Displaying 1 - 75 out of 270 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Albugo tragopogonis (Pers.) Gray | O. A. Stevens s.n. | 29 Jul 1915 | United States of America | North Dakota | Cass Co. Fargo | — |
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| Albugo tragopogonis (Pers.) Gray | O. A. Stevens s.n. | 29 Jul 1915 | United States of America | North Dakota | Cass Co. Fargo | — |
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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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| 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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| 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 38-287 | 03 Jul 1938 | United States of America | Wyoming | Yellowstone Park. Below pass on… | — |
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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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| 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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| Apocynum | O. A. Stevens 2645 | 05 Sep 1962 | United States of America | North Dakota | Richland Co. Top of small… | — |
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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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| 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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| 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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| 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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| 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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| Betula occidentalis Hook. | O. A. Stevens s.n. | 29 Aug 1920 | United States of America | North Dakota | Slope Co. swamp along river | — |
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| Betula occidentalis Hook. | O. A. Stevens s.n. | 31 Jul 1923 | United States of America | — | wet places on banks of… | — |
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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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| Bjerkandera | O. A. Stevens s.n. | 25 Sep 1921 | United States of America | North Dakota | Cass Co. Fargo | — |
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| Bjerkandera adusta (Willd.:Fr.) P.Karst. | O. A. Stevens s.n. | 1921 | — | — | — |
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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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| Bromus tectorum L. | O. A. Stevens s.n. | 08 Jul 1918 | United States of America | North Dakota | LaMoure Co. Independence | — |
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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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| Carex | O. A. Stevens 38-186 | 02 Jul 1938 | United States of America | — | Yellowstone Park. Spring Lake, east… | — |
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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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| 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 canescens L. | O. A. Stevens 38-178 | 02 Jul 1938 | United States of America | — | Yellowstone Park. Spring Lake east… | — |
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| Carex geyeri Boott | O. A. Stevens 38-139 | 02 Jul 1938 | — | — | Yellowstone River. | — |
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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 microptera Mack. | O. A. Stevens 38-324 | 03 Jul 1938 | United States of America | Wyoming | Big Horn Co. Below pass… | — |
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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 norvegica Retz. | O. A. Stevens 38-265 | 03 Jul 1938 | United States of America | — | Yellowstone Park; Bondi's Camp, Bighorn… | — |
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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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| Carex obtusata Lilj. | O. A. Stevens s.n. | 24 Jul 1920 | United States of America | North Dakota | Cass Co. | — |
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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 raynoldsii Dewey | O. A. Stevens 38-184 | 02 Jul 1938 | United States of America | — | Yellowstone Park. Low beach along… | — |
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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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| Cenangium furfuraceum (Roth) De Not. | O. A. Stevens s.n. | Nov 1916 | United States of America | North Dakota | Cass Co. near Fargo | — |
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| Cenangium furfuraceum (Roth) De Not. | O. A. Stevens s.n. | Nov 1916 | United States of America | North Dakota | Cass Co. near Fargo | — |
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| Claviceps purpurea (Fr.) Tul. | O. A. Stevens s.n. | 30 Aug 1919 | United States of America | North Dakota | Near Fargo | — |
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| Claviceps purpurea (Fr.) Tul. | O. A. Stevens s.n. | 30 Aug 1919 | United States of America | North Dakota | Near 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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| 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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| Cornus rugosa Lam. | O. A. Stevens 1367 | 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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| Diatrype americana Ellis & Berl. | O. A. Stevens s.n. | 10 Aug 1914 | United States of America | North Dakota | Cass Co. near Fargo | — |
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| Diatrype americana Ellis & Berl. | O. A. Stevens s.n. | 10 Aug 1914 | United States of America | North Dakota | In woods near Fargo. | — |
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| Diatrype americana Ellis & Berl. | O. A. Stevens s.n. | 10 Aug 1914 | United States of America | North Dakota | Cass Co. near Fargo | — |
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| Diatrypella frostii Peck | O. A. Stevens s.n. | 16 Nov 1916 | United States of America | North Dakota | Cass Co. near Fargo | — |
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| Diatrypella frostii Peck | O. A. Stevens s.n. | 16 Nov 1916 | United States of America | North Dakota | Cass Co. near Fargo | — |
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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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| 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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| 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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| 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 823 | 29 Jun 1945 | United States of America | North Dakota | Billings Co. Medora; north, lower… | — |
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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 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 919 | 23 Jun 1945 | United States of America | North Dakota | Mercer Co. site of Nuttall's… | — |
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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 pumilus Nutt. subsp. pumilus | O. A. Stevens | 22 Jun 1945 | United States of America | North Dakota | Mountrail Co. Sanish | — |
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| Erysiphe cichoracearum | O. A. Stevens s.n. | Oct 1914 | United States of America | North Dakota | near Fargo | — |
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| Erysiphe cichoracearum | O. A. Stevens s.n. | Sep 1914 | United States of America | North Dakota | Schafer | — |
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| Erysiphe cichoracearum | O. A. Stevens s.n. | 11 Oct 1914 | United States of America | North Dakota | Near Fargo | — |
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| Erysiphe cichoracearum | O. A. Stevens s.n. | 07 Oct 1914 | United States of America | North Dakota | Cass Co. | — |
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| Erysiphe cichoracearum | O. A. Stevens s.n. | Sep 1914 | United States of America | North Dakota | Cass Co. | — |
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| Erysiphe cichoracearum | O. A. Stevens s.n. | Sep 1914 | United States of America | North Dakota | Cass Co. | — |
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| Erysiphe cichoracearum | O. A. Stevens s.n. | 11 Oct 1914 | United States of America | North Dakota | Near Fargo | — |
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| Erysiphe cichoracearum | O. A. Stevens s.n. | Oct 1914 | United States of America | North Dakota | Near Fargo | — |
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| Erysiphe cichoracearum | O. A. Stevens s.n. | 07 Oct 1914 | United States of America | North Dakota | near Fargo | — |
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| Erysiphe communis (Wallr.) Fr. | O. A. Stevens s.n. | Sep 1914 | United States of America | — | Schafer | — |
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| Erysiphe martii Lév. | O. A. Stevens s.n. | 1923-09-30 | United States of America | North Dakota | Cass Co. | — |
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| Erysiphe martii Lév. | O. A. Stevens s.n. | 30 Sep 1923 | United States of America | North Dakota | Cass Co. | — |
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