Displaying 1 - 75 out of 517 Object(s)

Taxon Collector Date Country State/Province Locality Type Status Barcode
Acalypha rhomboidea Raf. A. Hayden 9039 27 Oct 1939 United States of America Iowa Lee Co. Jackson Twp. Rocky… — 3905644 Acalypha rhomboidea Raf.
Acer negundo L. A. Hayden 872 15 May 1936 United States of America Iowa Clay Co. Two miles south… — 2485201 Acer negundo L.
Acer nigrum F.Michx. A. Hayden 871 16 Oct 1936 United States of America Iowa Clay Co. Slopes of wooded… — 2486976 Acer nigrum F.Michx.
Acer saccharinum L. A. Hayden 7156 15 Oct 1940 United States of America Iowa Clay Co. Lake Twp., Sec.… — 2488636 Acer saccharinum L.
Acer saccharinum L. A. Hayden 9754 09 Jul 1939 United States of America Iowa Clay Co. Lake twp., Sec.… — 2488712 Acer saccharinum L.
Acer saccharinum L. A. Hayden 7157 01 Sep 1940 United States of America Iowa Cerro Gordo Co. Clear Lake… — 2488737 Acer saccharinum L.
Aesculus glabra Willd. A. Hayden 11348 25 Apr 1938 United States of America Iowa Davis Co. Sec. 15. About… — 2497483 Aesculus glabra Willd.
Aesculus glabra Willd. A. Hayden 11347 22 Apr 1938 United States of America Iowa Davis Co. Sec. 15. 1… — 2497484 Aesculus glabra Willd.
Aesculus glabra Willd. A. Hayden 7145 14 May 1939 United States of America Iowa Madison Co. Lincoln Twp., Sec.… — 2497548 Aesculus glabra Willd.
Aesculus glabra Willd. A. Hayden 9832 26 Oct 1939 United States of America Iowa Davis Co. Salt Creek twp.… — 2497593 Aesculus glabra Willd.
Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. A. Hayden 10941 26 Jun 1937 United States of America Iowa Davis Co. Lick Creek Twp.,… — 1555878 Agrostis hyemalis (Walter) Britton, Sterns & Poggenb.
Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. A. Hayden 9269 s.d. United States of America Iowa Davis Co. Lick Creek Twp.,… — 1555882 Agrostis hyemalis (Walter) Britton, Sterns & Poggenb.
Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. A. Hayden 8147 19 Jun 1940 United States of America Iowa Clayton Co. Giard Twp. Sec.… — 1555883 Agrostis hyemalis (Walter) Britton, Sterns & Poggenb.
Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. A. Hayden 7064 21 Jun 1937 United States of America Iowa Lyon Co. Sioux Twp. Gitche… — 1555887 Agrostis hyemalis (Walter) Britton, Sterns & Poggenb.
Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. A. Hayden 612 26 Jun 1936 United States of America Iowa Palo Alto Co. Highland Twp.,… — 1555890 Agrostis hyemalis (Walter) Britton, Sterns & Poggenb.
Agrostis perennans (Walter) Tuck. A. Hayden 8140 14 Sep 1940 United States of America Iowa Clay Co. Peterson Twp., Sec.… — 1557087 Agrostis perennans (Walter) Tuck.
Agrostis perennans (Walter) Tuck. A. Hayden 42 26 Jul 1934 United States of America — Emmet, Emmet twp. Sec. 18.… — 1557089 Agrostis perennans (Walter) Tuck.
Agrostis stolonifera L. A. Hayden 265 19 Jul 1935 United States of America Iowa Clay Co. Outlet Lost Island… — 1533170 Agrostis stolonifera L.
Agrostis stolonifera L. A. Hayden 9287 10 Jul 1939 United States of America Iowa Clay Co. Pickerel Run. — 1533171 Agrostis stolonifera L.
Alopecurus aequalis Sobol. A. Hayden 241 30 May 1936 United States of America Iowa Clay Co. Lake Twp. Sec.… — 1637661 Alopecurus aequalis Sobol.
Alopecurus aequalis Sobol. A. Hayden 9280 14 Jul 1939 United States of America Iowa Clay Co. Lake Twp., Sec.… — 1637662 Alopecurus aequalis Sobol.
Alopecurus carolinianus Walter A. Hayden 7098 22 Jun 1937 United States of America Iowa Lyon Co. Sioux Twp. Gitche… — 1637929 Alopecurus carolinianus Walter
Amorpha canescens Pursh A. Hayden 9911 26 Sep 1940 United States of America Iowa Madison Co. Lincoln Twp., about… — 2558813 Amorpha canescens Pursh
Amorpha canescens Pursh A. Hayden 4023 12 Jul 1934 United States of America Iowa Palo Alto Co. Highland Twp.,… — 2558896 Amorpha canescens Pursh
Amorpha fruticosa L. A. Hayden 4052 27 Jul 1933 United States of America Iowa Clay Co. Freeman Twp., Spring… — 2559198 Amorpha fruticosa L.
Amphicarpaea bracteata (L.) Fernald A. Hayden 400 31 Aug 1933 United States of America Iowa Winneshiek Co. 2 miles north… — 2560149 Amphicarpaea bracteata (L.) Fernald
Amphicarpaea bracteata (L.) Fernald A. Hayden 11312 28 Sep 1938 United States of America Iowa Boone Co. Cass Twp., about… — 2560168 Amphicarpaea bracteata (L.) Fernald
Andropogon gerardii Vitman A. Hayden 1 27 Aug 1934 United States of America Iowa Palo Alto Co. Lost Island… — 1639246 Andropogon gerardii Vitman
Anthyllis vulneraria L. A. Hayden 875 17 Jul 1935 United States of America Iowa Wright Co. East of Clarion — 1043273 Anthyllis vulneraria L.
Anthyllis vulneraria L. A. Hayden s.n. Jul 1925 United States of America Iowa Wright Co. Clarion — 1043271 Anthyllis vulneraria L.
Apios americana Medik. A. Hayden 387 31 Aug 1933 United States of America Iowa Winneshiek Co. — 2560379 Apios americana Medik.
Apios americana Medik. A. Hayden 9913 22 Aug 1940 United States of America Iowa Palo Alto Co. Freedom Twp.,… — 2560428 Apios americana Medik.
Apios americana Medik. A. Hayden 9912 05 Sep 1940 United States of America Iowa Davis Co. along Lick Creek… — 2560622 Apios americana Medik.
Artemisia frigida Willd. A. Hayden s.n. Sep 1926 United States of America South Dakota Near Belle Fourche — 1894295 Artemisia frigida Willd.
Astragalus agrestis Douglas ex G.Don A. Hayden 6005 25 Jun 1937 United States of America Iowa Clay Co. Lake Twp., sec.… — 01214869 Astragalus agrestis Douglas ex G.Don
Astragalus agrestis Douglas ex G.Don A. Hayden 6005 25 Jun 1937 United States of America Iowa Clay Co. Lake Twp., sec.… — 01214870 Astragalus agrestis Douglas ex G.Don
Astragalus agrestis Douglas ex G.Don A. Hayden 9345 21 May 1939 United States of America Iowa Clay Co. Lake Twp., Sec.… — 01214871 Astragalus agrestis Douglas ex G.Don
Astragalus canadensis L. var. canadensis A. Hayden 6004 14 Aug 1937 United States of America Iowa Clay Co. Lake Twp., Sec.… — 01247128 Astragalus canadensis L. var. canadensis
Astragalus canadensis L. var. canadensis A. Hayden 9917 10 Aug 1940 United States of America Iowa Clay Co. Lake Twp., Sec.… — 01247129 Astragalus canadensis L. var. canadensis
Astragalus crassicarpus Nutt. var. crassicarpus A. Hayden 4031 15 May 1934 United States of America Iowa Palo Alto Co. Lost Island… — 01247988 Astragalus crassicarpus Nutt. var. crassicarpus
Astragalus distortus Torr. & A.Gray var. distortus A. Hayden 9346 11 May 1939 United States of America Iowa Wapello Co. Washington Twp. About… — 01248545 Astragalus distortus Torr. & A.Gray var. distortus
Betula L. A. Hayden 10308 13 Sep 1937 United States of America Iowa Allamakee Co. Union City Twp. — 2477840 Betula L.
Betula nigra L. A. Hayden 9143 25 Apr 1938 United States of America Iowa Davis Co. One mile west… — 2476484 Betula nigra L.
Betula pendula Roth A. Hayden 839 17 Sep 1936 United States of America Iowa Palo Alto Co. Highland Twp.,… — 2477373 Betula pendula Roth
Bidens cernua L. A. Hayden 10867 08 Sep 1936 United States of America Iowa Palo Alto Co. Lost Island… — 1925710 Bidens cernua L.
Bidens frondosa L. A. Hayden 10877 11 Sep 1936 United States of America Iowa Palo Alto Co. Lost Island… — 1909588 Bidens frondosa L.
Bidens frondosa L. A. Hayden 10870 18 Sep 1938 United States of America Iowa Palo Alto Co. Highland Twp.,… — 1909589 Bidens frondosa L.
Bidens tripartita L. A. Hayden 10864 30 Aug 1936 United States of America Iowa clay Co. Around pond and… — 1925976 Bidens tripartita L.
Bidens vulgata Greene A. Hayden 10876 08 Sep 1936 United States of America Iowa Clay Co. Lost Island Twp.,… — 1910804 Bidens vulgata Greene
Bouteloua curtipendula (Michx.) Torr. A. Hayden 7080 05 Sep 1937 United States of America Iowa Cherokee Co. Pilot Twp., Sec.… — 1642653 Bouteloua curtipendula (Michx.) Torr.
Bouteloua gracilis (Kunth) Lag. ex Griffiths A. Hayden s.n. 14 Aug 1934 United States of America Iowa Clay Co. Lake Twp., Sec.… — 1643386 Bouteloua gracilis (Kunth) Lag. ex Griffiths
Bouteloua gracilis (Kunth) Lag. ex Griffiths A. Hayden 88 08 Jul 1935 United States of America Iowa Dewey's Pasture; gravelly hilltop; Lake… — 1643389 Bouteloua gracilis (Kunth) Lag. ex Griffiths
Bouteloua hirsuta Lag. A. Hayden 3130 12 Aug 1943 United States of America Iowa Waterman Twp., Sec. 24; forming… — 1643904 Bouteloua hirsuta Lag.
Bouteloua hirsuta Lag. A. Hayden 7081 13 Sep 1937 United States of America Iowa Union City Twp., Sec. 33;… — 1643908 Bouteloua hirsuta Lag.
Bouteloua hirsuta Lag. A. Hayden 765 28 Aug 1935 United States of America Iowa Palo Alto Co. Lost Island… — 1643909 Bouteloua hirsuta Lag.
Bromus inermis Leyss. A. Hayden 8175 07 Jul 1940 United States of America Iowa Roadside, Algona, Cresco Twp., Sec.… — 1636300 Bromus inermis Leyss.
Bromus inermis Leyss. A. Hayden 28 26 Jun 1934 United States of America Iowa Emmet Co. Estherville twp., Sec.… — 1636304 Bromus inermis Leyss.
Bromus tectorum L. A. Hayden 104 18 Jun 1935 United States of America Iowa Palo Alto Co. Highland Twp.,… — 664491 Bromus tectorum L.
Bromus tectorum L. A. Hayden 102 25 Jun 1935 United States of America Iowa Clay Co. Sioux Twp., Sec.… — 664492 Bromus tectorum L.
Calamagrostis canadensis (Michx.) P.Beauv. A. Hayden 93 12 Jul 1935 United States of America Iowa Palo Alto Co. E. Lost… — 1645836 Calamagrostis canadensis (Michx.) P.Beauv.
Calamagrostis canadensis (Michx.) P.Beauv. A. Hayden 611 23 Jun 1936 United States of America Iowa Clay Co. Outlet of Lost… — 1645837 Calamagrostis canadensis (Michx.) P.Beauv.
Calamagrostis canadensis (Michx.) P.Beauv. A. Hayden 92 11 Jul 1935 United States of America Iowa Palo Alto Co. Highland Twp.… — 1645845 Calamagrostis canadensis (Michx.) P.Beauv.
Calamagrostis canadensis (Michx.) P.Beauv. A. Hayden 90 10 Jul 1935 United States of America Iowa Palo Alto Co. Hansen's farm,… — 1645848 Calamagrostis canadensis (Michx.) P.Beauv.
Calamagrostis canadensis (Michx.) P.Beauv. A. Hayden 97 14 Jun 1935 United States of America Iowa Palo Alto Co. Lost Island… — 1645849 Calamagrostis canadensis (Michx.) P.Beauv.
Calamagrostis neglecta subsp. inexpansa (A.Gray) Tzvelev A. Hayden 9289 20 Jul 1939 United States of America Iowa Clay Co. In water at… — 1646812 Calamagrostis neglecta subsp. inexpansa (A.Gray) Tzvelev
Calamagrostis neglecta subsp. inexpansa (A.Gray) Tzvelev A. Hayden 8007 11 Jul 1937 United States of America Iowa Palo Alto Co. Five miles… — 1646871 Calamagrostis neglecta subsp. inexpansa (A.Gray) Tzvelev
Calamagrostis neglecta subsp. inexpansa (A.Gray) Tzvelev A. Hayden 91 16 Jul 1935 United States of America Iowa Emmet Co. 4 mi. N.… — 1646872 Calamagrostis neglecta subsp. inexpansa (A.Gray) Tzvelev
Calamagrostis neglecta subsp. inexpansa (A.Gray) Tzvelev A. Hayden 89 14 Jul 1935 United States of America Iowa Clay Co. Lake Twp., Sec… — 1646873 Calamagrostis neglecta subsp. inexpansa (A.Gray) Tzvelev
Calamovilfa longifolia (Hook.) Hack. ex Scribn. & Southw. A. Hayden 9278 July 31, 1939 United States of America Iowa Lyon Co. Sioux Twp. On… — 1647724 Calamovilfa longifolia (Hook.) Hack. ex Scribn. & Southw.
Carduus acanthoides L. A. Hayden 10849 23 Jul 1938 United States of America Iowa Plymouth Co. Washington Twp., Sec.… — 532241 Carduus acanthoides L.
Carduus acanthoides L. A. Hayden s.n. 14 Jul 1926 United States of America Iowa Council Bluffs — 532251 Carduus acanthoides L.
Carduus nutans L. A. Hayden 10848 08 Jul 1937 United States of America Iowa Hamilton Co. Ellsworth Twp., Sec.… — 532288 Carduus nutans L.
Carex alopecoidea Tuck. A. Hayden 670 27 Jun 1936 United States of America Iowa Clay Co. Clay Co., Gillett's… — 2235370 Carex alopecoidea Tuck.
Carex alopecoidea Tuck. A. Hayden 670 27 Jun 1936 United States of America Iowa Clay Co. Clay Co., Gillett's… — 2235378 Carex alopecoidea Tuck.
Carex annectens (E.P.Bicknell) E.P.Bicknell A. Hayden 3179 26 Jul 1943 United States of America Iowa Palo Alto Co. On sandy… — 2236299 Carex annectens (E.P.Bicknell) E.P.Bicknell