Displaying 1 - 75 out of 270 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Carex assiniboinensis W.Boott | O. A. Stevens 1-26468 | 15 Jun 1934 | United States of America | Minnesota | Moorhead. | — |
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| Lactuca ludoviciana (Nutt.) Riddell | O. A. Stevens 3 | 15 Jun 1922 | United States of America | Kansas | Blue Rapids. | — |
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| Lactuca ludoviciana (Nutt.) Riddell | O. A. Stevens 6 | 15 Jun 1922 | United States of America | Kansas | Blue Rapids. | — |
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| Polygonum stevensii Brenckle | O. A. Stevens 38 34 | 29 Jun 1938 | United States of America | Montana | South of Forsythe | holotype |
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| Erigeron compositus var. glabratus Macoun | O. A. Stevens 38-060 | 30 Jun 1938 | United States of America | Montana | Carbon Co. Cooke Highway above… | — |
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| Carex geyeri Boott | O. A. Stevens 38-139 | 02 Jul 1938 | — | — | Yellowstone River. | — |
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| Antennaria rosea subsp. confinis (Greene) R.J.Bayer | O. A. Stevens 38-147 | 30 Jun 1938 | United States of America | Wyoming | Yellowstone Park. Obsidian Creek (Tuff… | — |
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| Elymus elymoides subsp. californicus (J.G.Sm.) Barkworth | O. A. Stevens 38-169 | 02 Jul 1938 | United States of America | — | Yellowstone Park Tour; Spring Lake;… | — |
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| Carex praticola Rydb. | O. A. Stevens 38-171 | 02 Jul 1938 | United States of America | Wyoming | Spring Lake east of Fishing… | — |
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| Carex microptera Mack. | O. A. Stevens 38-172 | 01 Jul 1938 | United States of America | — | Near Yellowstane Lake | — |
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| Carex hoodii Boott | O. A. Stevens 38-175 | July 1 | United States of America | Wyoming | Teton Co. Sandy meadow near… | — |
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| Carex microptera Mack. | O. A. Stevens 38-176 | 01 Jul 1938 | United States of America | — | Yellowstone Lake | — |
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| Carex canescens L. | O. A. Stevens 38-178 | 02 Jul 1938 | United States of America | — | Yellowstone Park. Spring Lake east… | — |
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| Carex athrostachya Olney | O. A. Stevens 38-179 | 02 Jul 1938 | United States of America | Wyoming | Yellowstone Park Tour. Spring Lake.… | — |
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| Carex raynoldsii Dewey | O. A. Stevens 38-184 | 02 Jul 1938 | United States of America | — | Yellowstone Park. Low beach along… | — |
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| Carex | O. A. Stevens 38-186 | 02 Jul 1938 | United States of America | — | Yellowstone Park. Spring Lake, east… | — |
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| Antennaria corymbosa E.E.Nelson | O. A. Stevens 38-214 | July 2, 1938 | United States of America | Wyoming | Yellowstone Park Tour, low beach… | — |
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| Antennaria rosea Greene subsp. rosea | O. A. Stevens 38-247 | 03 Jul 1938 | United States of America | Wyoming | Sheridan Co. meadow at pass… | — |
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| Carex norvegica Retz. | O. A. Stevens 38-265 | 03 Jul 1938 | United States of America | — | Yellowstone Park; Bondi's Camp, Bighorn… | — |
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| Antennaria rosea Greene subsp. rosea | O. A. Stevens 38-287 | 03 Jul 1938 | United States of America | Wyoming | Yellowstone Park. Below pass on… | — |
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| Poa alpina L. | O. A. Stevens 38-316 | 03 Jul 1938 | United States of America | Wyoming | Sheridan Co. Meadow at pass… | — |
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| Carex microptera Mack. | O. A. Stevens 38-324 | 03 Jul 1938 | United States of America | Wyoming | Big Horn Co. Below pass… | — |
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| Oenothera coronopifolia Torr. & A.Gray | O. A. Stevens 38-333 | 04 Jul 1938 | United States of America | Wyoming | Crook Co. roadside near Moorcroft | — |
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| Astragalus miser var. hylophilus (Rydb.) Barneby | O. A. Stevens 39-311 | 30 Jul 1939 | United States of America | Wyoming | Mt. Washburn. Yellowstone Park | — |
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| Rorippa austriaca (Crantz) Besser | O. A. Stevens 234 | 22 Jun 1937 | United States of America | North Dakota | Cass Co. Hickson | — |
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| Fraxinus nigra Marshall | O. A. Stevens 263 | 03 Aug 1937 | United States of America | North Dakota | Pembina Co. Svold | — |
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| Carex sychnocephala J.Carey | O. A. Stevens 272 | 08 Aug 1937 | United States of America | North Dakota | Lake Metigosche, Turtle Mts. | — |
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| Penstemon eriantherus Pursh | O. A. Stevens 354 | 11 Jun 1938 | United States of America | North Dakota | McKenzie Co. Side of butte… | — |
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| Juniperus communis L. | O. A. Stevens 373 | 08 Jul 1938 | United States of America | North Dakota | Cavalier Co. | — |
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| Penstemon grandiflorus Nutt. | O. A. Stevens 446 | 19 Jun 1940 | United States of America | Minnesota | Clay Co. Muskoda | — |
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| Juniperus scopulorum var. columnaris Fassett | O. A. Stevens 509 | 16 May 1941 | United States of America | North Dakota | Slope Co. | — |
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| Stereum gausapatum (Fr.) Fr. | O. A. Stevens 522 | 25 Sep 1921 | United States of America | North Dakota | Cass Co. Fargo. | — |
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| Puccinia polygoni-amphibii Pers. | O. A. Stevens 565 | 21 Sep 1923 | United States of America | North Dakota | Leonard | — |
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| Ustilago avenae (Pers.) Rostr. | O. A. Stevens 674 | 03 Jul 1929 | United States of America | South Dakota | Northville | — |
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| Arnica fulgens Pursh | O. A. Stevens 683 | 22 Jun 1943 | United States of America | North Dakota | Grand Forks Co. 3 mi.… | — |
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| Fraxinus pennsylvanica var. campestris (Britton) F.C.Gates | O. A. Stevens 752 | 02 Sep 1943 | United States of America | North Dakota | Cass Co. | — |
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| Alopecurus pratensis L. | O. A. Stevens 767 | 17 Jun 1944 | United States of America | North Dakota | Turtle Mts., Metigoshe State Park. | — |
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| Poa annua L. | O. A. Stevens 803 | 03 Jul 1945 | United States of America | North Dakota | Fargo | — |
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| Astragalus australis var. glabriusculus (Hook.) Isely | O. A. Stevens 811 | 17 Jun 1945 | United States of America | North Dakota | Morton Co. Rocky bank of… | — |
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| Erigeron glabellus Nutt. var. glabellus | O. A. Stevens 819 | 15 Jun 1945 | United States of America | North Dakota | Morton Co. Huff; lower slope,… | — |
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| Erigeron glabellus Nutt. var. glabellus | O. A. Stevens 820 | 15 Jun 1945 | United States of America | North Dakota | Morton Co. Huff; lower slope,… | — |
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| Erigeron glabellus Nutt. var. glabellus | O. A. Stevens 821 | 15 Jun 1945 | United States of America | North Dakota | Morton Co. Huff; north side… | — |
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| Erigeron glabellus subsp. pubescens (Hook.) Cronquist | O. A. Stevens 822 | 30 Jun 1945 | United States of America | North Dakota | Stutsman Co. Jamestown; shallow coulee… | — |
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| Erigeron glabellus Nutt. var. glabellus | O. A. Stevens 823 | 29 Jun 1945 | United States of America | North Dakota | Billings Co. Medora; north, lower… | — |
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| Onoclea sensibilis L. | O. A. Stevens 833 | 07 Jul 1945 | United States of America | North Dakota | Richmond Co. Leonard. | — |
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| Erigeron glabellus Nutt. var. glabellus | O. A. Stevens 846 | 22 Jun 1945 | United States of America | North Dakota | Mountrail Co. Sanish; steep northside… | — |
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| Erigeron glabellus Nutt. var. glabellus | O. A. Stevens 919 | 23 Jun 1945 | United States of America | North Dakota | Mercer Co. site of Nuttall's… | — |
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| Eragrostis spectabilis (Pursh) Steud. | O. A. Stevens 1048 | 12 Sep 1947 | United States of America | Minnesota | Clay Co. Buffalo State Park. | — |
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| Carex obtusata Lilj. | O. A. Stevens 1052 | 17 Jun 1948 | United States of America | Minnesota | Clay Co. Muskoda | — |
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| Cornus rugosa Lam. | O. A. Stevens 1367 | 10 Aug 1952 | United States of America | Minnesota | Otter Tail Co. Pelican Lake | — |
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| Cornus alternifolia L.f. | O. A. Stevens 1368 | 10 Aug 1952 | United States of America | Minnesota | Otter Tail Co. Pelican Lake | — |
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| Dalea enneandra Nutt. | O. A. Stevens 1389 | 29 Aug 1952 | United States of America | North Dakota | Ft. Yates. Nearby norther limit.… | — |
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| Pilea pumila (L.) A.Gray | O. A. Stevens 1400 | 10 Sep 1952 | United States of America | North Dakota | Richardson Co. | — |
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| Betula papyrifera Marshall x B. glandulifera (Regel) B.T.Butler | O. A. Stevens 1403 | 10 Sep 1952 | United States of America | North Dakota | Richland Co. | — |
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| Solanum nitidibaccatum Bitter | O. A. Stevens 1465 | 14 Aug 1953 | United States of America | North Dakota | Barnes Co. Litchville | — |
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| Asclepias sullivantii Engelm. ex A.Gray | O. A. Stevens 1486 | 15 Jul 1954 | United States of America | North Dakota | Cass Co. Kindred | — |
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| Rumex stenophyllus Ledeb. | O. A. Stevens 1493 | 25 Jul 1954 | United States of America | Minnesota | Clay Co. Low ground near… | — |
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| Juncus gerardii Loisel. | O. A. Stevens 1497 | 01 Aug 1954 | United States of America | North Dakota | Cass Co. | — |
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| Arctium tomentosum Mill. | O. A. Stevens 1634 | 29/Jul/1956 | United States of America | North Dakota | Cass Co. Fargo | — |
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| Carduus nutans L. | O. A. Stevens 1635 | 28 Jul 1956 | United States of America | North Dakota | McLean Co. Benedict | — |
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| Ostrya virginiana (Mill.) K.Koch | O. A. Stevens 1666 | 12 Sep 1956 | United States of America | North Dakota | Dodgen Buttes | — |
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| Alliaria petiolata (M.Bieb.) Cavara & Grande | O. A. Stevens 1943 | 20 Jun 1958 | United States of America | Minnesota | Clay Co. | — |
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| Solanum emulans Raf. | O. A. Stevens 1994 | 15 Aug 1958 | United States of America | Minnesota | Leech Lake, Squaw Point | — |
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| Opuntia | O. A. Stevens 2097 | 10 Jul 1959 | United States of America | North Dakota | Krueger Lake | — |
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| Uncinula macrospora Peck | O. A. Stevens 2411 | Oct 1914 | United States of America | North Dakota | Near Fargo | — |
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| Solidago ptarmicoides (Nees) B.Boivin | O. A. Stevens 2621 | 15 Aug 1962 | United States of America | Minnesota | Clay Co. South of Buffalo… | — |
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| Apocynum | O. A. Stevens 2645 | 05 Sep 1962 | United States of America | North Dakota | Richland Co. Top of small… | — |
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| Bromus tectorum L. | O. A. Stevens s.n. | 08 Jul 1918 | United States of America | North Dakota | LaMoure Co. Independence | — |
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| Bjerkandera adusta (Willd.:Fr.) P.Karst. | O. A. Stevens s.n. | 1921 | — | — | — |
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| Bjerkandera | O. A. Stevens s.n. | 25 Sep 1921 | United States of America | North Dakota | Cass Co. Fargo | — |
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| Bjerkandera fumosa (Pers.:Fr.) P.Karst. | O. A. Stevens s.n. | 01 Oct 1921 | United States of America | North Dakota | Cass Co. Fargo | — |
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| Bjerkandera fumosa (Pers.:Fr.) P.Karst. | O. A. Stevens s.n. | 01 Oct 1921 | United States of America | North Dakota | Cass Co. Fargo | — |
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| Coriolopsis gallica (Fr.) Ryvarden | O. A. Stevens s.n. | 19 Jun 1921 | United States of America | North Dakota | Cass Co. Fargo | — |
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| Coriolopsis gallica (Fr.) Ryvarden | O. A. Stevens s.n. | 19 Jun 1921 | United States of America | North Dakota | Cass Co. Fargo | — |
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| Trichaptum biforme (Fr.) Ryvarden | O. A. Stevens s.n. | Sep 1921 | United States of America | North Dakota | Cass Co. Fargo | — |
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