| 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 |
| Ranunculaceae | Actaea pachypoda Ell. | . | Washington. | 4 miles east of Rubio. Clay twnshp. | . | Rich woods | Wagenknecht, B. L. | 642 | 7/10/1953 | 1953 | Orig. i.d.: Actaea alba (L.) Mill. Annot.: A. pachypoda Ell. [anon.] | 4722 |
| Ranunculaceae | Actaea rubra (Ait.) Willd. | . | 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. | 14507 | 8/3/1954 | 1954 | . | 4518 |
| Ranunculaceae | Actaea rubra (Ait.) Willd. | . | Dickinson. | 2 miles west of Milford, along Little Sioux River. | . | Upland woods. At least 10 of these white-fruited forms were found in Milford Woods. | Severe, Doris | 26 | 7/25/1957 | 1957 | . | 4085 |
| Ranunculaceae | Actaea rubra (Ait.) Willd. | . | Dickinson. | 2 miles west of Milford, along Little Sioux River. | . | West-facing slope in woods. | Severe, Doris | 32 | 7/25/1957 | 1957 | . | 4986 |
| Ranunculaceae | Actaea rubra (Ait.) Willd. | . | Dickinson. | Iowa Lakeside Laboratory | . | Acer negundo-Quercus macrocarpa woodland understory. Berries white, 15 cm. of stem removed | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/15/1973 | 1973 | Orig. i.d.: Actaea pachypoda Ell. Annot.: A. rubra (Ait.) Willd., L.J.E., 1979 | 5148 |
| Ranunculaceae | Actaea rubra (Ait.) Willd. | . | Dickinson. | Iowa Lakeside Laboratory | . | Acer negundo-Quercus macrocarpa woodland. Berries red | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/12/1973 | 1973 | . | 5145 |
| Ranunculaceae | Actaea rubra (Ait.) Willd. | . | Dickinson. | Near Gull Point, west side of West Okoboji Lake. | . | Woods | Shimek, Bohumil | . | 8/7/1916 | 1916 | . | 4088 |
| Ranunculaceae | Actaea rubra (Ait.) Willd. | . | Dickinson. | Swan Lake. Sec. 23, SW-SW. | T100N_R35W_Sec23 | Oak woods. Frt. scarlet, ellipsoid | Grant, Martin L. | 11186 | 7/14/1949 | 1949 | . | 625 |
| Ranunculaceae | Actaea rubra (Ait.) Willd. | . | Dickinson. | West side of Little Sioux River. 3 1/2 mi. north of west from Milford. Sec. 4, NW 1/4-NW 1/4. | T98N_R37W_Sec4 | Wooded bluff | Shimek, Bohumil | . | 7/1/1918 | 1918 | . | 4087 |
| Ranunculaceae | Actaea rubra (Ait.) Willd. | . | Emmet. | . | . | . | Cratty, R.I. | . | 07/02/1881 | 1881 | Orig. i.d.: Actaea spicata var. rubra Ait. Annot.: Actaea rubra (Ait.) Willd. = A. spicata var. rubra Ait. | 4108 |
| Ranunculaceae | Actaea rubra (Ait.) Willd. | f. neglecta (Gillman) Robins. | Dickinson. | Ravine south of Lakeside Lab. campus | . | Oak woods. Fr. white | Grant, Martin L. | 11561 | 7/22/1952 | 1952 | . | 1455 |
| Ranunculaceae | Actaea rubra (Ait.) Willd. | f. neglecta (Gillman) Robins. | Emmet. | High Lake. Sec. 14, NE-NW. | T98N_R33W_Sec14 | Oak-hickory woods. Fruit ellipsoid, white, 10-12-mm. long. | Grant, Martin L. | 11194 | 7/14/1949 | 1949 | . | 624 |
| Ranunculaceae | Anemone canadensis L. | . | Clay. | Kirchner Prairie | . | Adjacent to wetland area. Plants somewhat sparse. | Insko, Mike & Todd Pietig | 7 | 7/22/2002 | 2002 | . | 5685 |
| Ranunculaceae | Anemone canadensis L. | . | Clay. | Kirchner Prairie | . | Prairie east of abandoned road and west of wetland, just north of fence line. some flowering, some in fruit. | Bless, Candy and Aletia Van Brocklin | 9 | 7/12/2002 | 2002 | . | 5674 |
| Ranunculaceae | Anemone canadensis L. | . | Dickinson. | East of canal, south of Miller's Bay, West Okoboji Lake | . | Bur oak opening | Shimek, Bohumil | . | 6/22/1918 | 1918 | . | 1666 |
| Ranunculaceae | Anemone canadensis L. | . | Dickinson. | Floete Prairie | . | Low damp prairie | Zylstra, Connie | . | 7/25/1958 | 1958 | . | 4089 |
| Ranunculaceae | Anemone canadensis L. | . | Dickinson. | Gull Point State Park | . | Thicket | Severe, Doris | 64 | 8/9/1957 | 1957 | . | 4093 |
| Ranunculaceae | Anemone canadensis L. | . | Dickinson. | Iowa Lakeside Laboratory | . | N40. Lake edge | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/23/1973 | 1973 | . | 5131 |
| Ranunculaceae | Anemone canadensis L. | . | Dickinson. | Spirit Lake | . | . | Shimek, Bohumil | . | 08/01/1896 | 1896 | Original i.d.: Anemone canadensis L. = A. pennsylvanica L. | 4090 |
| Ranunculaceae | Anemone canadensis L. | . | Dickinson. | West of Elmcrest | . | Woods | Conard, H. S. | . | 6/25/1923 | 1923 | . | 626 |
| Ranunculaceae | Anemone canadensis L. | . | Emmet. | Anderson Prairie State Preserve. | . | Dry prairie hill slope. | Elliott, Mike, Ben Mullarkey, Leanne Martin | . | . | . | . | 5617 |
| Ranunculaceae | Anemone canadensis L. | . | Emmet. | Anderson Prairie State Preserve. | . | Dry prairie hilltop. | Hayes, Jessica , Jon Crawford, Gina Rutenbeck | . | 7/6/2001 | 2001 | . | 5637 |
| Ranunculaceae | Anemone canadensis L. | . | Emmet. | Anderson Prairie State Preserve. | . | Wet prairie between hills. | Nixon, Jennifer, Heath Reinke, Michaeleen Gerken | . | 7/6/2001 | 2001 | . | 5658 |
| Ranunculaceae | Anemone canadensis L. | . | Emmet. | Near Estherville | . | Prairie | Shimek, Bohumil | . | 8/10/1909 | 1909 | . | 4091 |
| Ranunculaceae | Anemone canadensis L. | . | Mills. | Along R.R. Pacific Junction | . | Alluvial flat | Shimek, Bohumil | . | 5/29/1925 | 1925 | . | 4092 |
| Ranunculaceae | Anemone cylindrica Gray | . | Cerro Gordo. | North side of 17th Str. NE Highlands, Mason City | . | Native prairie | Shimek, Bohumil | . | 7/4/1920 | 1920 | County not listed by collector, but location is distinct. | 2158 |
| Ranunculaceae | Anemone cylindrica Gray | . | Dickinson. | 2 m. NW of Lakeside Lab. | . | Dry prairie | Conard, H. S. | . | 7/2/1923 | 1923 | . | 628 |
| Ranunculaceae | Anemone cylindrica Gray | . | Dickinson. | Along R.R. south of Arnold's Park | . | Prairie | Shimek, Bohumil | . | 7/3/1916 | 1916 | . | 4096 |
| Ranunculaceae | Anemone cylindrica Gray | . | Dickinson. | Artificial clearing, woods at Elm Crest, West Okoboji Lake | . | . | Shimek, Bohumil | . | 7/7/1916 | 1916 | . | 1667 |
| Ranunculaceae | Anemone cylindrica Gray | . | Dickinson. | East of West Lake Okoboji | . | Prairie | Cavanagh, Lucy M . | . | 5/30/1910 | 1910 | . | 627 |
| Ranunculaceae | Anemone cylindrica Gray | . | Dickinson. | Floete Prairie | . | Dry prairie hillside | Zylstra, Connie | . | 8/9/1958 | 1958 | . | 4094 |
| Ranunculaceae | Anemone cylindrica Gray | . | Dickinson. | Floete Prairie | T99N_R37W_Sec26 | Mesic prairie | Knudson, Steve | . | 7/3/1961 | 1961 | . | 5335 |
| Ranunculaceae | Anemone cylindrica Gray | . | Dickinson. | Iowa Lakeside Laboratory | . | N40, prairie | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/26/1973 | 1973 | . | 5113 |
| Ranunculaceae | Anemone cylindrica Gray | . | Dickinson. | Montgomery. Sec. 28, NW-NW. | T100N_R36W_Sec28 | Prairie | Grant, Martin L. | 8739 | 7/1/1948 | 1948 | . | 629 |
| Ranunculaceae | Anemone cylindrica Gray | . | Dickinson. | SW of Miller's Bay, West Okoboji Lake. Sec. 26, NW 1/4. | T99N_R37W_Sec26 | Dry prairie | Shimek, Bohumil | . | 8/11/1916 | 1916 | . | 4095 |
| Ranunculaceae | Anemone cylindrica Gray | . | Emmet. | Anderson Prairie State Preserve. | . | Dry prairie hill slope. | Elliott, Mike, Ben Mullarkey, Leanne Martin | . | . | . | . | 5629 |
| Ranunculaceae | Anemone cylindrica Gray | . | Emmet. | Anderson Prairie State Preserve. | . | Dry prairie hilltop. | Hayes, Jessica , Jon Crawford, Gina Rutenbeck | . | 7/6/2001 | 2001 | . | 5643 |
| Ranunculaceae | Anemone cylindrica Gray | . | Johnson. | Black's Spring | . | Prairie opening | Shimek, Bohumil | . | 7/20/1911 | 1911 | . | 2159 |
| Ranunculaceae | Anemone cylindrica Gray | . | Palo Alto. | Along R.R. north of Emmetsburg | . | Prairie | Shimek, Bohumil | . | 6/18/1921 | 1921 | . | 4097 |
| Ranunculaceae | Anemone patens L. | var. wolfgangiana (Besser) Koch | Dickinson. | Cayler Prairie. Lakeville twnshp. Sec. 17, NW 1/4. | . | . | Bovbjerg, Richard & Robert F. Thorne | 17537 | 5/19/1956 | 1956 | Annot.: = Pulsatilla patens (L.) P. Miller var. multifida Pritz, D.R., 08-1993 | 4621 |
| Ranunculaceae | Anemone patens L. | var. wolfgangiana (Besser) Koch | Dickinson. | Cayler Prairie. Lakeville twnshp. Sec. 17, NW 1/4. | . | Dry prairie, common. | Thorne, Robert F. | 15972 | 6/17/1955 | 1955 | Annot.: = Pulsatilla patens (L.) P. Miller var. multifida Pritz, D.R., 08-1993 | 4400 |
| Ranunculaceae | Anemone patens L. | var. wolfgangiana (Besser) Koch | Dickinson. | Cayler Prairie | T99N_R37W_Sec17 | High Prairie | Grant, Martin L. | 12964 | 5/14/1955 | 1955 | Annot.: = Pulsatilla patens (L.) P. Miller var. multifida Pritz, D.R., 08-1993 | 3898 |
| Ranunculaceae | Anemone patens L. | var. wolfgangiana (Besser) Koch | Dickinson. | East of the Little Sioux River, NW of Milford. Sec. 33, SW1/4. | T99N_R37W_Sec33 | Prairie-steppe, dry gravelly ridge at sunken Kettlehole. | Shimek, Bohumil | . | 5/4/1930 | 1930 | Annot.: = Pulsatilla patens (L.) P. Miller var. multifida Pritz, D.R., 08-1993 | 4100 |
| Ranunculaceae | Anemone patens L. | var. wolfgangiana (Besser) Koch | Dickinson. | Near Silver Lake | . | Pasture | Aitken, W.W. | . | 4/27/1939 | 1939 | Annot.: = Pulsatilla patens (L.) P. Miller var. multifida Pritz, D.R., 08-1993 | 4099 |
| Ranunculaceae | Anemone patens L. | var. wolfgangiana (Besser) Koch | Dickinson. | North of Miller's Bay, West Okoboji Lake. | . | Gravelly hills | Shimek, Bohumil | . | 4/14/1911 | 1911 | Annot.: = Pulsatilla patens (L.) P. Miller var. multifida Pritz, D.R., 08-1993 | 1668 |
| Ranunculaceae | Anemone patens L. | var. wolfgangiana (Besser) Koch | Dickinson. | SW of Miller's Bay, West Lake Okoboji | . | Prairie. Fruit [On the same sheet is a specimen with the same name, in flower, collected by B. Shimek at High Point, W. Okoboji Lake, dated 04-14-1911] | Cavanagh, Lucy M . | . | 5/20/1910 | 1910 | Annot.: = Pulsatilla patens (L.) P. Miller var. multifida Pritz, D.R., 08-1993 | 630 |
| Ranunculaceae | Anemone patens L. | var. wolfgangiana (Besser) Koch | Emmet. | Near Estherville | . | Prairie | Shimek, Bohumil | . | 8/10/1909 | 1909 | Annot.: = Pulsatilla patens (L.) P. Miller var. multifida Pritz, D.R., 08-1993 | 4101 |
| Ranunculaceae | Anemone patens L. | var. wolfgangiana (Besser) Koch | Fayette. | Fayette | . | Cedar barren | Bass, L. | . | 4/19/1942 | 1942 | Annot.: = Pulsatilla patens (L.) P. Miller var. multifida Pritz, D.R., 08-1993 | 2427 |
| Ranunculaceae | Anemone patens L. | var. wolfgangiana (Besser) Koch | Monona. | SW of Grant Center | . | Loess on detached ridge | Shimek, Bohumil | . | 6/18/1910 | 1910 | Annot.: = Pulsatilla patens (L.) P. Miller var. multifida Pritz, D.R., 08-1993 | 4098 |
| Ranunculaceae | Anemone quinquefolia L. | . | Muscatine. | NW of Bayfield | . | Wooded sandy banks | Shimek, Bohumil | . | 5/8/1909 | 1909 | . | 2160 |
| Ranunculaceae | Anemone virginiana L. | . | Cerro Gordo. | SW side of Buffalo Slough, Mason City | . | Wooded bluffs | Shimek, Bohumil | . | 7/4/1920 | 1920 | County not listed by collector, but location is distinct. | 2161 |
| Ranunculaceae | Anemone virginiana L. | . | Clayton. | Pike's Peak, McGregor | . | Upland woods | Shimek, Bohumil | . | 8/8/1921 | 1921 | . | 4103 |
| Ranunculaceae | Anemone virginiana L. | . | Dickinson. | 2 miles west of Milford, along Little Sioux River. | . | Upland woods | Severe, Doris | 4 | 7/18/1957 | 1957 | . | 4102 |
| Ranunculaceae | Anemone virginiana L. | . | Dickinson. | East shore of West Okoboji Lake | T99N_R36W_Sec30 | Dense woods, Basswood woods | Naffziger, Joyce | 79 | 8/11/1961 | 1961 | Annot: R.F. Thorne, 1961 | 5337 |
| Ranunculaceae | Anemone virginiana L. | . | Dickinson. | Iowa Lakeside Laboratory | . | Wood understory in Acer negundo-Quercus macrocarpa woodland. Basal leaves present, same as cauline, height 1.2m. | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/18/1973 | 1973 | Annot.: = A. virginiana L. [anon.] | 5134 |
| Ranunculaceae | Anemone virginiana L. | . | Dickinson. | Woods back of Gull Point | . | . | Conard, H. S. | . | 7/5/1923 | 1923 | . | 631 |
| Ranunculaceae | Anemone virginiana L. | . | Iowa. | NE of Homestead | . | Upland woods | Shimek, Bohumil | . | 7/2/1920 | 1920 | Orig. i.d.: Anemone canadensis L. Annot.: A. virginiana L., Robert F. Thorne, 1955 | 2157 |
| Ranunculaceae | Anemone virginiana L. | . | Muscatine. | East of pond, 8 mi. NW of Muscatine | . | Wooded old dune | Shimek, Bohumil | . | 8/22/1926 | 1926 | County not listed by collector, but location is distinct. | 4104 |
| Ranunculaceae | Aquilegia canadensis L. | . | Delaware. | North of Earlville | . | Rocky, wooded banks | Shimek, Bohumil | . | 7/13/1913 | 1913 | . | 2162 |
| Ranunculaceae | Aquilegia canadensis L. | . | Dickinson. | 2 miles west of Milford, along Little Sioux River. | . | Upland woods | Severe, Doris | 28 | 7/25/1957 | 1957 | . | 4105 |
| Ranunculaceae | Aquilegia canadensis L. | . | Dickinson. | East shore of West Okoboji Lake | T99N_R37W_Sec12 | Open woods, Oak woods. | Naffziger, Joyce | 23 | 8/4/1961 | 1961 | . | 5339 |
| Ranunculaceae | Aquilegia canadensis L. | . | Dickinson. | Lakeside Lab. campus | . | . | Conard, H. S. | . | 7/4/1923 | 1923 | . | 633 |
| Ranunculaceae | Aquilegia canadensis L. | . | Dickinson. | Near south shore of Miller's Bay, West Lake Okoboji | . | Rocky bank, open woods | Cavanagh, Lucy M . | . | 5/27/1910 | 1910 | . | 632 |
| Ranunculaceae | Caltha palustris L. | . | Dickinson. | . | T98N_R37W_Sec4 | Moist ground | Shook, A. D. & E. O. Beal | 59 | 8/4/1950 | 1950 | . | 635 |
| Ranunculaceae | Caltha palustris L. | . | Dickinson. | 3 m SW of Lakeside Lab. | . | Hanging bog | Conard, H. S. | . | 7/17/1923 | 1923 | . | 634 |
| Ranunculaceae | Caltha palustris L. | . | Dickinson. | Near Little Sioux River, west of Milford. | . | Hanging bog | Anderson, W. A. | . | 6/22/1935 | 1935 | . | 636 |
| Ranunculaceae | Caltha palustris L. | . | Johnson. | Along RR. SE 1/4 of sec. 19. Scott twnshp. | T79N_R5W_Sec19 | Prairie remnant | Thorne, Robert F. | 10592 | 5/25/1952 | 1952 | . | 4461 |
| Ranunculaceae | Caltha palustris L. | . | Muscatine. | NW of Bayfield | . | Bog | Shimek, Bohumil | . | 5/8/1920 | 1920 | . | 2163 |
| Ranunculaceae | Clematis X jackmanii T. Moore | . | Dickinson. | Milford | . | Yard | Rute, John E. | . | . | 1958 | [Date given as: summer, 1958]. Hybrid of lanuginosa X viticella [see PLANTS database]. | 4107 |
| Ranunculaceae | Clematis occidentalis (Hornem) DC. | . | Dubuque. | White Pine Hollow State Forest, 3 miles NW of Luxemburg. Liberty twnshp. Sec. 6,7,8. | . | Climbing vine over shrubs on outcrops of north facing bluff. | Thorne, Robert F. | 14038 | 5/15/1954 | 1954 | Orig. i.d.: Clematis verticillaris DC. Annot.: Iowa Nat. Areas Inventory, W.R., 1983-08-06; = C. occidentalis [?] (Hornem) DC. L.J.E. 1986 | 4604 |
| Ranunculaceae | Clematis virginiana L. | . | Dickinson. | Manhattan Beach, West Lake Okoboji | . | Open woods | Shimek, Bohumil | . | 8/11/1910 | 1910 | . | 638 |
| Ranunculaceae | Clematis virginiana L. | . | Dickinson. | Milford Woods. Sec. 10, SE-NW. | T98N_R37W_Sec10 | Bur oak forest. Vine, 10' long | Grant, Martin L. | 14018 | 8/3/1959 | 1959 | . | 3981 |
| Ranunculaceae | Clematis virginiana L. | . | Dickinson. | Spirit Lake | . | Forest, Oak | Grant, Martin L. | 8330 | 8/25/1938 | 1938 | . | 1729 |
| Ranunculaceae | Clematis virginiana L. | . | Lyon. | Gitchie Manitou State Park. Sec. 11, SW. | T100N_R49W_Sec11 | Climbing over thicket by river | Thorne, Robert F. | 14637 | 8/12/1954 | 1954 | . | 4532 |
| Ranunculaceae | Clematis virginiana L. | . | Lyon. | Gitchie Manitou | . | Brush prairie. Co. white | Grant, Martin L. | 11266 | 8/8/1949 | 1949 | . | 637 |
| Ranunculaceae | Delphinium tricorne Michx. | . | Carroll. | Along road west of Carroll | . | Prairie | Shimek, Bohumil | . | 5/27/1922 | 1922 | Iowa Nat. Areas Inventory, W.P.,1983-08-06 | 4723 |
| Ranunculaceae | Delphinium tricorne Michx. | . | Van Buren. | Along R.R. east of Willett | . | On road ballast | Shimek, Bohumil | . | 5/14/1921 | 1921 | Iowa Nat. Areas Inventory, W.P., 1983-08-06 | 2164 |
| Ranunculaceae | Delphinium virescens Nutt. | . | Dickinson. | Cayler Prairie. Lakeville twnshp. Sec. 17, NW 1/4. | . | Dry to moist prairie, common | Thorne, Robert F. | 16008 | 6/17/1955 | 1955 | . | 4401 |
| Ranunculaceae | Delphinium virescens Nutt. | . | Dickinson. | East of West Lake Okoboji | . | Prairie | Cavanagh, Lucy M . | . | 5/30/1910 | 1910 | Orig. i.d.: Delphinium penardi Huth. Annot.: D. virescens Nutt., LJE, 1979. [See Delphinium carolinianum subsp. virescens (Nutt.) R.E.Brooks in Plants Database & The Plant List (www.theplantlist.org)]. | 641 |
| Ranunculaceae | Delphinium virescens Nutt. | . | Dickinson. | Montgomery. Sec. 28, NW-NW. | T100N_R36W_Sec28 | Prairie | Grant, Martin L. | 8740 | 7/1/1948 | 1948 | Orig. i.d.: Delphinium penardi Huth. Annot.: D. virescens Nutt., LJE, 1979. [See Delphinium carolinianum subsp. virescens (Nutt.) R.E.Brooks in Plants Database & The Plant List (www.theplantlist.org)]. | 639 |
| Ranunculaceae | Delphinium virescens Nutt. | . | Dickinson. | Southwest of Miller's Bay, West Okoboji Lake. Sec. 23, SW1/4. | T99N_R37W_Sec23 | Prairie | Shimek, Bohumil | . | 6/27/1918 | 1918 | Orig. i.d.: Delphinium penardi Huth. Annot.: D. virescens Nutt., LJE, 1979. [See Delphinium carolinianum subsp. virescens (Nutt.) R.E.Brooks in Plants Database & The Plant List (www.theplantlist.org)]. | 1669 |
| Ranunculaceae | Delphinium virescens Nutt. | . | Dickinson. | West Okoboji | . | Prairie | Shimek, Bohumil | . | 7/11/1912 | 1912 | Orig. i.d.: Delphinium penardi Huth. Annot.: D. virescens Nutt., LJE, 1979. [See Delphinium carolinianum subsp. virescens (Nutt.) R.E.Brooks in Plants Database & The Plant List (www.theplantlist.org)]. | 640 |
| Ranunculaceae | Delphinium virescens Nutt. | . | Dickinson. | West of Elmcrest | . | Woods | Conard, H. S. | . | 6/25/1923 | 1923 | Orig. i.d.: Delphinium penardi Huth. Annot.: D. virescens Nutt., LJE, 1979. [See Delphinium carolinianum subsp. virescens (Nutt.) R.E.Brooks in Plants Database & The Plant List (www.theplantlist.org)]. | 642 |
| Ranunculaceae | Delphinium virescens Nutt. | . | Emmet. | Anderson Prairie State Preserve. | . | Dry prairie hill slope. | Elliott, Mike, Ben Mullarkey, Leanne Martin | . | . | . | . | 5623 |
| Ranunculaceae | Delphinium virescens Nutt. | . | Emmet. | Anderson Prairie State Preserve. | . | Wet prairie between hills. | Nixon, Jennifer, Heath Reinke, Michaeleen Gerken | . | 7/6/2001 | 2001 | . | 5613 |
| Ranunculaceae | Hepatica nobilis P.Mill. | var. acuta (Pursh.) Steyerm. | Clay. | Wanata Park | . | Red oak woods | Grant, Martin L. | 12411 | 8/3/1954 | 1954 | Orig. i.d.: Hepatica acutiloba DC. Annot.: = H. nobilis P.Mill. v. acuta (Pursh.) Steyerm., D.R., 08-1993. See Anemone hepatica var. acuta (Pursh) Pritz. in The Plant List (www.theplantlist.org). | 2500 |
| Ranunculaceae | Hepatica nobilis P.Mill. | var. acuta (Pursh.) Steyerm. | 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. | 14508 | 8/3/1954 | 1954 | Orig. i.d.: Hepatica acutiloba DC. Annot.: = H. nobilis P.Mill. v. acuta (Pursh.) Steyerm., D.R., 08-1993. See Anemone hepatica var. acuta (Pursh) Pritz. in The Plant List (www.theplantlist.org). | 4519 |
| Ranunculaceae | Hepatica nobilis P.Mill. | var. acuta (Pursh.) Steyerm. | Johnson. | Above Turkey Creek. Newport twnshp. Sec. 23, NW 1/4. | . | Upland woods and north-facing bluff | Thorne, Robert F. | 14011 | 5/13/1954 | 1954 | Orig. i.d.: Hepatica acutiloba DC. Annot.: = H. nobilis P.Mill. v. acuta (Pursh.) Steyerm., D.R., 08-1993. See Anemone hepatica var. acuta (Pursh) Pritz. in The Plant List (www.theplantlist.org). | 4462 |
| Ranunculaceae | Paeonia officinalis L. | . | Woodbury. | Southeast Sioux City | . | Cultivated | Juhl, Karen | . | 6/30/1957 | 1957 | . | 4109 |
| Ranunculaceae | Ranunculus abortivus L. | . | Dickinson. | . | T99N_R36W_Sec31 | Woodland | Severe, Doris | 57 | 8/4/1957 | 1957 | . | 4110 |
| Ranunculaceae | Ranunculus abortivus L. | . | Dickinson. | Omaha Beach, West Lake Okoboji. Sec. 18, SW-SW. | T99N_R36W_Sec18 | Tilia-Acer forest | Grant, Martin L. | 14343 | 7/1/1960 | 1960 | . | 4023 |
| Ranunculaceae | Ranunculus abortivus L. | . | Dickinson. | South shore of Miller's Bay, West Lake Okoboji | . | Open woods | Cavanagh, Lucy M . | . | 5/27/1910 | 1910 | . | 650 |
| Ranunculaceae | Ranunculus abortivus L. | . | Harrison. | Missouri Valley | . | . | Shimek, Bohumil | . | 5/18/1903 | 1903 | Orig. i.d.: Ranunculus sp. Annot.: R. abortivus [anon.] | 2165 |
| Ranunculaceae | Ranunculus abortivus L. | . | Johnson. | Above Turkey Creek. Newport twnshp. Sec. 23, NW 1/4. | . | Upland woods and north-facing bluff. | Thorne, Robert F. | 13985 | 5/13/1954 | 1954 | . | 4463 |
| Ranunculaceae | Ranunculus cymbalaria Pursh | . | Clay. | Big Meadow Creek | T100N_R36W_ Sec.14&23 | Exposed mud flats | Begres, F.M. | . | 6/20/1968 | 1968 | . | 4803 |
| Ranunculaceae | Ranunculus cymbalaria Pursh | . | Dickinson. | . | T99N_R37W_Sec8 | Edge of river | Shook, A. D. & E. O. Beal | 30 | 7/27/1950 | 1950 | . | 652 |
| Ranunculaceae | Ranunculus cymbalaria Pursh | . | Dickinson. | Along canal | . | . | Conard, H. S. | . | 6/23/1923 | 1923 | Annot.: f. hebecaulis Fern., Martin L. Grant, 1952 | 656 |
| Ranunculaceae | Ranunculus cymbalaria Pursh | . | Dickinson. | Milford Woods | . | . | Takehara, Kenneth N. | 6 | 7/22/1949 | 1949 | Annot.: f. hebecaulis Fern., Martin L. Grant, 1952 | 654 |
| Ranunculaceae | Ranunculus cymbalaria Pursh | . | Dickinson. | Near Silver Lake | T100N_R38W_Sec23 | Marsh | Hoffman, Larry | . | 8/11/1957 | 1957 | . | 4111 |
| Ranunculaceae | Ranunculus cymbalaria Pursh | . | Dickinson. | Okoboji Station | . | Muddy beaches | Shimek, Bohumil | . | 8/1/1901 | 1901 | Annot.: f. hebecaulis Fern., Martin L. Grant, 1952 | 655 |
| Ranunculaceae | Ranunculus cymbalaria Pursh | . | Dickinson. | Silver Lake Fen, W end of Silver Lake. Silver Lake twnshp. Sec. 32, NW 1/4. | . | . | Thorne, Robert F. | 17758 | 6/21/1956 | 1956 | . | 4402 |
| Ranunculaceae | Ranunculus cymbalaria Pursh | f. hebecaulis Fern. | Dickinson. | Stony Lake | T99N_R38W_Sec28 | Upland lake shore | Grant, Martin L. | 8844 | 7/26/1948 | 1948 | . | 653 |
| Ranunculaceae | Ranunculus cymbalaria Pursh | f. hebecaulis Fern. | Osceola. | NE corner Rush Lake | . | Sandy shore. Co yellow | Grant, Martin L. | 12221 | 6/26/1954 | 1954 | . | 1925 |
| Ranunculaceae | Ranunculus fascicularis Muhl. | . | Johnson. | Above Turkey Creek. Newport twnshp. Sec. 23, NW 1/4. | . | Upland woods and north-facing bluff. | Thorne, Robert F. | 13978 | 5/13/1954 | 1954 | . | 4464 |
| Ranunculaceae | Ranunculus flabellaris Raf. | . | Dickinson. | Sec.c 2, NW 1/4 of NE 1/4 | T99N_R37W_Sec2 | Pond at marshy slough. Leaves submersed, flowers emersed. | Hoffman, Larry | . | 8/1/1957 | 1957 | . | 4112 |
| Ranunculaceae | Ranunculus flabellaris Raf. | . | Dickinson. | Southeast of Miller's Bay, West Lake Okoboji | . | Swamp | Cavanagh, Lucy M . | . | 5/27/1910 | 1910 | Orig. i.d.: Ranunculus delphinifolius Torr. Annot.: R. flabellaris Raf. f. riparius Fern., Martin L. Grant, 1952 | 657 |
| Ranunculaceae | Ranunculus flabellaris Raf. | . | Palo Alto. | Along R.R. north of Emmetsburg | . | Low ground. | Shimek, Bohumil | . | 5/22/1920 | 1920 | Orig. i.d.: Ranunculus delphinifolius Torr. Annot.: R. flabellaris Raf.[anon.] | 1672 |
| Ranunculaceae | Ranunculus flabellaris Raf. | f. flabellaris | Dickinson. | Prairie Slough. Sec. 23, NE-SE. | T99N_R36W_Sec23 | In 1 in. water | Grant, Martin L. | 12274 | 7/6/1954 | 1954 | . | 1926 |
| Ranunculaceae | Ranunculus flabellaris Raf. | forma riparius Fern. | Dickinson. | Sec. 30 [?] | T100N_R36W_Sec30 | Moist ground near marsh | Shook, A. D. & E. O. Beal | 12 | 7/24/1950 | 1950 | Annot.: R. gmelini DC. var. hookeri (D.Don) Benson, Martin L. Grant, 1952; Iowa Nat. Areas Inventory, W.P.,1983-08-06; !, -petals ,8mm., -achene margin not thickened as per G.P.F., D.R., 08-1993. | 658 |
| Ranunculaceae | Ranunculus longirostris Godr. | . | Dickinson. | . | T100N_R36W_Sec31 | Wet ground | Shook, A. D. & E. O. Beal | 24 | 7/24/1950 | 1950 | Orig. i.d.: Ranunculus aquatilis L. var. capillaceus (Thuill.) DC. Annot.: R. longirostris Godr., Martin L. Grant, 1952 | 651 |
| Ranunculaceae | Ranunculus longirostris Godr. | . | Dickinson. | Garlock Slough, south end | T99N_R37W_Sec35 | Shallow water | Begres, F. M. | . | 6/10/1968 | 1968 | . | 5333 |
| Ranunculaceae | Ranunculus longirostris Godr. | . | Dickinson. | In front of Lakeside Lab. | . | . | Conard, H. S. | . | 7/2/1923 | 1923 | Orig. i.d.: Ranunculus circinatus Sibth. Annot.: R. longirostris Godr., Martin L. Grant, 1948, Nutlets ca 16, 1 mm., wrinkled; beak 1/3 mm. or less, rarely 2/3 mm.[MLG] | 664 |
| Ranunculaceae | Ranunculus longirostris Godr. | . | Dickinson. | Iowa Lakeside Laboratory, Little Miller's Bay | . | Aquatic. Fls white | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/16/1973 | 1973 | Orig. i.d.: Ranunculus trichophyllus Chaix. Annot.: R. longirostris Godr., L. Eilers, 1979 | 5132 |
| Ranunculaceae | Ranunculus longirostris Godr. | . | Dickinson. | Lakeside Laboratory. Sec. 23, SE-NW. | T99N_R37W_Sec23 | Lake margin, in 6 in.-3' water. Co white | Grant, Martin L. | 8688 | 6/21/1948 | 1948 | . | 660 |
| Ranunculaceae | Ranunculus longirostris Godr. | . | Dickinson. | Little Miller's Bay, West Okoboji Lake, near Lakeside Laboratory dock. | . | . | Hoffman, Larry | . | 7/30/1957 | 1957 | . | 4113 |
| Ranunculaceae | Ranunculus longirostris Godr. | . | Dickinson. | Little Miller's Bay | . | Shallow to 5' of water | Shook, A. D. & E. O. Beal | 37 | 7/18/1950 | 1950 | . | 659 |
| Ranunculaceae | Ranunculus longirostris Godr. | . | Dickinson. | Miller's Bay, West Lake Okoboji | . | . | Shimek, Bohumil | . | 8/29/1916 | 1916 | Orig. i.d.: Ranunculus circinatus Sibth. Annot.: R. longirostris Godr. [anon.] | 1671 |
| Ranunculaceae | Ranunculus longirostris Godr. | . | Dickinson. | Miller's Bay, West Lake Okoboji | . | In bay | Shimek, Bohumil | . | 8/2/1910 | 1910 | Orig. i.d.: Ranunculus circinatus Sibth. Annot.: R. longirostris Godr., Martin L. Grant, 1948, Nutlets ca 16, 1 mm., wrinkled; beak 1/3 mm. or less, rarely 2/3 mm.[MLG] | 663 |
| Ranunculaceae | Ranunculus longirostris Godr. | . | Dickinson. | Miller's Bay, West Okoboji Lake | . | . | Lohman, M.L. | . | 8/17/1925 | 1925 | Orig. i.d.: Ranunculus circinatus Sibth. Annot.: R. longirostris Godr., Martin L. Grant, 1948, Nutlets ca 16, 1 mm., wrinkled; beak 1/3 mm. or less, rarely 2/3 mm.[MLG] | 661 |
| Ranunculaceae | Ranunculus longirostris Godr. | . | Dickinson. | Miller's Bay | . | Lake | Shimek, Bohumil | . | 8/2/1910 | 1910 | Orig. i.d.: Ranunculus circinatus Sibth. Annot.: R. longirostris Godr., Martin L. Grant, 1948, Nutlets ca 16, 1 mm., wrinkled; beak 1/3 mm. or less, rarely 2/3 mm.[MLG] | 662 |
| Ranunculaceae | Ranunculus longirostris Godr. | . | Dickinson. | North end of West Okoboji Lake | . | Swamp | Shimek, Bohumil | . | 7/1/1912 | 1912 | Orig. i.d.: Ranunculus circinatus Sibth. Annot.: R. longirostris Godr. [anon.] | 1670 |
| Ranunculaceae | Ranunculus pensylvanicus L. f. | . | Dickinson. | . | T99N_R37W_Sec35 | Roots in water | Shook, A. D. & E. O. Beal | 39 | 7/24/1950 | 1950 | . | 665 |
| Ranunculaceae | Ranunculus pensylvanicus L. f. | . | Dickinson. | Back of Elmcrest | . | . | Conard, H. S. | . | 7/9/1923 | 1923 | . | 669 |
| Ranunculaceae | Ranunculus pensylvanicus L. f. | . | Dickinson. | Beck Canal, Elmcrest Peninsula, West Okoboji Lake. Lakeville twnshp. | . | Moist swale | Thorne, Robert F. | 14425 | 7/14/1954 | 1954 | . | 4403 |
| Ranunculaceae | Ranunculus pensylvanicus L. f. | . | Dickinson. | Iowa Lakeside Laboratory | . | Wooded water front understory. Fls. yellow | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/19/1973 | 1973 | . | 5143 |
| Ranunculaceae | Ranunculus pensylvanicus L. f. | . | Dickinson. | Jemmerson Slough | T100N_R36W_Sec31 | Wet ground | Hoffman, Larry | . | 8/8/1957 | 1957 | . | 4114 |
| Ranunculaceae | Ranunculus pensylvanicus L. f. | . | Dickinson. | Marble Lake. Spirit Lake twnshp. | T100N_R36W_Sec17 | Margin of lake | Roosa, Dean M., & R. F. Thorne | 53 | 8/12/1961 | 1961 | . | 5336 |
| Ranunculaceae | Ranunculus pensylvanicus L. f. | . | Dickinson. | Plants of Crossroads Pond | T98N_R37W_Sec3 | Roadside ditch, dewatered | Luchen, Mary Alyce & Robert F. Thorne | 75 | 8/11/1961 | 1961 | . | 4662 |
| Ranunculaceae | Ranunculus pensylvanicus L. f. | . | Dickinson. | Plants of outlet of Lower Gar Lake. | T98N_R36W_Sec5 | Margin. | Shannon, Jerry A. | 30 | 7/30/1961 | 1961 | . | 5530 |
| Ranunculaceae | Ranunculus pensylvanicus L. f. | . | Dickinson. | Robinson Lake. Sec. 18, SE-NE. | T100N_R36W_Sec18 | Sandy lake shore. Herb, 3' high, 2 cm. diam. at base. | Grant, Martin L. | 8849 | 7/26/1948 | 1948 | . | 667 |
| Ranunculaceae | Ranunculus pensylvanicus L. f. | . | Dickinson. | South of Miller's Bay, West Lake Okoboji | . | Swamp | Shimek, Bohumil | . | 8/4/1910 | 1910 | . | 668 |
| Ranunculaceae | Ranunculus pensylvanicus L. f. | . | Dickinson. | Tricorner Pond, a florula of drying pool in a former cornfield an the north margin | T99N_R37W_Sec35 | . | Anderson, B., J. Drum, A. Havick, & P. Sandridge | . | 8/7/1961 | 1961 | . | 5334 |
| Ranunculaceae | Ranunculus pensylvanicus L. f. | . | Dickinson. | Upper Gar Lake | . | Muddy shores | Shimek, Bohumil | . | 8/1/1901 | 1901 | . | 666 |
| Ranunculaceae | Ranunculus pensylvanicus L. f. | . | Dickinson. | West Okoboji | . | Bog near Little Sioux River | Lohman, M.L. | . | 8/13/1925 | 1925 | County not listed by collector, but location is distinct. | 670 |
| Ranunculaceae | Ranunculus recurvatus Poir. | . | Dubuque. | West side of Pine Hollow, Luxemburg | . | Lower wooded rocky slopes | Shimek, Bohumil | . | 5/12/1901 | 1901 | . | 2166 |
| Ranunculaceae | Ranunculus rhomboideus Goldie | . | Dickinson. | Cayler Prairie. Lakeville twnshp. Sec. 17, NW 1/4. | . | Dry prairie, frequent | Thorne, Robert F. | 16101 | 6/26/1955 | 1955 | . | 4404 |
| Ranunculaceae | Ranunculus rhomboideus Goldie | . | Dickinson. | Cayler Prairie. Sec. 17, NW1/4. | T99N_R37W_Sec17 | High prairie | Grant, Martin L. | 14238 | 6/20/1960 | 1960 | . | 4007 |
| Ranunculaceae | Ranunculus rhomboideus Goldie | . | Dickinson. | Cayler Prairie | T99N_R37W_Sec17 | High prairie. Co yellow | Grant, Martin L. | 12973 | 5/14/1955 | 1955 | . | 3904 |
| Ranunculaceae | Ranunculus rhomboideus Goldie | . | Dickinson. | SW of Miller's Bay, West Lake Okoboji | . | Prairie | Cavanagh, Lucy M . | . | 5/20/1910 | 1910 | . | 671 |
| Ranunculaceae | Ranunculus sceleratus L. | . | Dickinson. | . | T98N_R37W_Sec2 | Farm pond S. of Highway 32, shallow water | Begres, F.M. | . | 6/13/1968 | 1968 | . | 4783 |
| Ranunculaceae | Ranunculus sceleratus L. | . | Dickinson. | Along canal | . | . | Conard, H. S. | . | 6/23/1923 | 1923 | . | 674 |
| Ranunculaceae | Ranunculus sceleratus L. | . | Dickinson. | Canal | T99N_R37W_ Sec23&26 | Edge of marsh | Shook, A. D. & E. O. Beal | 19 | 7/21/1950 | 1950 | . | 672 |
| Ranunculaceae | Ranunculus sceleratus L. | . | Dickinson. | Lakeside Laboratory. Sec. 23, SE-NW. | T99N_R37W_Sec23 | Lake margin; sand | Grant, Martin L. | 8687 | 6/21/1948 | 1948 | . | 675 |
| Ranunculaceae | Ranunculus sceleratus L. | . | Dickinson. | North end of Stony Lake | . | Marshy slough | Hoffman, Larry | . | 8/1/1957 | 1957 | . | 4115 |
| Ranunculaceae | Ranunculus sceleratus L. | . | Dickinson. | South of Emerson's Bay | . | Swamp | Shimek, Bohumil | . | 8/9/1910 | 1910 | . | 673 |
| Ranunculaceae | Ranunculus sceleratus L. | . | Dickinson. | Spirit Lake, along NE edge. Sec. 15, SE 1/4. | T100N_R36W_Sec15 | On rocky shoreline | Adams, Doyle D. | . | 7/28/1958 | 1958 | . | 4116 |
| Ranunculaceae | Ranunculus septentrionalis Poir. | . | Dickinson. | Northwest of Miller's Bay | . | Low ground | Shimek, Bohumil | . | 5/1/1912 | 1912 | . | 677 |
| Ranunculaceae | Ranunculus septentrionalis Poir. | . | Dickinson. | SW of Miller's Bay, West Lake Okoboji | . | Prairie | Cavanagh, Lucy M . | . | 5/20/1910 | 1910 | Orig. i.d.: Ranunculus fascicularis Muhl. Annot.: This specimen was not a part of the lot identified as R. fascicularis, B.S. R. septentrionalis Poir. APK; R. sept. var. s., Martin L. Grant, 1959. | 676 |
| Ranunculaceae | Ranunculus septentrionalis Poir. | . | Dickinson. | West of Elmcrest | . | Woods | Conard, H. S. | . | 6/25/1923 | 1923 | . | 678 |
| Ranunculaceae | Ranunculus septentrionalis Poir. | var. caricetorum (Greene) Fernald | Jones. | Along R.R. near Olin | . | On flat prairie | Shimek, Bohumil | . | 5/21/1918 | 1918 | . | 4117 |
| Ranunculaceae | Thalictrum dasycarpum Fisch. & Ave-Lall. | . | Cerro Gordo. | Drained part of Buffalo Slough, Mason City. Sec. 1, SE1/4-NW 1/4 | T96N_R20W_Sec1 | . | Shimek, Bohumil | . | 6/25/1920 | 1920 | T. revolutum DC ? [anon.]. County not listed by collector, but location is distinct. | 4724 |
| Ranunculaceae | Thalictrum dasycarpum Fisch. & Ave-Lall. | . | Cerro Gordo. | North 1/2 of Buffalo Slough, Mason City | . | Swamp | Shimek, Bohumil | . | 7/29/1922 | 1922 | County not listed by collector, but location is distinct. | 2167 |
| Ranunculaceae | Thalictrum dasycarpum Fisch. & Ave-Lall. | . | Dickinson. | 2 miles west of Milford, along Little Sioux River | . | Upland woods | Severe, Doris | 15 | 7/24/1957 | 1957 | . | 4119 |
| Ranunculaceae | Thalictrum dasycarpum Fisch. & Ave-Lall. | . | Dickinson. | Arnold's Park, West Lake Okoboji | . | Border of woods | Shimek, Bohumil | . | 8/9/1910 | 1910 | Lvs. thickish, revolute Achenes 4mm., subsessile[?], not reflexed [anon. MLG ?] | 647 |
| Ranunculaceae | Thalictrum dasycarpum Fisch. & Ave-Lall. | . | Dickinson. | Back of Elmcrest | . | Woods | Conard, H. S. | . | 6/25/1923 | 1923 | Orig. i.d.: Thalictrum polygamum Muhl. ex Spreng. Annot.: T. dasycarpum Fisch, & Lall., Martin L. Grant, 1948, Anthers 1-1.3mm. mucronate, wider that filaments; leaves revolute, pubese; subeglandular | 645 |
| Ranunculaceae | Thalictrum dasycarpum Fisch. & Ave-Lall. | . | Dickinson. | Floete Prairie | . | Low damp prairie | Zylstra, Connie | . | 7/25/1958 | 1958 | . | 4118 |
| Ranunculaceae | Thalictrum dasycarpum Fisch. & Ave-Lall. | . | Dickinson. | Iowa Lakeside Laboratory | . | Understory in Acer negundo-Quercus macrocarpa ravine | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/19/1973 | 1973 | . | 5112 |
| Ranunculaceae | Thalictrum dasycarpum Fisch. & Ave-Lall. | . | Dickinson. | Lakeside Laboratory | . | Campus woods | Conard, H. S. | . | 6/30/1923 | 1923 | Orig. i.d.: Thalictrum polygamum Muhl. ex Spreng. Annot.: T. dasycarpum Fisch. & Lall., Martin L. Grant, 1948, Achenes apparently sessile; leaves revolute, pubese, subeglandular. | 648 |
| Ranunculaceae | Thalictrum dasycarpum Fisch. & Ave-Lall. | . | Dickinson. | Manhattan Lake. Sec. 14, NW-NE. | T99N_R37W_Sec14 | Low prairie | Grant, Martin L. | 8705 | 6/23/1948 | 1948 | . | 646 |
| Ranunculaceae | Thalictrum dasycarpum Fisch. & Ave-Lall. | . | Dickinson. | Milford Woods | T98N_R37W_Sec10 | Upland area | Eilers, L.J. | 5963 | 7/25/1966 | 1966 | Orig. i.d.: Thalictrum dioicum L.. Annot.: T. dasycarpum Fisch. & Lall., L.J. Eilers, 1979 | 4678 |
| Ranunculaceae | Thalictrum dasycarpum Fisch. & Ave-Lall. | . | Dickinson. | Miller's Bay, West Lake Okoboji | . | Woods | Shimek, Bohumil | . | 8/20/1909 | 1909 | Orig. i.d.: Thalictrum dioicum L. Annot.: Doubtful !!! [anon.]; T. dasycarpum Firsh. & Loll, Martin L. Grant, 1954 | 649 |
| Ranunculaceae | Thalictrum dasycarpum Fisch. & Ave-Lall. | . | Dickinson. | Near Beck's Spring, Miller's Bay | . | Woods | Shimek, Bohumil | . | 6/22/1912 | 1912 | . | 643 |
| Ranunculaceae | Thalictrum dasycarpum Fisch. & Ave-Lall. | . | Dickinson. | Near Emerson's Bay | . | Prairie. Pistillate | Shimek, Bohumil | . | 8/9/1910 | 1910 | Leaves thick revolute achenes subsessile, 3-3.5mm., not reflexed, obliquely ovate. [anon. MLG?] | 644 |
| Ranunculaceae | Thalictrum dasycarpum Fisch. & Ave-Lall. | . | Dickinson. | Silver Lake Fen | T100N_R38W_Sec32 | East fringe of fen | Begres, F. M. | . | 6/2/1968 | 1968 | . | 5338 |
| Ranunculaceae | Thalictrum dasycarpum Fisch. & Ave-Lall. | . | Dubuque. | Pine Hollow, northwest of Luxemburg | . | Woods on creek bottomland. | Shimek, Bohumil | . | 7/3/1929 | 1929 | . | 2168 |
| Ranunculaceae | Thalictrum dasycarpum Fisch. & Ave-Lall. | . | Johnson. | Sandy, seepage slopes along small branches. Cedar twnshp. | T81N_R5W_Sec35 | . | Thorne, Robert F. | 15813 | 5/14/1955 | 1955 | . | 4465 |
| Ranunculaceae | Thalictrum dasycarpum Fisch. & Ave-Lall. | . | Linn. | Along R.R. southwest of Coggan | . | Bog | Shimek, Bohumil | . | 6/10/1933 | 1933 | . | 2169 |
| Ranunculaceae | Thalictrum dioicum L. | . | Clay. | Wanata Park | . | Red oak woods | Grant, Martin L. | 12431 | 8/3/1954 | 1954 | . | 2499 |
| Ranunculaceae | Thalictrum dioicum L. | . | Clay. | Wanata State Park, 1/2 mi. south of Peterson on Little Sioux River. Sec. 33, S 1/2. | T94N_R38W_Sec33 | Rich woods | Thorne, Robert F. | 14509 | 8/3/1954 | 1954 | . | 4520 |
| Ranunculaceae | Thalictrum dioicum L. | . | Clayton. | North of Marquette | . | Near base of wooded bluff. | Shimek, Bohumil | . | 6/15/1920 | 1920 | . | 2170 |
| Ranunculaceae | Thalictrum dioicum L. | . | Winneshiek. | Decorah | . | Woods. Pistillate | Savage, T.E. | . | 05/01/1899 | 1899 | . | 2440 |
| Rhamnaceae | Ceanothus americanus L. | . | Dickinson. | Along Little Sioux River, 2 miles west of Milford. Okoboji twnshp. Sec. 10. | . | Shrub at edge of ungrazed woods. | Thorne, Robert F. | 12928 | 7/3/1953 | 1953 | . | 4121 |
| Rhamnaceae | Ceanothus americanus L. | . | Dickinson. | Arend's Kettlehole | . | Prairie | Grant, Martin L. | 12282 | 7/7/1954 | 1954 | . | 1967 |
| Rhamnaceae | Ceanothus americanus L. | . | Dickinson. | Elmcrest | . | . | Conard, H. S. | . | 7/9/1923 | 1923 | . | 900 |
| Rhamnaceae | Ceanothus americanus L. | . | Dickinson. | Floete Prairie | . | Dry prairie hillside | Zylstra, Connie | . | 7/25/1958 | 1958 | . | 4120 |
| Rhamnaceae | Ceanothus americanus L. | . | Dickinson. | Lookout, Miller's Bay, West Lake Okoboji | . | Dry prairie | Shimek, Bohumil | . | 8/18/1909 | 1909 | . | 899 |
| Rhamnaceae | Ceanothus americanus L. | . | Dickinson. | Near Arend's Kettlehole. Lakeville twnshp. Sec. 22. | . | Small shrub on virgin prairie. | Thorne, Robert F. | 12868 | 7/1/1953 | 1953 | . | 4122 |
| Rhamnaceae | Ceanothus americanus L. | . | Dickinson. | North of Milford | . | Prairie | Shimek, Bohumil | . | 8/14/1902 | 1902 | . | 1700 |
| Rhamnaceae | Ceanothus americanus L. | . | Emmet. | Estherville. Sec. 5, SW-SE. | T99N_R34W_Sec5 | High prairie. Co white | Grant, Martin L. | 11190 | 7/14/1949 | 1949 | . | 898 |
| Rhamnaceae | Ceanothus americanus L. | . | Johnson. | Along C.R.I.&P. RR. 1 1/2 miles SE of Iowa City. Scott twnshp. Sec. 19, East side. | . | Remnant prairie. Shrub | Thorne, Robert F. | 18372 | 10/3/1956 | 1956 | . | 4481 |
| Rhamnaceae | Ceanothus americanus L. | . | Muscatine. | Native prairie at cut 9 south of Wilton | . | . | Shimek, Bohumil | . | 6/28/1923 | 1923 | . | 2251 |
| Rhamnaceae | Ceanothus herbaceous Raf. | . | Harrison. | Missouri Valley, near station 3 | . | Loess ridge | Shimek, Bohumil | . | 6/5/1909 | 1909 | Orig. i.d.: Ceanothus ovatus Desf. var. pubescens T. & G. Annot.: C. herbaceous Raf., L. Eilers, 1979. var. pubescens (T.& G.) Shinners. County not listed by collector. For location see: Shimek, B. 1911-1913. The prairies. Bulletin from the laboratories of natural history of the State University of Iowa. Vol. VI. p. 169. | 2252 |
| Rhamnaceae | Ceanothus herbaceous Raf. | . | Monona. | Turin | . | Loess ridge | Shimek, Bohumil | . | 5/15/1909 | 1909 | Orig. i.d.: Ceanothus ovatus Desf. var. pubescens T. & G. Annot.: C. herbaceous Raf., L. Eilers, 1979. var. pubescens (T.&G.) Shinners [anon.] | 2253 |
| Rhamnaceae | Ceanothus herbaceus Raf. | . | Lyon. | . | T98N_R48W_Sec15 | Prairie. Co white | Grant, Martin L. | 12247 | 7/2/1954 | 1954 | Original i.d.: Ceanothus herbaceus Raf. (C. ovatus Desf.). Annotation: var. pubescens (T.&G.) Shinners [anon.] | 1968 |
| Rhamnaceae | Ceanothus herbaceus Raf. | . | Plymouth. | Code Prairie. Sec. 6, SE-SE. | T91N_R48W_Sec6 | . | Grant, Martin L. | 12478 | 8/12/1954 | 1954 | . | 2520 |
| Rhamnaceae | Rhamnus alnifolia L'Her. | . | Dubuque. | White Pine Hollow State Forest, 3 miles NW of Luxemburg. Liberty twnshp. Sec. 6,7,8. | . | Shrub | Thorne, Robert F. | 18450 | 5/18/1957 | 1957 | . | 4591 |
| Rhamnaceae | Rhamnus cathartica L. | . | Dickinson. | Elmcrest, beside road, Gull Pt. Park | . | Oak-ash forest. One plant, shrub, 12' tall, vegetative only | Grant, Martin L. | 13907 | 7/1/1959 | 1959 | . | 3920 |
| Rhamnaceae | Rhamnus cathartica L. | . | Dickinson. | Iowa Lakeside Laboratory | . | Acer negundo-Quercus macrocarpa woodland. Shrub | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/26/1973 | 1973 | . | 5153 |
| Rhamnaceae | Rhamnus cathartica L. | . | Dickinson. | Milford Woods, 2 miles west of Milford. Okoboji twnshp. Sec. 10, NW1/4. | T98N_R37W_Sec10 | . | Thorne, Robert F. | 19559 | 6/23/1958 | 1958 | . | 4418 |
| Rhamnaceae | Rhamnus cathartica L. | . | Dickinson. | Milford Woods. Sec. 10, NW-NE. | T98N_R37W_Sec10 | Bur oak woods. Shrub | Grant, Martin L. | 14998 | 8/4/1967 | 1967 | . | 4777 |
| Rhamnaceae | Rhamnus cathartica L. | . | Dickinson. | Spirit Lake | . | Forest, oak. 15' | Grant, Martin L. | 8328 | 8/25/1938 | 1938 | . | 1726 |
| Rhamnaceae | Rhamnus cathartica L. | . | Emmet. | Fort Defiance State Park. Estherville twnshp. Sec. 16. | . | Small tree at edge of woods on south-facing slope | Thorne, Robert F. | 14269 | 6/29/1954 | 1954 | . | 4123 |
| Rubiaceae | Cephalanthus occidentalis L. | . | Dickinson. | Elmcrest Pen. | . | Shrub swamp. Shrub 6' | Grant, Martin L. | 8826 | 7/21/1948 | 1948 | . | 1210 |
| Rubiaceae | Cephalanthus occidentalis L. | . | Dickinson. | Gull Point State Park, West Okoboji Lake. Lakeville twnshp. | . | Edge of marsh. Shrub, 2 meters tall | Thorne, Robert F. | 18546 | 7/21/1957 | 1957 | . | 4438 |
| Rubiaceae | Cephalanthus occidentalis L. | . | Hancock. | Pilot Knob State Park, Dead Man's Lake | T97N_R23W_Sec4 | Along shoreline and in shallow water | Begres, F.M. | . | 7/9/1968 | 1968 | . | 5279 |
| Rubiaceae | Cephalanthus occidentalis L. | . | Hancock. | Pilot Knob, Dead Man's Lake, | . | Lake margin | Grant, Martin L. | 12315 | 7/8/1954 | 1954 | . | 1998 |
| Rubiaceae | Galium aparine L. | . | Dickinson. | Elmcrest | . | . | Conard, H. S. | . | 7/9/1923 | 1923 | . | 1211 |
| Rubiaceae | Galium aparine L. | . | Dickinson. | Sunset Beach. Sec. 30, SE-SW. | T99N_R36W_Sec30 | Tilia-ash forest | Grant, Martin L. | 12155 | 6/22/1954 | 1954 | . | 1999 |
| Rubiaceae | Galium aparine L. | . | Tama. | 4 miles west of Tama | . | Upland woods | Shimek, Bohumil | . | 5/19/1929 | 1929 | . | 4157 |
| Rubiaceae | Galium asprellum Michx. | . | Lee. | Keokuk | . | . | Shimek, Bohumil | . | 07/05/1895 | 1895 | Annot.: G. concinnum, G.K. Wiltrock, 04-04-1927; Galium concinnum T.& G., P.J. Leyendecker, 1940; As determined, Robert A. Davidson, 07-1956 | 4168 |
| Rubiaceae | Galium boreale L. | . | Cerro Gordo. | Mason City | . | . | Shimek, Bohumil | . | 07/07/1896 | 1896 | Annot.: Galium boreale L. var. typicum, P.J. Leyendecker, 1940 | 4161 |
| Rubiaceae | Galium boreale L. | . | Dubuque. | Pine Hollow, 2 miles NW of Luxemburg. Liberty twnshp. | . | Crevices and ledges of limestone bluffs. | Thorne, Robert F. | 10007 | 6/30/1951 | 1951 | . | 4603 |
| Rubiaceae | Galium boreale L. | . | Clayton. | Along R.R. northwest of Edgewood | . | Prairie | Shimek, Bohumil | . | 6/15/1923 | 1923 | . | 2346 |
| Rubiaceae | Galium boreale L. | . | Dickinson. | 2 miles west of Milford, along Little Sioux River. | . | West-facing slope in woods. | Severe, Doris | 72 | 8/11/1957 | 1957 | . | 4159 |
| Rubiaceae | Galium boreale L. | . | Dickinson. | Along R.R. east of Montgomery | . | Prairie | Shimek, Bohumil | . | 6/18/1918 | 1918 | . | 4160 |
| Rubiaceae | Galium boreale L. | . | Dickinson. | Cayler Prairie. Lakeville twnshp. Sec. 17, NW 1/4. | . | Mesic to moist prairie, frequent. | Thorne, Robert F. | 16002 | 6/17/1955 | 1955 | . | 4439 |
| Rubiaceae | Galium boreale L. | . | Dickinson. | East of West Lake Okoboji | . | Prairie | Cavanagh, Lucy M . | . | 5/30/1910 | 1910 | . | 1213 |
| Rubiaceae | Galium boreale L. | . | Dickinson. | East shore of West Okoboji Lake | T99N_R37W_Sec12 | Open woods, Oak woods. | Naffziger, Joyce | 4 | 8/4/1961 | 1961 | . | 5383 |
| Rubiaceae | Galium boreale L. | . | Dickinson. | Elmcrest | . | . | Conard, H. S. | . | 6/23/1923 | 1923 | . | 1214 |
| Rubiaceae | Galium boreale L. | . | Dickinson. | Floete Prairie | . | Low wet prairie | Zylstra, Connie | . | 7/30/1958 | 1958 | . | 4158 |
| Rubiaceae | Galium boreale L. | . | Dickinson. | Iowa Lakeside Laboratory | . | N40, prairie. Fls white, erect, leaflets 4 | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/26/1973 | 1973 | . | 4954 |
| Rubiaceae | Galium boreale L. | . | Dickinson. | Montgomery. Sec. 28, NW-NW. | T100N_R36W_Sec28 | Prairie | Grant, Martin L. | 8743 | 7/1/1948 | 1948 | . | 1212 |
| Rubiaceae | Galium boreale L. | . | Dickinson. | Morainic Knob south of Robinson Lake | . | . | Thorne, Robert F. | 9760 | 8/13/1950 | 1950 | . | 4440 |
| Rubiaceae | Galium boreale L. | . | Dickinson. | South of Emerson's Bay, West Okoboji Lake | . | Prairie | Shimek, Bohumil | . | 8/24/1911 | 1911 | . | 1797 |
| Rubiaceae | Galium boreale L. | . | Emmet. | Anderson Prairie State Preserve. | . | Dry prairie hill slope. | Elliott, Mike, Ben Mullarkey, Leanne Martin | . | . | . | . | 5628 |
| Rubiaceae | Galium boreale L. | . | Emmet. | Anderson Prairie State Preserve. | . | Dry prairie hilltop. | Hayes, Jessica , Jon Crawford, Gina Rutenbeck | . | 7/6/2001 | 2001 | Annot.: incl. var. intermedium DC.; var. hyssopifolium (Hoffm.) DC. | 5646 |
| Rubiaceae | Galium boreale L. | . | Emmet. | Anderson Prairie State Preserve. | . | Wet prairie between hills. | Nixon, Jennifer, Heath Reinke, Michaeleen Gerken | . | 7/6/2001 | 2001 | . | 5653 |
| Rubiaceae | Galium boreale L. | . | Winneshiek. | Along R.R. Calmar | . | Prairie | Shimek, Bohumil | . | 7/17/1903 | 1903 | Annot.: Galium boreale L. var. hyssopifolium (Hoff.) DC. P.J. Leyendecker, 1940 | 4162 |
| Rubiaceae | Galium boreale L. | var. boreale | Dickinson. | Milford Woods. Sec. 10, NW-NE. | T98N_R37W_Sec10 | Bur Oak-Tilia forest | Grant, Martin L. | 13974 | 7/14/1959 | 1959 | . | 3939 |
| Rubiaceae | Galium circaezans Michx. | . | Johnson. | . | . | . | Linder, Mary | . | . | 1889 | Annot.: G. triflorum, G. Wittrock, 04-04-1927; Galium triflorum Michx. forma hispidum Leyendecker, P.J. Leyendecker, 1940. [Collection date given as 1889]. | 4171 |
| Rubiaceae | Galium circaezans Michx. | var. hypomalacum Fern. | Fremont. | State Park northwest of Hamburg | . | Wooded ravine and slopes. | Shimek, Bohumil | . | 6/21/1930 | 1930 | . | 4163 |
| Rubiaceae | Galium concinnum T. & G. | . | Cerro Gordo. | Southwest of Buffalo Slough, Mason City | . | Border of woods, prairie opening | Shimek, Bohumil | . | 9/5/1930 | 1930 | Orig. i.d.: Galium triflorum Michx. Annot.: Galium concinnum T. & G., Robert F. Thorne, 1955. [County not listed by collector, but location is distinct.] | 2350 |
| Rubiaceae | Galium concinnum T. & G. | . | Des Moines. | Burlington | . | . | Shimek, Bohumil | . | 6/18/1900 | 1900 | County not listed by collector, but location is distinct. | 4164 |
| Rubiaceae | Galium concinnum T. & G. | . | Dickinson. | Sunset Beach. Sec. 30, SW-SW 1/4. | T99N_R36W_Sec30 | Rich wooded ravine. | Thorne, Robert F. | 14452 | 7/29/1954 | 1954 | . | 4441 |
| Rubiaceae | Galium concinnum T. & G. | . | Emmet. | Fort Defiance Park | . | Oak woods. Co white | Grant, Martin L. | 12232 | 6/29/1954 | 1954 | . | 2000 |
| Rubiaceae | Galium concinnum T. & G. | . | Emmet. | Fort Defiance State Park. Estherville twnshp. Sec. 16. | . | Rich, moist woods | Thorne, Robert F. | . | 6/29/1954 | 1954 | . | 4512 |
| Rubiaceae | Galium labradoricum (Wieg.) Wieg. | . | Winnebago. | Eli Colby's property. Center twnshp. Sec. 15, NE1/4. | . | Peat bog | Thorne, Robert F. | 14401 | 7/8/1954 | 1954 | Iowa Nat. Areas Inventory William Pusateri 1983-08-06 | 4615 |
| Rubiaceae | Galium obtusum Bigelow | . | . | Along R.R. east of Iowa City | . | Low ground | Shimek, Bohumil | . | 6/10/1927 | 1927 | . | 4166 |
| Rubiaceae | Galium obtusum Bigelow | . | Dickinson. | Beck Canal, Elmcrest Peninsula, West Lake Okoboji. Lakeville twnshp. | . | Moist swale | Thorne, Robert F. | 14427 | 7/14/1954 | 1954 | . | 4442 |
| Rubiaceae | Galium obtusum Bigelow | . | Dickinson. | Cayler Prairie. Lakeville twnshp. Sec. 17, NW 1/4. | . | . | Thorne, Robert F. | 17608 | 6/11/1956 | 1956 | . | 4443 |
| Rubiaceae | Galium obtusum Bigelow | . | Dickinson. | R.R. tracks north of Milford. Sec. 6, W. | T99N_R36W_Sec6 | Prairie pond. Erect, Co white | Grant, Martin L. | 12141 | 6/21/1954 | 1954 | . | 2001 |
| Rubiaceae | Galium obtusum Bigelow | . | Dickinson. | Silver Lake. Sec. 32, SW-NW. | T100N_R38W_Sec32 | Fen | Grant, Martin L. | 13913 | 7/6/1959 | 1959 | . | 3925 |
| Rubiaceae | Galium obtusum Bigelow | . | Emmet. | Anderson Prairie State Preserve. | . | Dry prairie hill slope. | Elliott, Mike, Ben Mullarkey, Leanne Martin | . | . | . | . | 5632 |
| Rubiaceae | Galium obtusum Bigelow | . | Iowa. | South of Amana | . | Low prairie | Shimek, Bohumil | . | 7/21/1908 | 1908 | . | 4165 |
| Rubiaceae | Galium obtusum Bigelow | . | Pocahontas. | Kalsow Prairie | . | Prairie | Grant, Martin L. | 12383 | 7/28/1954 | 1954 | . | 2539 |
| Rubiaceae | Galium tinctorium L. | . | . | Along R.R. east of Iowa City | . | Low ground | Shimek, Bohumil | . | 6/21/1920 | 1920 | Galium obtusum Bigel, H.S. Conard, 05-1948 | 4170 |
| Rubiaceae | Galium tinctorium L. | . | . | Along R.R. east of Iowa City | . | Prairie | Shimek, Bohumil | . | 6/9/1921 | 1921 | Galium obtusum Bigel, D. Puff, 07-1973. | 2348 |
| Rubiaceae | Galium tinctorium L. | . | Dickinson. | Elmcrest woods | . | . | Conard, H. S. | . | 6/23/1923 | 1923 | Annot.: = G. obtusum Bigel, W.A.A., 1942 | 1215 |
| Rubiaceae | Galium tinctorium L. | . | Dickinson. | Iowa Lakeside Laboratory | . | N40, swamp | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/24/1973 | 1973 | G. obtusum Bigel, L. Eilers, 1979 | 4953 |
| Rubiaceae | Galium tinctorium L. | . | Dickinson. | South of Terrace Park, West Okoboji Lake | . | Low ground | Shimek, Bohumil | . | 7/29/1916 | 1916 | Galium obtusum Bigel, H.S. Conard, 05-1948 | 4169 |
| Rubiaceae | Galium tinctorium L. | . | Hancock. | Pilot Knob, Dead Man's Lake | . | Floating sphagnum mat. | Grant, Martin L. | 12318 | 7/8/1954 | 1954 | . | 2002 |
| Rubiaceae | Galium tinctorium L. | . | Hancock. | South edge of Dead Man's Lake, Pilot Knob State Park | . | Marshy border of bog. | Thorne, Robert F. | 15956 | 6/12/1955 | 1955 | . | 4579 |
| Rubiaceae | Galium trifidum L. | . | Dickinson. | 3 mi. south of Lakeside Lab. | . | Woods above Hanging Bog. | Conard, H. S. | . | 7/17/1923 | 1923 | Not triflorum BS. G. triflorum Michx., W.A.A. 1939, M.L. Grant, 1954 | 1217 |
| Rubiaceae | Galium trifidum L. | . | Dickinson. | Marsh in Stony Lake. | . | . | Thorne, Robert F. | 16194 | 7/14/1955 | 1955 | Iowa Nat. Areas Inventory William Pusateri 1983-08-06 | 4444 |
| Rubiaceae | Galium trifidum L. | . | Dickinson. | Silver Lake Fen. Sec. 32, SW-NW. | T100N_R38W_Sec32 | Lake margin. Co white | Grant, Martin L. | 11674 | 8/20/1952 | 1952 | Iowa Nat. Areas Inventory William Pusateri 1983-08-06 | 1500 |
| Rubiaceae | Galium trifidum L. | . | Dickinson. | Swan Lake | T100N_R35W_ Sec23&26 | . | Conard, H. S. | . | 7/27/1923 | 1923 | Iowa Nat. Areas Inventory William Pusateri 1983-08-06 | 1216 |
| Rubiaceae | Galium trifidum L. | . | Hancock. | Dead Man's Lake, Pilot Knob State Park. Ellington twnshp. | . | . | Thorne, Robert F. | 16270 | 8/4/1955 | 1955 | Iowa Nat. Areas Inventory William Pusateri 1983-08-06 | 4581 |
| Rubiaceae | Galium trifidum L. | . | Hancock. | Dead Man's Lake, Pilot Knob State Park. Ellington twnshp. | . | Bog mat | Thorne, Robert F. | 14368 | 7/8/1954 | 1954 | Galium tinctorium L., D. Puff, 07-1973 | 4580 |
| Rubiaceae | Galium trifidum L. | . | Lee. | Keokuk | . | . | Shimek, Bohumil | . | 07/05/1895 | 1895 | Annot.: Galium tinctorium L., Robert F. Thorne, 1955; Galium obtusum Bigel., C. Poff., 07-1973 | 2349 |
| Rubiaceae | Galium trifidum L. | . | Winnebago. | 1.5 mi. south of Lake Mills. Sec. 15, N. | T99N_R23W_Sec15 | Drained Salix bog. Co white | Grant, Martin L. | 12287 | 7/8/1954 | 1954 | Iowa Nat. Areas Inventory William Pusateri 1983-08-06 | 2003 |
| Rubiaceae | Galium triflorum Michx. | . | Clay. | Wanata State Park, 1/2 mi. south of Peterson on Little Sioux River. Sec. 33, S 1/2. | T94N_R38W_Sec33 | Rich woods | Thorne, Robert F. | 14528 | 8/3/1954 | 1954 | . | 4526 |
| Rubiaceae | Galium triflorum Michx. | . | Dickinson. | 2 miles west of Milford, along Little Sioux River. | . | Upland woods | Severe, Doris | 29 | 7/25/1957 | 1957 | . | 4167 |
| Rubiaceae | Galium triflorum Michx. | . | Dickinson. | East shore of West Lake Okoboji Lake | T99N_R36W_Sec30 | Dense woods, Basswood woods | Naffziger, Joyce | 78 | 8/11/1961 | 1961 | . | 5381 |
| Rubiaceae | Galium triflorum Michx. | . | Dickinson. | East shore of West Lake Okoboji | T99N_R36W_Sec18 | Dense woods, Maple woods | Naffziger, Joyce | 54 | 8/11/1961 | 1961 | . | 5318 |
| Rubiaceae | Galium triflorum Michx. | . | Dickinson. | East shore of West Okoboji Lake | T99N_R36W_Sec30 | Dense woods, Basswood woods | Naffziger, Joyce | 91 | 8/11/1961 | 1961 | . | 5317 |
| Rubiaceae | Galium triflorum Michx. | . | Dickinson. | East shore of West Okoboji Lake | T99N_R37W_Sec12 | Open woods, Oak woods. | Naffziger, Joyce | 17 | 8/4/1961 | 1961 | . | 5382 |
| Rubiaceae | Galium triflorum Michx. | . | Dickinson. | Iowa Lakeside Laboratory | . | Wooded water front. Prostrate | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/12/1973 | 1973 | . | 4952 |
| Rubiaceae | Galium triflorum Michx. | . | Dickinson. | Sunset Beach. Sec. 30, SE-SW. | T99N_R36W_Sec30 | Tilia-ash forest | Grant, Martin L. | 12153 | 6/22/1954 | 1954 | . | 2004 |
| Rubiaceae | Galium triflorum Michx. | . | Emmet. | Fort Defiance State Park, 1 mile west of Estherville. Estherville twnshp. Sec. 16. | . | Rich woods | Thorne, Robert F. | 13282 | 8/9/1953 | 1953 | . | 4513 |
| Rubiaceae | Galium triflorum Michx. | . | Monona. | Whiting Soft Maple Grove (Cozines) | . | . | Shimek, Bohumil | . | 9/17/1909 | 1909 | . | 4172 |
| Rubiaceae | Galium triflorum Michx. | var. triflorum | Dickinson. | Amundtson Woods, 3 mi. SW. of Milford. Sec. 26, SW-NW . | T98N_R37W_Sec26 | Bur Oak forest | Grant, Martin L. | 14401 | 8/8/1960 | 1960 | Original i.d.: Galium triflorum Michx. typical | 4315 |
| Rubiaceae | Galium triflorum Michx. | var. triflorum | Dickinson. | Milford Woods. Sec. 10, NW-NE. | T98N_R37W_Sec10 | Bur Oak-Tilia forest | Grant, Martin L. | 13975 | 7/14/1959 | 1959 | . | 3940 |
| Rubiaceae | Galium triflorum Michx | . | Dickinson. | Gull Point State Park. Lakeville twnshp. | . | Dry or moist woods | Thorne, Robert F. | 13535 | 8/19/1953 | 1953 | . | 4445 |
| Rubiaceae | Galium verum L. | . | Dickinson. | Elmcrest Peninsula, West Lake Okoboji. Lakeville twnshp. | T99N_R37W_ Sec23,24,25,26 | Disturbed prairie | Thorne, Robert F. | 11003 | 8/18/1952 | 1952 | . | 4446 |
| Rubiaceae | Galium verum L. | . | Dickinson. | Elmcrest. Sec. 25, NW-NW. | T99N_R37W_Sec25 | Prairie. Co yellow | Grant, Martin L. | 11645 | 8/18/1952 | 1952 | . | 1501 |
| Rubiaceae | Hedyotis crassifolia Raf. | . | Johnson. | . | . | . | Shimek, Bohumil | . | 04/27/1895 | 1895 | Orig. i.d.: Houstonia minima Beck. Annot.: As determined, Edward E. Terrill, 1953; = Hedyotis crassifolia Raf., D.R. 08-1993; see Houstonia pusilla Schoepf of Plants Database & The Plant List. | 4173 |
| Rubiaceae | Hedyotis crassifolia Raf. | . | Johnson. | North side of McBride Lake, McBride State Park. Big Grove twnshp. | . | Open ground on south-facing grassy slope. | Thorne, Robert F. | 17527 | 5/10/1956 | 1956 | Orig. i.d.: Houstonia minima Beck. Annot.: = Hedyotis crassifolia Raf., D.R., 08-1993; see Houstonia pusilla Schoepf of Plants Database & The Plant List. | 4488 |
| Rubiaceae | Hedyotis nigricans (Lam.) Fosb. | . | Harrison. | 4.5 mi. E. Mondamin. Sec. 35, NW-SW. | T80N_R44W_Sec35 | Loess bluff. Co white | Grant, Martin L. | 11621 | 8/5/1952 | 1952 | Annot.: = Hedyotis nigricans (Lam.) Fosb., D.R., 08-1993; see Stenaria nigricans (Lam.) Terrell of Plants Database & The Plant List. | 1777 |
| Rubiaceae | Hedyotis nigricans (Lam.) Fosb. | . | Mills. | East of Pacific Junction | . | Prairie on loess bluffs | Shimek, Bohumil | . | 5/29/1925 | 1925 | Orig. i.d.: Houstonia angustifolia Michx. Annot.: = Houstonia nigricans (Lam.) Fern., Edward E. Terrill, 1953; = Hedyotis nigricans (Lam.) Fosb., D.R., 08-1993; see Stenaria nigricans (Lam.) Terrell of Plants Database & The Plant List. | 4174 |
| Rubiaceae | Hedyotis nigricans (Lam.) Fosb. | . | Monona. | Near Preparation Canyon. Sioux twnshp. Sec. 24, NW 1/4. | . | Bare loessial face of road cut. | Thorne, Robert F. | 16327 | 8/11/1955 | 1955 | Orig. i.d.: Houstonia nigricans (Lam.) Fern. Annot.: = Hedyotis nigricans (Lam.) Fosb., D.R., 08-1993; see Stenaria nigricans (Lam.) Terrell of Plants Database & The Plant List. | 4561 |
| Rutaceae | Ptelea trifoliata L. | . | Des Moines. | Along Brush Creek northeast of Augusta | . | Upland woods | Shimek, Bohumil | . | 7/14/1928 | 1928 | Original i.d.: B.Shimek gives no name; Ptelea trifoliata L. [anon.]. | 2237 |
| Rutaceae | Ptelea trifoliata L. | . | Muscatine. | East of Salisbury bridge | . | Sand flat | Shimek, Bohumil | . | 6/6/1923 | 1923 | . | 2236 |
| Rutaceae | Zanthoxylum americanum Mill. | . | . | Along R.R. east of Iowa City | . | Prairie | Shimek, Bohumil | . | 8/20/1915 | 1915 | . | 2238 |
| Rutaceae | Zanthoxylum americanum Mill. | . | Decatur. | Southwest part of county | . | Wooded slopes | Shimek, Bohumil | . | 5/16/1902 | 1902 | . | 2239 |
| Rutaceae | Zanthoxylum americanum Mill. | . | Dickinson. | Bluffs of lake Floete's | . | . | Conard, H. S. | . | 7/4/1923 | 1923 | . | 869 |
| Rutaceae | Zanthoxylum americanum Mill. | . | Dickinson. | Elm Crest | . | . | Rogers, D. | . | 8/12/1932 | 1932 | . | 870 |
| Rutaceae | Zanthoxylum americanum Mill. | . | Dickinson. | Iowa Lakeside Laboratory | . | Slope along wooded water front. DBH 5 cm. | Bloethe, D., K. Cogan, & S. Pedersen | . | 7/19/1973 | 1973 | Orig. i.d.: Xanthoxylum americanum Mill. | 4955 |
| Rutaceae | Zanthoxylum americanum Mill. | . | Dickinson. | Milford Woods. Sec. 10, SE-NW. | T98N_R37W_Sec10 | Oak woodland. Shrub 7' | Grant, Martin L. | 8962 | 8/13/1949 | 1949 | . | 867 |
| Rutaceae | Zanthoxylum americanum Mill. | . | Dickinson. | South of Emerson's Bay, West Lake Okoboji | . | Woods | Shimek, Bohumil | . | 8/4/1910 | 1910 | . | 868 |
| 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 |
| Ranunculaceae | Aquilegia chrysantha Gray | . | Nobles | Worthington | . | Garden in town. Flowers pale yellow cream | Gustafson, John | . | 7/8/1958 | 1958 | . | 4106 |
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