| 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 |
| Malvaceae | Abutilon theophrasti Medic. | . | Dickinson. | Iowa Lakeside Laboratory | . | Edge of garden | Bloethe, D., K. Cogan, & S. Pedersen | . | 8/2/1973 | 1973 | . | 5115 |
| Malvaceae | Abutilon theophrasti Medic. | . | Dickinson. | Roadside ditch. T100N_R36W_Sec? | . | . | Byerly, Dale M. | . | 8/9/1957 | 1957 | . | 3697 |
| Malvaceae | Althaea officinalis L. | . | Dickinson. | Milford | . | Houseyard | Blades, Helen | . | 7/1/1957 | 1957 | . | 3698 |
| Malvaceae | Callirhoe involucrata (T & G) Gray | . | Shelby. | . | . | . | Fitzpatrick, T. J. | . | 06/10/1894 | 1894 | Annot.: Iowa Nat. Areas Inventory Jeanne N. Bates 1983-08-06; !, C. involucrata (T.& G.) Gray, J. Novecele Bates, 08-06-1983. | 4721 |
| Malvaceae | Hibiscus trionum L. | . | Dickinson. | Farm yard north of Center Lake | . | Introduced several years ago as a purchased flower, seed escaped. | Conard, H. S. | . | 7/13/1923 | 1923 | . | 909 |
| Malvaceae | Hibiscus trionum L. | . | Dickinson. | Spooky Hollow. Sec. 5, NE-NE. | T98N_R37W_Sec5 | Pasture. Corolla cream-colored | Grant, Martin L. | 13998 | 7/30/1959 | 1959 | . | 3963 |
| Malvaceae | Hibiscus trionum L. | . | Johnson. | Along R.R. south of aviation field, south of Iowa City | . | Sandy prairie | Shimek, Bohumil | . | 7/28/1903 | 1903 | . | 3699 |
| Malvaceae | Malva neglecta Wallr. | . | Clay. | Wanata Park. | . | Roadside. Co white 2 x Ca | Grant, Martin L. | 12400 | 8/3/1954 | 1954 | . | 2522 |
| Malvaceae | Malva neglecta Wallr. | . | Dickinson. | At west door of furthermost east Lab on the campus of Lakeside Lab. | . | Near building | Chilton, Mike | . | 7/25/1958 | 1958 | . | 3700 |
| Malvaceae | Malva neglecta Wallr. | . | Dickinson. | Beach of Spirit Lake, near Minnesota line, west side. | . | . | Conard, H. S. | . | 6/23/1923 | 1923 | Orig. i.d.: Malva rotundifolia L. Annot.: M. neglecta Wallr., Martin L. Grant, 1952 | 910 |
| Malvaceae | Malva neglecta Wallr. | . | Dickinson. | Iowa Lakeside Laboratory | . | Along path in open area, weedy grasses and forbs | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/26/1973 | 1973 | . | 5154 |
| Malvaceae | Malva neglecta Wallr. | . | Dickinson. | Stony Lake. Sec. 29, NW-NW. | T99N_R38W_Sec29 | Pasture. Co white, lavender tipped | Grant, Martin L. | 11556 | 7/9/1952 | 1952 | . | 1480 |
| Malvaceae | Tilia americana L. | . | Dickinson. | Elmcrest | . | . | Conard, H. S. | . | 7/9/1923 | 1923 | Tiliaceae of Eilers & Roosa [1994]. | 908 |
| Malvaceae | Tilia americana L. | . | Dickinson. | Hottes Lake | . | . | Downing, W.L. | 9 | 7/20/1949 | 1949 | Tiliaceae of Eilers & Roosa [1994]. | 905 |
| Malvaceae | Tilia americana L. | . | Dickinson. | Iowa Lakeside Laboratory | . | Woody ravine, DBH 41 cm. Sparse in woods | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/13/1973 | 1973 | Tiliaceae of Eilers & Roosa [1994]. | 5065 |
| Malvaceae | Tilia americana L. | . | Dickinson. | Miller's Bay, West Lake Okoboji | . | Woods | Shimek, Bohumil | . | 8/20/1909 | 1909 | See Tiliaceae in Eilers & Roosa [1994]. | 907 |
| Malvaceae | Tilia americana L. | . | Dickinson. | Plants of 3 representative areas on the east shore of West Okoboji Lake. NW1/4 sec. 12. | T99N_R37W_Sec12 | Open woods. Oak woods. DBH 6 dec. Height 120 dec. | Naffziger, Joyce | 21 | 8/4/1961 | 1961 | Tiliaceae of Eilers & Roosa [1994]. | 5597 |
| Malvaceae | Tilia americana L. | . | Dickinson. | Plants of three representative areas of the east shore of West Okoboji Lake. SW1/4 Sec. 30. | T99N_R36W_Sec30 | Dense woods. Basswood woods. DBH 3 dec. Height 90 dec. | Naffziger, Joyce | 89 | 8/11/1961 | 1961 | Tiliaceae of Eilers & Roosa [1994]. | 5596 |
| Malvaceae | Tilia americana L. | . | Dickinson. | Sunken Lake | . | . | Takehara, Kenneth N. | 8 | 7/20/1949 | 1949 | Tiliaceae of Eilers & Roosa [1994]. | 906 |
| Malvaceae | Tilia americana L. | . | Winneshiek. | Forest City | . | . | Shimek, Bohumil | . | 09/09/1895 | 1895 | See Tiliaceae in Eilers & Roosa [1994]. | 4749 |
| Menispermaceae | Menispermum canadense L. | . | Dickinson. | Lakeside Laboratory grounds | . | Border of woods | Shimek, Bohumil | . | 8/1/1911 | 1911 | . | 679 |
| Menispermaceae | Menispermum canadense L. | . | Dickinson. | Campus, Lakeside Lab. | . | . | Conard, H. S. | . | 7/4/1923 | 1923 | . | 680 |
| Menispermaceae | Menispermum canadense L. | . | Dickinson. | Gull Point | . | Ash-Cottonwood woods. Flowers whitish | Grant, Martin L. | 14325 | 7/22/1960 | 1960 | . | 4012 |
| Menispermaceae | Menispermum canadense L. | . | Dickinson. | Iowa Lakeside Laboratory | . | Open grassy area. Twining vine | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/17/1973 | 1973 | . | 5152 |
| Menispermaceae | Menispermum canadense L. | . | Emmet. | Fort Defiance State Park | . | . | Thorne, Robert F. | 19576 | 6/27/1958 | 1958 | . | 4501 |
| Menispermaceae | Menispermum canadense L. | . | Johnson. | . | . | . | Hitchcock, A. S. | . | . | . | [No collection date given] | 3701 |
| Menispermaceae | Menispermum canadense L. | . | Johnson. | SUI campus | . | Climbing over bush-honeysuckle hedge. Male plant | Thorne, Robert F. | 19526 | 6/4/1958 | 1958 | . | 4466 |
| Menyanthaceae | Menyanthes trifoliata L. | . | Cerro Gordo. | Buffalo Slough, Mason City. Sec. 34, NE 1/4. | T97N_R20W_Sec34 | Swamp | Shimek, Bohumil | . | 6/17/1917 | 1917 | Iowa Nat. Areas Inventory Jeanne N. Bates 1983-08-06. County not listed by collector, but location is distinct. | 2293 |
| Menyanthaceae | Menyanthes trifoliata L. | var. minor Raf. | Winnebago. | 1.5 mi. south of Lake Mills. Sec. 15, N. | T99N_R23W_Sec15 | Drained Salix bog | Grant, Martin L. | 12288 | 7/8/1954 | 1954 | Iowa Nat. Areas Inventory Jeanne N. Bates 1983-08-06 | 1980 |
| Molluginaceae | Mollugo verticillata L. | . | Muscatine. | 1 st. mile south of Wilton | . | Roadbed along RR. | Shimek, Bohumil | . | 9/27/1924 | 1924 | See Aizoaceae in Eilers & Roosa [1994]. | 2152 |
| Moraceae | Morus alba L. | . | Dickinson. | E. Okoboji woods | . | Creek bottom forest. Unripe fruit rose, tree 20', dbh 6 in., naturalized. | Grant, Martin L. | 11539 | 6/30/1952 | 1952 | . | 1560 |
| Moraceae | Morus alba L. | . | Dickinson. | East Lake Okoboji. Sec. 14, NW-NW. | T99N_R36W_Sec14 | Oak-ash forest. Fruit turning from red to black. Female tree: 6 in. dbh, 25' high. Sterile tree: 16 in. dbh, 35' high | Grant, Martin L. | 13992 | 7/28/1959 | 1959 | . | 3957 |
| Moraceae | Morus alba L. | . | Dickinson. | Iowa Lakeside Laboratory | . | N40. dbh 27 cm. | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/18/1973 | 1973 | Orig. i.d.: Morus rubra L. Annot.: M. alba L., L.J. Eilers, Aug. 1980 | 5149 |
| Moraceae | Morus rubra L. | . | Iowa. | West of Dutch Lake | . | Low alluvial woods | Shimek, Bohumil | . | 10/6/1923 | 1923 | . | 2141 |
| Moraceae | Morus rubra L. | . | Johnson. | . | . | . | Linder, Mary F. | . | . | 1889 | [Date of collection given as 'Summer 1889'] | 3703 |
| Nelumbonaceae | Nelumbo lutea Pers. | . | Clayton. | . | . | . | Fitzpatrick, T.J. | . | 07/11/1895 | 1895 | Annot.: !, PHM, 1952. Nymphaeaceae of Eilers & Roosa [1994]. | 3719 |
| Nelumbonaceae | Nelumbo lutea Pers. | . | Dickinson. | South of 'The Grade' and west of Mini Wakan State Park on the north side of Big Spirit Lake. | T100N_R36W_Sec9 | Lake approximately 2 m deep. Colony 40 x 80 m. Mucilaginous juice until secreted from pores, then turning fibrous. Heavy predation by the Lotus Borer (Ostrinia penitalis (Grote)) (fide Dr. Barbara Abraham). See preserved specimen in the Iowa Lakeside Laboratory Entomology Collection. Sheet 1 of 4. | Ruchaber, Mitch & Lisa Fischer | . | 8/9/1995 | 1995 | Nymphaeaceae of Eilers & Roosa [1994]. | 5599 |
| Nelumbonaceae | Nelumbo lutea Pers. | . | Harrison. | 2 mi. north of Mandamin. Sec. 13, SW1/4. | T80N_R45W_Sec13 | Lake, 1' water. Co pale yellow | Grant, Martin L. | 11620 | 8/5/1952 | 1952 | Nymphaeaceae of Eilers & Roosa [1994]. | 1763 |
| Nelumbonaceae | Nelumbo lutea Pers. | . | Muscatine. | Muscatine | . | In ponds and sloughs | Reppert, F. | 309 | 07/01/1891 | 1891 | Annot.: !, PHM, 1952. As determined, Robert A. Davidson [no date]. County not listed by collector, but location is distinct. Nymphaeaceae of Eilers & Roosa [1994]. | 3720 |
| Nyctaginaceae | Mirabilis X collina Shinners | . | Dickinson. | Arend's Kettlehole | . | Oat field. Co pale pink | Grant, Martin L. | 12285 | 7/7/1954 | 1954 | Orig. i.d.: Mirabilis nyctaginea (Michx.) Macm. x M. albida (Walt.) Heimerl. Annot.: From FNA (vol. 4): The holotype of Mirabilis X collina Shinners is a hybrid between M. nyctaginea and M. albida. | 1919 |
| Nyctaginaceae | Mirabilis albida (Walt.) Heimerl. | . | Dickinson. | Floete Prairie | . | Dry prairie hillside | Zylstra, Connie | . | 8/12/1958 | 1958 | Annot.: !, MLG, 1959; M. hirsutus, JNB, 1983; M. albida (Walt.) Heimerl, D.R., 08-1993. | 3713 |
| Nyctaginaceae | Mirabilis hirsuta (Pursh) Macm. | . | Dickinson. | 3 m. NW of Lakeside Lab. | . | Roadside | Conard, H. S. | . | 7/16/1923 | 1923 | Orig. i.d.: Oxybaphus albidus (Walt.) Sweet. Annot.: Oxybaphus hirsutus (Pursh) Sweet[anon.]. Mirabilis hirsuta (Pursh.) MacM. [anon.] | 476 |
| Nyctaginaceae | Mirabilis hirsuta (Pursh) Macm. | . | Dickinson. | Arend's Kettlehole. Sec. 33, NW1/4 . | T99N_R37W_Sec33 | Prairie | Grant, Martin L. | 8895 | 8/9/1948 | 1948 | Original i.d.: Mirabilis hirsuta (Pursh) Macm. (Oxybaphus hirsutus (Pursh) Sweet) | 479 |
| Nyctaginaceae | Mirabilis hirsuta (Pursh) Macm. | . | Dickinson. | Arend's Kettlehole | . | Prairie. Co pale pink | Grant, Martin L. | 12284 | 7/7/1954 | 1954 | . | 1920 |
| Nyctaginaceae | Mirabilis hirsuta (Pursh) Macm. | . | Dickinson. | Floete Prairie. Sec. 26, E-NW. | T99N_R37W_Sec26 | Prairie. 1m. tall, Ca pale rose | Grant, Martin L. | 12440 | 8/6/1954 | 1954 | . | 2497 |
| Nyctaginaceae | Mirabilis hirsuta (Pursh) Macm. | . | Dickinson. | Found in the DeWall gravel pit 3.4 miles south of Milford, 3 miles west, and 0.8 mile south | . | . | Jordan, W.E. | . | 7/5/1957 | 1957 | . | 3714 |
| Nyctaginaceae | Mirabilis hirsuta (Pursh) Macm. | . | Dickinson. | North of Miller's Bay, West Lake Okoboji | . | Dry hills | Shimek, Bohumil | . | 8/19/1909 | 1909 | Orig. i.d.: Oxybaphus hirsutus (Pursh) Sweet. Annot.: Mirabilis hirsuta (Pursh) Macm. [anon.] | 474 |
| Nyctaginaceae | Mirabilis hirsuta (Pursh) Macm. | . | Dickinson. | South of Lakeside Laboratory, West Okoboji Lake | . | . | Shimek, Bohumil | . | 8/11/1910 | 1910 | Orig. i.d.: Oxybaphus hirsutus (Pursh) Sweet. Annot.: Mirabilis hirsuta (Pursh.) Macm. [anon.] | 1660 |
| Nyctaginaceae | Mirabilis hirsuta (Pursh) Macm. | . | Dickinson. | South of Miller's Bay | . | Prairie | Shimek, Bohumil | . | 8/1/1911 | 1911 | Orig. i.d.: Oxybaphus albidus (Walt.) Sweet. Annot.: This is evidently a misplaced specimen, as the specimens so identified were almost glabrous and the stem was glaucous. This one is undoubtedly O. hirsutus. B. Shimek; Oxybaphus hirsutus (Pursh.) Sweet [anon.]; Mirabilis hirsuta (Pursh.) Macm., M.H. [?] | 475 |
| Nyctaginaceae | Mirabilis hirsuta (Pursh) Macm. | . | Dickinson. | West of Green Slough . Sec. 35, NW-SE. | T99N_R37W_Sec35 | Prairie | Grant, Martin L. | 13906 | 7/1/1959 | 1959 | . | 3859 |
| Nyctaginaceae | Mirabilis hirsuta (Pursh) Macm. | . | Lyon. | Rock Rapids | . | . | Shimek, Bohumil | . | 08/05/1896 | 1896 | Orig. i.d.: Oxybaphus hirsutus (Pursh) Sweet. Annot.: = Mirabilis hirsutus [anon.]. !, MLG, 1954 | 3715 |
| Nyctaginaceae | Mirabilis nyctaginea (Michx.) Macm. | . | Dickinson. | Campus, Lakeside Laboratory | . | . | Conard, H. S. | . | 6/30/1923 | 1923 | Orig. i.d.: Oxybaphus nyctagineus (Michx.) Sweet. Annot.: Oxybaphus nyctaginea Sweet [anon.]; Mirabilis nyctaginea (Michx.) Macm. [anon.] | 478 |
| Nyctaginaceae | Mirabilis nyctaginea (Michx.) Macm. | . | Dickinson. | Iowa Lakeside Laboratory | . | Open roadside area. Fls lavender | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/13/1973 | 1973 | . | 5147 |
| Nyctaginaceae | Mirabilis nyctaginea (Michx.) Macm. | . | Dickinson. | Near Okoboji Station | . | Prairie | Shimek, Bohumil | . | 8/1/1901 | 1901 | Orig. i.d.: Oxybaphus nyctagineus (Michx.) Sweet. Annot.: Mirabilis nyctaginea (Michx.) Macm. [anon.] | 1661 |
| Nyctaginaceae | Mirabilis nyctaginea (Michx.) Macm. | . | Dickinson. | South of Miller's Bay, West Lake Okoboji | . | Edge of woods | Shimek, Bohumil | . | 8/19/1909 | 1909 | Orig. i.d.: Oxybaphus nyctagineus (Michx.) Sweet. Annot.: Mirabilis nyctaginea (Michx.) Macm. [anon.] | 477 |
| Nyctaginaceae | Mirabilis nyctaginea (Michx.) Macm. | . | Dickinson. | South of furthermost east lab. on campus of Lakeside Lab. | . | Moist woods | Chilton, Mike | . | 7/25/1958 | 1958 | . | 3717 |
| Nyctaginaceae | Mirabilis nyctaginea (Michx.) Macm. | . | Dickinson. | Spirit Lake, along west edge. Sec. 17, SW 1/4. | T100N_R36W_Sec17 | On rocky shoreline | Adams, Doyle D. | . | 8/17/1958 | 1958 | . | 3716 |
| Nyctaginaceae | Mirabilis nyctaginea (Michx.) Macm. | . | Johnson. | . | . | . | Shimek, Bohumil | . | . | 1891 | Orig. i.d.: Oxybaphus nyctagineus (Michx.) Sweet. Annot.: = Mirabilis nyctagineus [anon.] [Date of collection given as 1891]. | 3718 |
| Nymphaeaceae | Nuphar advena (Aiton) Aiton | . | Clay. | Pond along Highway 18 | T96N_R35W_Sec17 | 1-2' water-muck bottom | Begres, F.M. | . | 6/20/1958 | 1958 | . | 4804 |
| Nymphaeaceae | Nuphar advena (Aiton) Aiton | . | Dickinson. | Lily Lake | . | . | Conard, H. S. | . | 8/4/1923 | 1923 | . | 616 |
| Nymphaeaceae | Nuphar advena (Aiton) Aiton | . | Dickinson. | Lower Gar Lake | . | Lake | Shimek, Bohumil | . | 7/30/1912 | 1912 | Orig. i.d.: Nymphaea advena Ait. Annot.: = Nuphar advena [anon.] | 617 |
| Nymphaeaceae | Nymphaea tuberosa Paine | . | Dickinson. | . | T99N_R37W_ Sec23&26 | Shallow water | Shook, A. D. & E. O. Beal | 4 | 7/25/1950 | 1950 | Planted! [anon.] | 618 |
| Nymphaeaceae | Nymphaea tuberosa Paine | . | Hancock. | Pilot Knob State Park, Dead Man's Lake | T97N_R23W_Sec4 | Appx. 2-4' water. muck bottom. | Begres, F. M. | . | 7/9/1968 | 1968 | Nymphaea odorata Aiton ssp. tuberosa (Paine) Wiersema & Hellquist of FNA | 5478 |
| Nymphaeaceae | Nymphaea tuberosa Paine | . | Hancock. | Pilot Knob, Dead Man's Lake | . | Lake, 2' water. Co white | Grant, Martin L. | 12323 | 7/8/1954 | 1954 | . | 1924 |
| Nymphaeaceae | Nymphaea tuberosa Paine | . | Linn. | Cedar Rapids | . | . | Shimek, Bohumil | . | 07/29/1895 | 1895 | Orig. i.d.: Castalia odorata (Ait.) Woodville & Wood = Nymphaea odorata Ait. Annot.: N. tuberosa Paine, PHM, 1952. | 3721 |
| Nymphaeaceae | Nymphaea tuberosa Paine | . | Winnebago. | Forest City | . | . | Shimek, Bohumil | . | 09/09/1895 | 1895 | Orig. i.d.: Castalia odorata (Ait.) = Nymphaea odorata Paine. Annot.: N. tuberosa Paine, PHM, 1952 | 3722 |
| Oleaceae | Fraxinus americana L. | . | . | North of Iowa City | . | Upland woods. | Shimek, Bohumil | . | 7/9/1904 | 1904 | . | 2288 |
| Oleaceae | Fraxinus americana L. | . | Mahaska. | Southwest of Oskaloosa | . | Upland woods, the Buffs, Des Moines River | Shimek, Bohumil | . | 9/27/1920 | 1920 | !, R.A.D. 1956 | 3723 |
| Oleaceae | Fraxinus pennsylvanica Marsh. | . | Dickinson. | Iowa Lakeside Laboratory | . | Lawn. dbh 17 cm. | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/18/1973 | 1973 | . | 5146 |
| Oleaceae | Fraxinus pennsylvanica Marsh. | . | Dickinson. | Plants of three representative areas of the east shore of West Okoboji Lake. SW1/4 Sec. 30 | T99N_R36W_Sec30 | Dense woods. Basswood woods. DBH 3 dec. Height 120 dec. | Naffziger, Joyce | 76 | 8/11/1961 | 1961 | . | 5588 |
| Oleaceae | Fraxinus pennsylvanica Marsh. | . | Dickinson. | Sunset Beach. Sec. 30, SW-NW. | T99N_R36W_Sec30 | Bur oak forest | Grant, Martin L. | 14992 | 7/24/1967 | 1967 | . | 4770 |
| Oleaceae | Fraxinus pennsylvanica Marsh. | . | Washington. | 4 miles west of Crawfordsville, Fern Cliff. Marion twnshp. Sec. 24. | . | Low alluvial woods | Wagenknecht, B. L. | 481 | 6/29/1953 | 1953 | . | 3725 |
| Oleaceae | Fraxinus pennsylvanica Marsh. | var. austini Fern. | Dickinson. | Center Lake. Sec. 6, SW-SE. | T99N_R36W_Sec6 | Rocky lake-shore woods. Tree, 20' high. Twigs, petioles and lower surface of midribs pubescent | Grant, Martin L. | 11164 | 6/28/1949 | 1949 | . | 995 |
| Oleaceae | Fraxinus pennsylvanica Marsh. | var. austini Fern. | Dickinson. | E. Okoboji woods. Sec. 11, SE-SW. | T99N_R36W_Sec11 | Oak woods. Tree 30' tall, dbh 7 in. | Grant, Martin L. | 11536 | 6/30/1952 | 1952 | . | 1488 |
| Oleaceae | Fraxinus pennsylvanica Marsh. | var. lanceolata (Borkh.) Sarg. | Dickinson. | Lakeside Lab. grounds | . | Woods | Shimek, Bohumil | . | 8/20/1911 | 1911 | Annot.: (?) Fraxinus nigra Marsh., A.P.K.; Absolutely not nigra! [underlined] Note fruit and leaflets. Forms of this kind in the region often approach F. pennsylvanica., B. Shimek | 996 |
| Oleaceae | Fraxinus pennsylvanica Marsh. | var. lanceolata (Borkh.) Sarg. | Dickinson. | Plants of outlet of Lower Gar Lake. | T98N_R36W_Sec5 | Shallow water. | Shannon, Jerry A. | 5 | 7/28/1961 | 1961 | . | 5462 |
| Oleaceae | Fraxinus pennsylvanica Marsh. | var. lanceolata (Borkh.) Sarg. | Dickinson. | SE side of Lower Gar Lake | . | Wooded banks | Shimek, Bohumil | . | 6/25/1930 | 1930 | . | 1783 |
| Oleaceae | Fraxinus pennsylvanica Marsh. | var. lanceolata (Borkh.) Sarg. | Emmet. | West of Estherville | . | Upland woods | Shimek, Bohumil | . | 08/03/1899 | 1899 | . | 3724 |
| Oleaceae | Fraxinus pennsylvanica Marsh. | var. subintegerrima (Vahl.) Fern. | Dickinson. | E. Okoboji woods. Sec. 11, SW-SW. | T99N_R36W_Sec11 | Oak woods . Tree, 35', dbh 8 in. | Grant, Martin L. | 11535 | 6/30/1952 | 1952 | . | 1489 |
| Oleaceae | Fraxinus pennsylvanica Marsh. | var. subintegerrima (Vahl.) Fern. | Dickinson. | East Lake Okoboji. Sec. 14, NW-NW. | T99N_R36W_Sec14 | Creek bank in oak-ash forest. Seedlings; simple leaves | Grant, Martin L. | 13986 | 7/28/1959 | 1959 | . | 3951 |
| Oleaceae | Fraxinus pennsylvanica Marsh. | var. subintegerrima (Vahl.) Fern. | Dickinson. | Iowa Lakeside Laboratory | . | On edge of open area, near labs. dbh 25cm. | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/13/1973 | 1973 | . | 5144 |
| Oleaceae | Fraxinus pennsylvanica Marsh. | var. subintegerrima (Vahl.) Fern. | Dickinson. | Lake Okoboji | . | Lake shore | Grant, Martin L. | 8271 | 8/23/1938 | 1938 | . | 1592 |
| Oleaceae | Syringa amurensis Rupr. | var. japonica (Dcne.) Franch & Sav. | Dickinson. | Omaha Beach, West Lake Okoboji. Sec. 18, SW-SW. | T99N_R36W_Sec18 | Two trees in a vacant lot. Co cream-white. Tree 18' tall, 10 in. dbh; flowers with strong sweet odor | Grant, Martin L. | 14338 | 7/1/1960 | 1960 | . | 4019 |
| Oleaceae | Syringa vulgaris L. | . | Dickinson. | Iowa Lakeside Laboratory | . | Lawn planting. Shrub 2 - 3 m. | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/24/1923 | 1923 | . | 5130 |
| Oleaceae | Syringa vulgaris L. | . | Woodbury. | Sioux City. Woodbury twnshp. | . | Cultivated. 3 m. tall, 2 in. dbh | McArthur, Jean | . | 7/4/1957 | 1957 | . | 3726 |
| Onagraceae | Calylophus serrulatus (Nutt.) Raven | . | Emmet. | Anderson Prairie State Preserve. | . | Dry prairie hill slope. | Elliott, Mike, Ben Mullarkey, Leanne Martin | . | . | . | . | 5631 |
| Onagraceae | Calylophus serrulatus (Nutt.) Raven | . | Emmet. | Anderson Prairie State Preserve. | . | Wet prairie between hills. | Nixon, Jennifer, Heath Reinke, Michaeleen Gerken | . | 7/6/2001 | 2001 | . | 5655 |
| Onagraceae | Circaea lutetiana L. | . | Dickinson. | East of Arnold's Park | . | Woods | Shimek, Bohumil | . | 7/15/1912 | 1912 | Annot.: = C. quadrisulcata [anon.] | 3729 |
| Onagraceae | Circaea lutetiana L. | . | Dickinson. | Elmcrest | . | . | Conard, H. S. | . | 7/9/1923 | 1923 | Annot.: = C. quadrisulcata [anon.] | 925 |
| Onagraceae | Circaea lutetiana L. | . | Dickinson. | Gull Point State Park, West Lake Okoboji | . | Rich woods, near waste pile | Zylstra, Connie | . | 7/4/1958 | 1958 | Orig. i.d.: Circaea quadrisulatus (Maxim.) Franch & Sav. Annot.: C. lutetiana L. Plants Database & The Plant List (www.theplantlist.org). | 3730 |
| Onagraceae | Circaea lutetiana L. | . | Dickinson. | Gull Point State Park | . | . | Severe, Doris | 54 | 8/7/1957 | 1957 | Orig. i.d.: Circaea quadrisulatus (Maxim.) Franch & Sav. Annot.: C. lutetiana L. Plants Database & The Plant List (www.theplantlist.org). | 3728 |
| Onagraceae | Circaea lutetiana L. | . | Dickinson. | Iowa Lakeside Laboratory | . | Acer negundo-Quercus macrocarpa woodland. Fls. white, frequent in woods | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/23/1973 | 1973 | Orig. i.d.: Circaea quadrisulatus (Maxim.) Franch & Sav. Annot.: C. lutetiana L. Plants Database & The Plant List (www.theplantlist.org). | 5136 |
| Onagraceae | Circaea lutetiana L. | . | Dickinson. | Plants of three representative areas of the east shore of West Okoboji Lake. | T99N_R36W_ Sec18 | Dense woods. Maple woods. SW1/4 sec. 18. | Naffziger, Joyce | 63 | 8/11/1961 | 1961 | Orig. i.d: is Hackelia virginiana (L.) J.M. Johnston. Annot.: Circaea quadrisulcata (Maxim.) Franch. & Savigny R.F. Thorne 1961; C. lutetiana L. Plants Database & The Plant List (www.theplantlist.org). | 5541 |
| Onagraceae | Circaea lutetiana L. | . | Dickinson. | Robinson Lake. Sec. 18, SE-NE. | T100N_R36W_Sec18 | Sandy lake shore | Grant, Martin L. | 8853 | 7/26/1948 | 1948 | Annot.: = C. quadrisulcata [anon.] | 924 |
| Onagraceae | Circaea lutetiana L. | . | Jones. | Onslow | . | . | Cameron, J.E. | . | 07/10/1895 | 1895 | Annot.: = C. quadrisulcata (Maxim.) Franch. & Sav., Tom S. Cooperrider, 01-17-1958 | 3727 |
| Onagraceae | Epilobium coloratum Biehler | . | Hancock | Pilot Knob Park, Dead Man's Lake. | . | Sphagnum bog. Corolla pink. | Grant, Martin L. | 12532 | 21-Aug-54 | 1954 | . | 3721 |
| Onagraceae | Epilobium coloratum Bielher | . | Dickinson. | Plants of Marble Lake. Spirit Lake twp. | T100N_R36W_Sec17 | Wet shore. | Roosa, Dean M. | 39 | 8/4/1961 | 1961 | . | 5540 |
| Onagraceae | Epilobium coloratum Muhl. | . | Dickinson | S. of Miller's Bay. W. lake Okoboji | . | Swamp | Shimek, B. | . | Aug. 5, 1910 | 1910 | Annot.: M. Grant., 1949 | 929 |
| Onagraceae | Epilobium coloraturm Muhl. | . | Dickinson | . | R36W T98N Sect. 6 and R36W T99N Sect. 31 | Damp ground | A. D. Shook & E. 0. Beal | 47 | 8/1/1950 | 1950 | . | 928 |
| Onagraceae | Epilobium coloraturm Muhl. | . | Dickinson | Crescent Inn | . | . | Conard, H.S. | . | 16-Aug-23 | 1923 | Orig. i.d. E. adenocaulon Annot.: M.L. Grant, 1949 | 926 |
| Onagraceae | Epilobium coloraturm Muhl. | . | Dickinson | N. shore Miller's Bay | . | Edge of swamp. | B. Shimek | . | 31-Jul-11 | 1911 | Orig. i.d. E. adenocaulon Haussk. Annot.: M.L. Grant, 1949 | 927 |
| Onagraceae | Epilobium glandulosum Lehm. | . | Dickinson | Along Little Miller's Bay, W. Lake Okoboji | . | . | William B. Fox | 63 | 30-Jul-41 | 1941 | orig. i.d.: Epilobium adenocaulon Haussk. see Epilobium ciliatum ssp. glandulosum (Lehm.) Hoch & P.H.Raven [theplantlist.org] | 3733 |
| Onagraceae | Epilobium glandulosum Lehm. | . | Dickinson | Along NE edge of Spirit Lake | T100NR36WSec.15 | On rocky shoreline. SE1/4_sec.15 | Doyle D. Adams | . | 7/28/1958 | 1958 | see Epilobium ciliatum ssp. glandulosum (Lehm.) Hoch & P.H.Raven [theplantlist.org] | 3732 |
| Onagraceae | Epilobium leptophyllum Raf. | . | Cerro Gordo | N. central part of Buffalo Slough, Mason City | . | swamp | Shimek, B. | . | 5-Jul-20 | 1920 | orig. i.d. E. molle Torr. | 2267 |
| Onagraceae | Epilobium leptophyllum Raf. | . | Clay | Dewey's Pasture | T97N_R35W_Sec.25 | Slough. Corolla white, drying pink | Grant, Martin L. | 8920 | 10-Aug-48 | 1948 | Orig. i.d. E. densum Raf. | 931 |
| Onagraceae | Epilobium leptophyllum Raf. | . | Dickinson | N. of Lakeside Lab. | . | hanging bog | Fox, William B. | 107 | 26-Jul-41 | 1941 | orig. i.d. Epilobium densum Raf. Annot PHM, 1952 | 3735 |
| Onagraceae | Epilobium leptophyllum Raf. | . | Dickinson | On lake W. Okoboji | . | marsh | Grant, Martin L. | 8285 | 23-Aug-38 | 1938 | . | 4679 |
| Onagraceae | Epilobium leptophyllum Raf. | . | Dickinson | S.W. side of Silver Lake | . | bog | Shimek, B. | . | 25-Aug-34 | 1934 | orig. i.d. E. densum Raf. | 3736 |
| Onagraceae | Epilobium leptophyllum Raf. | . | Dickinson | Silver Lake Fen | T100N_R38W_Sec.32 | Wet ground | A. D. Shook & E. O. Beal | 103 | 8/8/1950 | 1950 | Orig. i.d. Epilobium densum Raf. | 930 |
| Onagraceae | Epilobium leptophyllum Raf. | . | Dickinson | Silver Lake | . | Fen, calcareous soil, corolla white | Grant, Martin L. | 11280 | 15-Aug-49 | 1949 | orig. i.d. E. densum Raf. | 932 |
| Onagraceae | Epilobium leptophyllum Raf. | . | Emmet | . | . | . | Cratty, R.J. | . | August 15, 1884 | 1884 | orig. i.d: Epilobium palustris L. var. lineare Gray | 3734 |
| Onagraceae | Epilobium leptophyllum Raf. | . | Hancock | Pilot Knob, Dead Man's Lake | . | Floating, sphagnum mat | Grant, Martin L. | 12319 | 8-Jul-54 | 1954 | . | 1974 |
| Onagraceae | Gaura biennis L. | . | Muscatine. | East of Fruitland | . | Sandy alluvial flat | Shimek, Bohumil | . | 8/28/1915 | 1915 | !, Robert A. Davidson, 06-1956 | 3737 |
| Onagraceae | Gaura biennis L. | . | Muscatine. | SE of Salisbury bridge | . | Alluvial prairie | Shimek, Bohumil | . | 9/6/1924 | 1924 | . | 2268 |
| Onagraceae | Gaura coccinea Pursh | . | Monona. | Turin | . | Prairie | Shimek, Bohumil | . | 6/6/1919 | 1919 | !, J. Novacele Bates, JN Bates, 08-06-1983 | 3738 |
| Onagraceae | Gaura parviflora Dougl. | . | Harrison. | 6.5 mi. SE Mondamin. Sec. 11, NE-SE. | T79N_R44W_Sec11 | Loess, bluff. 6' high; co red | Grant, Martin L. | 11625 | 8/5/1952 | 1952 | . | 1775 |
| Onagraceae | Ludwigia alternifolia L. | . | Iowa. | East of Homestead | . | Low place at old dune | Shimek, Bohumil | . | 8/18/1928 | 1928 | !, PHM, 1952 | 3739 |
| Onagraceae | Ludwigia palustris (L.) Elliott | var. americana (DC.) Fern & Grisc. | Muscatine. | . | . | . | Reppert, F. | . | 09/01/1894 | 1894 | Annot.: var. americana (DC.) Fern & Grisc., PHM, 1952 | 3740 |
| Onagraceae | Ludwigia polycarpa Short & Peter | . | Dickinson. | South of Miller's Bay, West Lake Okoboji. | . | Swamp | Shimek, Bohumil | . | 8/4/1910 | 1910 | . | 933 |
| Onagraceae | Oenothera biennis L. | . | Dickinson | . | T100N_R36W_Sec.8 8. | Roadside ditch. E1/2_Sec. 8 | Dale M. Byerly | . | 9-Aug-57 | 1957 | . | 3741 |
| Onagraceae | Oenothera biennis L. | . | Dickinson | Cayler Prairie | T99N_R37W_Sec. 17 | NW1/4_Sec.17. Near north boundary of prairie. | Grant, Martin L. | 13969 | 13-Jul-59 | 1959 | . | 3935 |
| Onagraceae | Oenothera biennis L. | . | Dickinson | East side of Spirit Lake | . | . | Conard, H. S. | . | 8/1/1923 | 1923 | Several i.d.'s listed. | 935 |
| Onagraceae | Oenothera biennis L. | . | Dickinson | Floete Prairie 1/4 mile south of Lakeside Lab. | . | 18 inches of stem removed. Low prairie. | Mike Chilton | . | 7/30/1958 | 1958 | . | 3742 |
| Onagraceae | Oenothera biennis L. | . | Dickinson | Floete Prairie. | . | Low wet prairie. Entire plant 4 feet tall. | Connie Zylstra | . | 30-Jul-58 | 1958 | . | 3743 |
| Onagraceae | Oenothera biennis L. | . | Dickinson | IA Lakeside Laboratory Campus | . | open field, 1-2 m. tall. | Bloethe, D., K. Cogan, S. Pedersen | . | 24-Jul-73 | 1973 | . | 5135 |
| Onagraceae | Oenothera biennis L. | var. pycnocarpa (Atkins & Bart.) Wieg. | Dickinson | Trapper's Bay, Lake Park | . | oak clearing. corolla yellow. | Grant, Martin L. | 11631 | 12-Aug-52 | 1952 | . | 1482 |
| Onagraceae | Oenothera parviflora L. | . | Dickinson | SE. end of Floete Prairie | T99n_R37W_Sec.26 | Corolla yellow. Edge of cult. field. SE1/4NW1/4_Sec.26 | Grant, Martin L. | 14989 | 19-Jul-67 | 1967 | Extensive quant. and qual. notes about plant listed on label. | 4768 |
| Onagraceae | Oenothera perennis L. | . | Howard. | Hayden Prairie | . | Collected in mowed prairie pathway. | Hey, Jane | . | 8/2/1983 | 1983 | . | 5460 |
| Onagraceae | Oenothera pratensis (Small) Rob. | . | Johnson | Along R.R. E. of Iowa City | . | Low ground. | Shimek, B. | . | 21-Jun-20 | 1920 | Synonym listed on label: O. pilosella [does not agree with theplantlist.org] | 2271 |
| Onagraceae | Oenothera rhombipetala Nutt. | . | Johnson | Along R.R. S. of aviation field. | . | sandy prairie | Shimek, B. | . | 28-Jul-03 | 1903 | see Oenothera heterophylla var. rhombipetala (Nutt. ex Torr. & A. Gray) Fosberg [theplantlist.org] | 2272 |
| Onagraceae | Oenothera serrulata Nutt. | . | Cerro Gordo | Hackberry Grove | . | . | Shimek, B. | . | July 2, 1896 | 1896 | Location currently known as Claybanks Forest State Preserve [http://www.iowadnr.gov/portals/idnr/uploads/preserves/preservesguide.pdf]. see Calylophus serrulata (Nutt.) P.H.Raven [theplantlist.org]. | 3746 |
| Onagraceae | Oenothera serrulata Nutt. | . | Cerro Gordo | N.E. side of Buffalo Slough, Mason City, IA | . | Prairie openings above bluffs. | Shimek, B. | . | 23-Aug-18 | 1918 | see Calylophus serrulata (Nutt.) P.H.Raven [theplantlist.org]. | 2273 |
| Onagraceae | Oenothera serrulata Nutt. | . | Dickinson | . | . | Dry prairie knoll of n. end of lake. | Conard, H.S. | . | 6/23/1923 | 1923 | Name also listed on sheet: Meriolix serrulata. see Calylophus serrulata (Nutt.) P.H.Raven [theplantlist.org]. | 937 |
| Onagraceae | Oenothera serrulata Nutt. | . | Dickinson | Floete Prairie | . | Low prairie | Connie Zylstra | . | 24-Jul-58 | 1958 | see Calylophus serrulata (Nutt.) P.H.Raven [theplantlist.org]. | 3747 |
| Onagraceae | Oenothera serrulata Nutt. | . | Dickinson | Montgomery | T100N_R36W_Sec.28 | prairie. NW1/4NW1/4_Sec. 28 | Grant, Martin L. | 8744 | 1-Jul-48 | 1948 | see Calylophus serrulata (Nutt.) P.H.Raven [theplantlist.org]. | 936 |
| Onagraceae | Oenothera serrulata Nutt. | . | Dickinson | Spirit Lake | . | . | Shimek, B. | . | August 1, 1896 | 1896 | see Calylophus serrulata (Nutt.) P.H.Raven [theplantlist.org]. | 3745 |
| Onagraceae | Oenothera serrulata Nutt. | . | Dickinson | Terrace Park, W. Okoboji Lake | . | sandy prairie (old beach) | Shimek, B. | . | 24-Jun-12 | 1912 | see Calylophus serrulata (Nutt.) P.H.Raven [theplantlist.org]. | 1780 |
| Onagraceae | Oenothera serrulata Nutt. | . | Emmet | . | . | . | Cratty, R.I. | . | . | . | see Calylophus serrulata (Nutt.) P.H.Raven [theplantlist.org]. | 3744 |
| Onograceae | Oenothera biennis L. | . | Clayton | Near Point Lookout, McGregor Heights, McGregor | . | prairie opening | Shimek, B. | . | 31-Jul-19 | 1919 | orig. i.d.: Oenothera muricata L. | 2269 |
| Onograceae | Oenothera biennis L. | . | Dickinson | W. Okoboji Lake | . | low prairie | Shimek, B. | . | 20-Aug-09 | 1909 | Several i.d.'s listed on label. | 934 |
| Onograceae | Oenothera biennis L. | . | Johnson | E. of Iowa City, IA | . | Prairie along R.R. | Shimek, B. | . | 19-Jul-23 | 1923 | Orig. i.d. O. muricata L. | 2270 |
| Orobanchaceae | Agalinis aspera (Dougl. ex Benth.) Britt. | . | Dickinson. | Around sunken Kettlehole. Sec. 33, SW1/4. | T99N_R37W_Sec33 | Dry prairie ridge | Shimek, Bohumil | . | 8/24/1919 | 1919 | Orig. i.d.: Gerardia aspera Dougl. Annot.: = Agalinis aspera (Benth.) Brit., D.R., 08-1993. See Scrophulariaceae in Eilers & Roosa [1994]. | 1794 |
| Orobanchaceae | Agalinis aspera (Dougl. ex Benth.) Britt. | . | Dickinson. | At Station 1, Council Bluffs | . | Prairie-steppe, loess ridge | Shimek, Bohumil | . | 9/14/1908 | 1908 | Orig. i.d.: Gerardia aspera Dougl. Annot.: = Agalinis aspera (Benth.) Brit., D.R., 08-1993. See Scrophulariaceae in Eilers & Roosa [1994]. | 4205 |
| Orobanchaceae | Agalinis aspera (Dougl. ex Benth.) Britt. | . | Dickinson. | Lookout, Miller's Bay, West Lake Okoboji | . | Dry prairie | Shimek, Bohumil | . | 8/18/1909 | 1909 | Orig. i.d.: Gerardia aspera Dougl. Annot.: = Agalinis aspera (Benth.) Brit., D.R., 08-1993. See Scrophulariaceae in Eilers & Roosa [1994]. | 1166 |
| Orobanchaceae | Agalinis aspera (Dougl. ex Benth.) Britt. | . | Dickinson. | Spooky Hollow. Sec. 33, NE-SW. | T99N_R37W_Sec33 | Prairie. Co rose, 2.2 cm. long | Grant, Martin L. | 8970 | 8/15/1948 | 1948 | Orig. i.d.: Gerardia aspera Dougl. Annot.: = Agalinis aspera (Benth.) Brit., D.R., 08-1993. See Scrophulariaceae in Eilers & Roosa [1994]. | 1165 |
| Orobanchaceae | Agalinis aspera (Dougl. ex Benth.) Britt. | . | Lyon. | Granite | . | . | Shimek, Bohumil | . | 08/04/1896 | 1896 | Orig. i.d.: Gerardia aspera Dougl. Annot.: = Agalinis aspera (Benth.) Brit., D.R., 08-1993. See Scrophulariaceae in Eilers & Roosa [1994]. | 4204 |
| Orobanchaceae | Agalinis aspera (Dougl. ex Benth.) Britt. | . | Plymouth. | Sec. 8, SW-SE. | T91N_R48W_Sec8 | Prairie | Grant, Martin L. | 12475 | 8/12/1954 | 1954 | Orig. i.d.: Gerardia aspera Dougl. Annot.: Agalinis aspera (Benth.) Brit., J Novacele Bates, 08-06-1983. See Scrophulariaceae in Eilers & Roosa [1994]. | 2536 |
| Orobanchaceae | Agalinis aspera (Dougl. ex Benth.) Britt. | . | Plymouth. | Sioux twnshp. Sec. 8. | T91N_R48W_Sec8 | Upland prairie on loess hills | Thorne, Robert F. | 14672 | 8/12/1954 | 1954 | Orig. i.d.: Gerardia aspera Dougl. Annot.: Agalinis aspera (Benth.) Brit., J. Novacele Bates, 08-06-1983. See Scrophulariaceae in Eilers & Roosa [1994]. | 4553 |
| Orobanchaceae | Agalinis purpurea (L.) Pennell | . | Dickinson. | Hanging bog by Silver Lake | . | . | Anderson, W. A. | . | 8/15/1932 | 1932 | Orig. i.d.: Agalinis paupercula (Gray) Brit. Annot.: Gerardia purpurea L., W.A.A., 1942; = Agalinis purpurea (L.) Pennell, D.R., 08-1993. See Scrophulariaceae in Eilers & Roosa [1994]. | 1168 |
| Orobanchaceae | Agalinis purpurea (L.) Pennell | . | Dickinson. | Silver Lake | . | Fen, calcareous. Co rose | Grant, Martin L. | 11278 | 8/15/1949 | 1949 | Orig. i.d.: Gerardia paupercula (Gray) Brit. Annot.: = Agalinis purpurea, D.R., 08-1993. See Scrophulariaceae in Eilers & Roosa [1994]. | 1169 |
| Orobanchaceae | Agalinis purpurea (L.) Pennell | . | Dickinson. | Southwest side of Silver Lake | . | Bog | Shimek, Bohumil | . | 8/25/1934 | 1934 | Orig. i.d.: Gerardia paupercula (Gray) Brit. Annot.: !, PHM, 1952; G. purpurea L., L. Eilers, 08-1980; = Agalinis purpurea (L.) Pennell, D.R., 08-1993. See Scrophulariaceae in Eilers & Roosa [1994]. | 4207 |
| Orobanchaceae | Agalinis tenuifolia (Vahl) Raf. | . | Dickinson. | Banks of canal near Crescent Inn | . | . | Conard, H. S. | . | 8/16/1923 | 1923 | Orig. i.d.: Gerardia tenuifolia Vahl Annot.: var.parviflora Nutt., Martin L. Grant, 1954; = Agalinis tenuifolia (Vahl.) Raf., D.R., 08-1993. See Scrophulariaceae in Eilers & Roosa [1994]. | 1171 |
| Orobanchaceae | Agalinis tenuifolia (Vahl) Raf. | . | Dickinson. | Canal | T99N_R37W_ Sec23&26 | Wet ground | Shook, A. D. & E. O. Beal | 101 | 8/9/1950 | 1950 | Orig. i.d.: Gerardia tenuifolia Vahl Annot.: var.parviflora Nutt., Martin L. Grant, 1954; = Agalinis tenuifolia (Vahl.) Raf., D.R., 08-1993. See Scrophulariaceae in Eilers & Roosa [1994]. | 1173 |
| Orobanchaceae | Agalinis tenuifolia (Vahl) Raf. | . | Dickinson. | Hotel Orleans | . | Low ground | Shimek, Bohumil | . | 8/16/1909 | 1909 | Orig. i.d.: Gerardia tenuifolia Vahl Annot.: var.parviflora Nutt., Martin L. Grant, 1954; = Agalinis tenuifolia (Vahl.) Raf., D.R., 08-1993. See Scrophulariaceae in Eilers & Roosa [1994]. | 1170 |
| Orobanchaceae | Agalinis tenuifolia (Vahl) Raf. | . | Dickinson. | South of Milford. Sec. 13, NW1/4. | T98N_R37W_Sec13 | Cottonwood grove. Co rose, 1 cm. long | Grant, Martin L. | 12451 | 8/10/1954 | 1954 | Orig. i.d.: Gerardia tenuifolia Vahl var. parviflora Nutt. Annot.: = Agalinis tenuifolia (Vahl.) Raf., D.R. 08-1993. See Scrophulariaceae in Eilers & Roosa [1994]. | 2537 |
| Orobanchaceae | Agalinis tenuifolia (Vahl) Raf. | . | Emmet. | . | . | . | Cratty, R.I. | . | . | . | Orig. i.d.: Gerardia tenuifolia Vahl Annot.: G.t. parviflora Nutt., F.W. P., 1938; = Agalinis tenuifolia (Vahl.) Raf. [anon.]. [No date of collection given]. See Scrophulariaceae in Eilers & Roosa [1994]. | 4210 |
| Orobanchaceae | Agalinis tenuifolia (Vahl) Raf. | . | Johnson. | Cedar twnshp. | T81N_R5W_Sec35 | Sandy, seepage slopes along small branches | Thorne, Robert F. | 15832 | 5/14/1955 | 1955 | Orig. i.d.: Gerardia tenuifolia Vahl Annot.: = Agalinis tenuifolia (Vahl.) Raf., D.R., 08-1993. See Scrophulariaceae in Eilers & Roosa [1994]. | 4482 |
| Orobanchaceae | Castilleja coccinea (L.) Spreng. | . | Howard. | 6.5 miles south of Highway 9 along Highway 63. Parris twnshp. Sec. 29 W 1/2 & Sec. 30 E 1/2. | . | Moist prairie | Thorne, Robert F. | 17673 | 6/17/1956 | 1956 | See Scrophulariaceae in Eilers & Roosa [1994]. | 4588 |
| Orobanchaceae | Castilleja coccinea (L.) Spreng. | . | Muscatine. | Wild-cat Den | . | Prairie openings | Savage, T.E. | . | 05/12/1899 | 1899 | See Scrophulariaceae in Eilers & Roosa [1994]. | 2444 |
| Orobanchaceae | Castilleja sessiliflora Pursh | . | Dickinson. | Cayler Prairie | . | Gravel knob | Grant, Martin L. | 14993 | 7/31/1967 | 1967 | See Scrophulariaceae in Eilers & Roosa [1994]. | 4771 |
| Orobanchaceae | Castilleja sessiliflora Pursh | . | Dickinson. | Floete Prairie. Sec. 26, NE-NW. | T99N_R37W_Sec26 | High prairie. Co cream-colored | Grant, Martin L. | 14229 | 6/15/1960 | 1960 | See Scrophulariaceae in Eilers & Roosa [1994]. | 4000 |
| Orobanchaceae | Castilleja sessiliflora Pursh | . | Dickinson. | Hinshaw Prairie | T99N_R36W_Sec6 | Prairie | Grant, Martin L. | 11153 | 6/23/1949 | 1949 | See Scrophulariaceae in Eilers & Roosa [1994]. | 1155 |
| Orobanchaceae | Castilleja sessiliflora Pursh | . | Dickinson. | Near Little Sioux River, 3 mi. SW of Lakeside Lab. | . | Prairie hill | Conard, H. S. | . | 6/28/1923 | 1923 | See Scrophulariaceae in Eilers & Roosa [1994]. | 1154 |
| Orobanchaceae | Castilleja sessiliflora Pursh | . | Dickinson. | Sec. 26, NW 1/4. | T99N_R37W_Sec26 | Dry prairie | Shimek, Bohumil | . | 7/24/1924 | 1924 | See Scrophulariaceae in Eilers & Roosa [1994]. | 1793 |
| Orobanchaceae | Castilleja sessiliflora Pursh | . | Dickinson. | Southwest of Miller's Bay, West Lake Okoboji | . | Prairie | Cavanagh, Lucy M . | . | 5/20/1910 | 1910 | See Scrophulariaceae in Eilers & Roosa [1994]. | 1156 |
| Orobanchaceae | Castilleja sessiliflora Pursh | . | Plymouth. | Joy Creek | T91N_R48W_Sec30 | Loess bluff | Grant, Martin L. | 12264 | 7/2/1954 | 1954 | See Scrophulariaceae in Eilers & Roosa [1994]. | 1992 |
| Orobanchaceae | Castilleja sessiliflora Pursh | . | Pottawattamie. | Council Bluffs | . | Prairie-steppe on loess ridges | Shimek, Bohumil | . | 5/20/1903 | 1903 | See Scrophulariaceae in Eilers & Roosa [1994]. | 4201 |
| Orobanchaceae | Dasistoma macrophylla (Nutt.) Raf. | . | Johnson. | Penn twnshp. | . | . | Shimek, Bohumil | . | 07/27/1895 | 1895 | Orig. i.d.: Gerardia flava L. Annot.: Dasistima macrophylla, Robert F. Thorne, 1958; Seymeria macrophylla Nutt., L. Eilers, 08-1980; = Dasistoma macrophylla (Nutt.) Raf., D.R. 08-1993. See Scrophulariaceae in Eilers & Roosa [1994]. | 2333 |
| Orobanchaceae | Gerardia tenuifolia Vahl | . | Dickinson. | A florula of a drying pool in a former cornfield at the north margin of Tricorner Pond. SW1/4 sec. 35 | T99N_R37W_Sec35 | . | Anderson, B. , J. Drum, A. Havick and P. Sandridge | . | . | 1961 | collection date: Aug 3 and 7, 1961. See Agalinis tenuifolia (Vahl) Raf. var. tenuifolia. Scrophulariaceae in Eilers & Roosa [1994]. | 5570 |
| Orobanchaceae | Gerardia tenuifolia Vahl | . | Dickinson. | South of Miller's Bay Hotel, West Lake Okoboji | . | Swamp | Shimek, Bohumil | . | 8/11/1909 | 1909 | Orig. i.d.: Gerardia tenuifolia Vahl [See Agalinis tenuifolia (Vahl) Raf. ]. See Scrophulariaceae in Eilers & Roosa [1994]. | 4208 |
| Orobanchaceae | Orobanche uniflora L. | . | Dickinson. | West shore of Miller's Bay, West Lake Okoboji | . | . | Cavanagh, Lucy M . | . | 6/2/1910 | 1910 | Iowa Nat. Areas Inventory Jeanne N. Bates 1983-08-06 | 1196 |
| Orobanchaceae | Pedicularis canadensis L. | . | Dickinson. | Manhattan Pond. Sec. 14. | T99N_R37W_Sec14 | Low wet prairie. Co lemon yellow | Grant, Martin L. | 12960 | 5/14/1955 | 1955 | See Scrophulariaceae in Eilers & Roosa [1994]. | 3895 |
| Orobanchaceae | Pedicularis canadensis L. | . | Dickinson. | Northwest of Miller's Bay, West Lake Okoboji | . | Prairie | Shimek, Bohumil | . | 8/12/1910 | 1910 | See Scrophulariaceae in Eilers & Roosa [1994]. | 1174 |
| Orobanchaceae | Pedicularis canadensis L. | . | Dickinson. | Southwest of Miller's Bay, West Lake Okoboji | . | Prairie | Cavanagh, Lucy M . | . | 5/20/1910 | 1910 | See Scrophulariaceae in Eilers & Roosa [1994]. | 1175 |
| Orobanchaceae | Pedicularis canadensis L. | . | Iowa. | Dutch Lake | . | Sandy opening | Shimek, Bohumil | . | 5/24/1919 | 1919 | See Scrophulariaceae in Eilers & Roosa [1994]. | 2335 |
| Orobanchaceae | Pedicularis canadensis L. | . | Iowa. | South of Amana | . | Alluvial prairie | Shimek, Bohumil | . | 5/20/1922 | 1922 | See Scrophulariaceae in Eilers & Roosa [1994]. | 2336 |
| Orobanchaceae | Pedicularis canadensis L. | ssp. canadensis | Pocahontas. | Kalsow Prairie | . | Prairie | Grant, Martin L. | 12373 | 7/28/1954 | 1954 | See Scrophulariaceae in Eilers & Roosa [1994]. | 2538 |
| Orobanchaceae | Pedicularis lanceolata Michx. | . | Dickinson. | . | T100N_R38W_Sec32 | Wet ground | Shook, A. D. & E. O. Beal | 92 | 8/11/1950 | 1950 | See Scrophulariaceae in Eilers & Roosa [1994]. | 1178 |
| Orobanchaceae | Pedicularis lanceolata Michx. | . | Dickinson. | Between Pleasant Lake and Lily Lake. | . | . | Conard, H. S. | . | 8/14/1923 | 1923 | See Scrophulariaceae in Eilers & Roosa [1994]. | 1176 |
| Orobanchaceae | Pedicularis lanceolata Michx. | . | Dickinson. | East of Lower Gar Lake. Sec. 32, SE1/4. | T99N_R36W_Sec32 | Hanging bog | Thorne, Robert F. | . | 8/15/1957 | 1957 | See Scrophulariaceae in Eilers & Roosa [1994]. | 4435 |
| Orobanchaceae | Pedicularis lanceolata Michx. | . | Dickinson. | Floete Prairie | . | Dry prairie hillside | Zylstra, Connie | . | 8/15/1958 | 1958 | See Scrophulariaceae in Eilers & Roosa [1994]. | 4217 |
| Orobanchaceae | Pedicularis lanceolata Michx. | . | Dickinson. | Lake Okoboji | . | Bog | Grant, Martin L. | 8241 | 8/23/1938 | 1938 | See Scrophulariaceae in Eilers & Roosa [1994]. | 2565 |
| Orobanchaceae | Pedicularis lanceolata Michx. | . | Dickinson. | Silver Lake | . | Hanging bog | Anderson, W. A. | . | 8/21/1934 | 1934 | !, PHM, 1952. See Scrophulariaceae in Eilers & Roosa [1994]. | 4216 |
| Orobanchaceae | Pedicularis lanceolata Michx. | . | Dickinson. | South of Miller's Bay, West Lake Okoboji | . | Low ground | Shimek, Bohumil | . | 8/19/1909 | 1909 | See Scrophulariaceae in Eilers & Roosa [1994]. | 1177 |
| Orobanchaceae | Pedicularis lanceolata Michx. | . | Dickinson. | South of old mail box | T99N_R37W_Sec26 | Low ground | Shimek, Bohumil | . | 8/11/1922 | 1922 | See Scrophulariaceae in Eilers & Roosa [1994]. | 1795 |
| Orobanchaceae | Pedicularis lanceolata Michx. | . | Emmet. | . | . | . | Cratty, R.I. | . | 08/24/1889 | 1889 | !, PHM, 1952. See Scrophulariaceae in Eilers & Roosa [1994]. | 4218 |
| Oxalidaceae | Oxalis dillenii Jacq. | . | Dickinson. | Iowa Lakeside Laboratory | . | Lawn. Fls yellow | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/14/1973 | 1973 | Orig. i.d.: Oxalis stricta L. Annot.: O. dillenii Jacq., L. Eilers, 1980 | 5133 |
| Oxalidaceae | Oxalis dillenii Jacq. | . | Dickinson. | Lakeside Laboratory, Milford | . | Lawn southwest of mess hall. | Conard, H. S. | . | 6/24/1946 | 1946 | Orig. i.d.: Oxalis stricta L. var. piletocarpa Wieg. Annot.: O. dillenii Jacq., L. Eilers, 1980 | 3754 |
| Oxalidaceae | Oxalis dillenii Jacq. | . | Dickinson. | Lakeside Laboratory, campus | . | . | Conard, H. S. | . | 7/4/1923 | 1923 | Orig. i.d.: Oxalis stricta L. Annot.: O. stricta L. var. piletocarpa Wieg., Martin L. Grant, 1949; O. dillenii Jacq., L. Eilers, 1980 | 859 |
| Oxalidaceae | Oxalis dillenii Jacq. | . | Dickinson. | SW of Miller's Bay Hotel, West Okoboji Lake. Sec. 23, SW1/4. | T99N_R37W_Sec23 | Upland prairie | Shimek, Bohumil | . | 6/21/1912 | 1912 | Orig. i.d.: Oxalis sp. Annot.: O. stricta L., Martin L. Grant, 1960; O. dillenii Jacq., L. Eilers, 1980 | 1695 |
| Oxalidaceae | Oxalis europaea Jord. | . | Dickinson. | Plants of 3 representative areas on the east shore of West Okoboji Lake. | T99N_R37W_Sec12 | NW1/4 sec. 12. Edge of open woods. oak woods. | Naffziger, Joyce | 99 | 8/4/1961 | 1961 | Det. by Thorne, 1961. | 5384 |
| Oxalidaceae | Oxalis stricta L. | . | . | Along R.R. east of Iowa City | . | Prairie | Shimek, Bohumil | . | 6/29/1909 | 1909 | Orig. i.d.: Oxalis sp. Annot.: O. europaea E.D. Hubbard, 09-16-1943 [anon.]; O. stricta L., L. Eilers, 08-1980 | 2233 |
| Oxalidaceae | Oxalis stricta L. | . | . | Along R.R.east of Iowa City | . | Prairie | Shimek, Bohumil | . | 6/10/1927 | 1927 | Orig. i.d.: Oxalis sp. Annot.: O. europaea Jord., Robert F. Thorne, 1955; O. stricta L., L. Eilers, 1980 | 2232 |
| Oxalidaceae | Oxalis stricta L. | . | Dickinson. | 2 miles west of Milford, along Little Sioux River | . | Abandoned road in woods | Severe, Doris | 23 | 7/25/1957 | 1957 | Orig. i.d.: Oxalis europaea Jord. Annot.: O. stricta L., L. Eilers, 08-1980 | 3752 |
| Oxalidaceae | Oxalis stricta L. | . | Dickinson. | Cayler Prairie. Sec. 17, SW-NW. | T99N_R37W_Sec17 | . | Grant, Martin L. | 12166 | 6/24/1954 | 1954 | Orig. i.d.: Oxalis europaea Jord. var. europaea Annot.: O. stricta L., L. Eilers, 1980 | 1960 |
| Oxalidaceae | Oxalis stricta L. | . | Dickinson. | Floete Prairie | . | Low wet prairie | Zylstra, Connie | . | 7/30/1958 | 1958 | ? [anon.] | 3755 |
| Oxalidaceae | Oxalis stricta L. | . | Dickinson. | Floete Prairie | . | Low wet prairie | Zylstra, Connie | . | 7/30/1958 | 1958 | Orig. i.d.: Oxalis europaea Jord. Annot.: O. stricta L., L. Eilers, 08-1980 | 3753 |
| Oxalidaceae | Oxalis stricta L. | . | Dickinson. | Hilltop Prairie. Sec. 1, NE-NE. | T99N_R37W_Sec1 | Wet meadow | Grant, Martin L. | 14830 | 7/26/1963 | 1963 | Orig. i.d.: Oxalis europaea Jord. Annot.: O. stricta L., L. Eilers, 08-1980 | 4648 |
| Oxalidaceae | Oxalis stricta L. | . | Dickinson. | Little Sioux . Sec. 10, NE-NW. | T98N_R37W_Sec10 | River bank. Capsules subglabrous | Grant, Martin L. | 11216 | 7/22/1949 | 1949 | Orig. i.d.: Oxalis stricta L. var. piletocarpa Wieg. Annot.: O. europaea Jord., Robert F. Thorne, 1955; OK, MLG, 1960; ! O. stricta L., L. Eilers, 08-1980 | 858 |
| Oxalidaceae | Oxalis stricta L. | . | Dickinson. | Miller's Bay, West Lake Okoboji | . | Woods | Shimek, Bohumil | . | 8/5/1910 | 1910 | Orig. i.d.: Oxalis filipes Small Annot.: O. europaea Jord., Robert F. Thorne, 1955; O. stricta L., L. Eilers, 1980 | 860 |
| Oxalidaceae | Oxalis stricta L. | . | Dickinson. | North of Miller's Bay, West Lake Okoboji | . | Prairie | Cavanagh, Lucy M . | . | 5/18/1910 | 1910 | . | 861 |
| Oxalidaceae | Oxalis stricta L. | . | Dickinson. | Sec. 10, NE1/4. | T98N_R37W_Sec10 | Roadside ditch | Byerly, Dale M. | . | 7/24/1957 | 1957 | Orig. i.d.: Oxalis europaea Jord. Annot.: O. stricta L., L. Eilers, 08-1980 | 3750 |
| Oxalidaceae | Oxalis stricta L. | . | Emmet. | . | . | . | Cratty, R.I. | . | . | . | Orig. i.d.: Oxalis corniculata L. var. stricta (L.) C.C. Huang & L.R. Xu. Annot.: O. europaea [anon.]; O. stricta L., L. Eilers, 1980. [No date of collection given.]. | 3751 |
| Oxalidaceae | Oxalis stricta L. | . | Iowa. | Above Dutch Lake, North of Homestead | . | Sandy bluff | Appel, J.S. | . | 5/25/1950 | 1950 | Annot.: Oxalis europaea [anon.]; O. stricta L., L. Eilers, 1980 | 3749 |
| Oxalidaceae | Oxalis stricta L. | . | Pocahontas. | Kalsow Prairie | . | Prairie. Co yellow | Grant, Martin L. | 12376 | 7/28/1954 | 1954 | Orig. i.d.: Oxalis europaea Jord. var. europaea Annot.: O. stricta L., L. Eilers, 08-1980 | 2511 |
| Oxalidaceae | Oxalis violacea L. | . | . | Along R.R. east of Iowa City | . | Prairie | Shimek, Bohumil | . | 6/2/1920 | 1920 | . | 2234 |
| Oxalidaceae | Oxalis violacea L. | . | Dickinson. | Cayler Prairie. Sec. 17, SW-NW. | T99N_R37W_Sec17 | High prairie. Co rose, turning purple in drying | Grant, Martin L. | 12165 | 6/24/1954 | 1954 | . | 1962 |
| Oxalidaceae | Oxalis violacea L. | . | Dickinson. | R.R. tracks north of Milford. Sec. 6, W. | T99N_R36W_Sec6 | Prairie | Grant, Martin L. | 12134 | 6/21/1954 | 1954 | . | 1961 |
| Oxalidaceae | Oxalis violacea L. | . | Dickinson. | SW of Miller's Bay, West Lake Okoboji | . | Prairie | Cavanagh, Lucy M . | . | 5/20/1910 | 1910 | . | 862 |
| Oxalidaceae | Oxalis violacea L. | . | Iowa. | Area between highway #6 & R.R., west of Homestead | . | Small relict prairie. Fls. purple | Appel, J.S. | 38 | 5/25/1950 | 1950 | . | 3756 |
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