5 | Prairie | Grant, Martin L. | 8757 | 7/2/1948 | 1948 | Orig. i.d.: Acerates viridiflora (Raf.) Eaton. Annot.: Asclepias viridiflora Raf.[anon.] | 1012 |
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