Displaying 126 - 200 out of 270 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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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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| Tranzschelia pruni-spinosae (Pers.) Dietel | O. A. Stevens s.n. | 19 Jun 1921 | United States of America | North Dakota | Cass Co. | — |
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| Tranzschelia pruni-spinosae (Pers.) Dietel | O. A. Stevens s.n. | 19 Jun 1921 | United States of America | North Dakota | Cass Co. | — |
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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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| Puccinia recondita Roberge ex Desm. | O. A. Stevens s.n. | 26 May 1915 | United States of America | North Dakota | Cass Co. near Fargo | — |
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| Puccinia recondita Roberge ex Desm. | O. A. Stevens s.n. | 26 May 1915 | United States of America | North Dakota | Cass Co. near Fargo | — |
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| Puccinia recondita Roberge ex Desm. | O. A. Stevens s.n. | 23 May 1915 | United States of America | North Dakota | Cass Co. near Fargo | — |
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| Puccinia redfieldiae Tracy | O. A. Stevens s.n. | 04 Jul 1929 | United States of America | North Dakota | Kindred | — |
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| Puccinia redfieldiae Tracy | O. A. Stevens s.n. | 21 Aug 1918 | United States of America | North Dakota | near Anselm | — |
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| Puccinia redfieldiae Tracy | O. A. Stevens s.n. | 21 Aug 1918 | United States of America | North Dakota | Near Anselm. | — |
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| Puccinia redfieldiae Tracy | O. A. Stevens s.n. | 04 Jul 1929 | United States of America | North Dakota | Kindred. | — |
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| Puccinia schedonnardi Kellerm. & Swingle | O. A. Stevens s.n. | 24 Aug 1919 | United States of America | North Dakota | Cooperstown | — |
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| Puccinia tanaceti var. dracunculina (Fahrend.) Cummins | O. A. Stevens s.n. | 21 Sep 1923 | United States of America | North Dakota | Leonard | — |
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| Puccinia tanaceti var. dracunculina (Fahrend.) Cummins | O. A. Stevens s.n. | 21 Sep 1923 | United States of America | North Dakota | Leonard | — |
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| Puccinia tanaceti var. dracunculina (Fahrend.) Cummins | O. A. Stevens s.n. | 21 Sep 1923 | United States of America | North Dakota | Leonard | — |
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| Hypoxylon fuscum (Pers.) Fr. | O. A. Stevens s.n. | 18 Nov 1916 | United States of America | North Dakota | near Fargo | — |
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| Puccinia violae (Schumach.) DC. | O. A. Stevens s.n. | 05 Jun 1924 | United States of America | North Dakota | Cass Co. | — |
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| Puccinia violae (Schumach.) DC. | O. A. Stevens s.n. | 05 Jun 1924 | United States of America | North Dakota | Cass Co. | — |
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| Puccinia violae (Schumach.) DC. | O. A. Stevens s.n. | 05 Jun 1924 | United States of America | North Dakota | Cass Co. | — |
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| Puccinia xanthii | O. A. Stevens s.n. | 11 Sep 1923 | United States of America | North Dakota | Cass Co. | — |
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| Puccinia xanthii | O. A. Stevens s.n. | 11 Sep 1923 | United States of America | North Dakota | Cass Co. | — |
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| Puccinia xanthii | O. A. Stevens s.n. | 20 Aug 1918 | United States of America | North Dakota | Enderlin | — |
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| Puccinia xanthii | O. A. Stevens s.n. | 11 Sep 1923 | United States of America | North Dakota | Cass Co. | — |
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| Puccinia xanthii | O. A. Stevens s.n. | 20 Aug 1918 | United States of America | North Dakota | Enderlin | — |
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| Hypoxylon rubiginosum (Pers.:Fr.) Fr. | O. A. Stevens s.n. | 03 Jun 1924 | United States of America | North Dakota | Cass Co. | — |
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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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| Lemna trisulca L. | O. A. Stevens s.n. | 20 Aug 1937 | United States of America | North Dakota | Richland Co. Leonard | — |
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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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| Onoclea sensibilis L. | O. A. Stevens s.n. | 14 Aug 1916 | United States of America | North Dakota | Power | — |
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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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| Opuntia | O. A. Stevens 2097 | 10 Jul 1959 | United States of America | North Dakota | Krueger Lake | — |
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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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| Carex raynoldsii Dewey | O. A. Stevens 38-184 | 02 Jul 1938 | United States of America | — | Yellowstone Park. Low beach along… | — |
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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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| Lycoperdon pyriforme Schaeff.:Pers. | O. A. Stevens | 25 Sep 1921 | United States of America | North Dakota | Cass Co. | — | ||||
| 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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| 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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| Solanum nitidibaccatum Bitter | O. A. Stevens 1465 | 14 Aug 1953 | United States of America | North Dakota | Barnes Co. Litchville | — |
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| Erysiphe communis (Wallr.) Fr. | O. A. Stevens s.n. | Sep 1914 | United States of America | — | Schafer | — |
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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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| 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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| Stereum gausapatum (Fr.) Fr. | O. A. Stevens 522 | 25 Sep 1921 | United States of America | North Dakota | Cass Co. Fargo. | — |
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| Stereum gausapatum (Fr.:Fr.) Fr. | O. A. Stevens s.n. | 25 Sep 1921 | United States of America | North Dakota | Cass Co. Fargo. | — |
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| Phellinus igniarius (L.:Fr.) Quél. | O. A. Stevens s.n. | Sep 1921 | United States of America | North Dakota | Cass Co. Fargo. | — |
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| Phellinus conchatus (Pers.:Fr.) Quél. | O. A. Stevens s.n. | 16 Oct 1921 | United States of America | North Dakota | Cass Co. Fargo. | — |
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| Phellinus conchatus (Pers.:Fr.) Quél. | O. A. Stevens s.n. | 16 Oct 1921 | United States of America | North Dakota | Cass Co. Fargo. | — |
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| Phellinus igniarius (L.:Fr.) Quél. | O. A. Stevens s.n. | s.d. | United States of America | North Dakota | Cass Co. 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. | 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 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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| Erysiphe martii Lév. | O. A. Stevens s.n. | 30 Sep 1923 | United States of America | North Dakota | Cass Co. | — |
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| Erysiphe polygoni DC. | O. A. Stevens s.n. | 25 Aug 1915 | United States of America | North Dakota | Cass Co. | — |
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| Erysiphe polygoni DC. | O. A. Stevens s.n. | 22 Sep 1914 | United States of America | North Dakota | Near Fargo | — |
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| Erysiphe polygoni DC. | O. A. Stevens | 22 Sep 1914 | United States of America | North Dakota | near Fargo | — |
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| Erysiphe polygoni DC. | O. A. Stevens | 25 Aug 1915 | United States of America | North Dakota | Near Fargo | — |
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| Microsphaera alni | O. A. Stevens s.n. | 27 Aug 1914 | United States of America | North Dakota | Wild Rice | — |
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| Microsphaera alni | O. A. Stevens s.n. | 27 Aug 1914 | United States of America | North Dakota | Wild Rice | — |
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| Microsphaera ravenelii Berk. | O. A. Stevens s.n. | 29 Aug 1914 | United States of America | North Dakota | Near Belfield | — |
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| Microsphaera ravenelii Berk. | O. A. Stevens s.n. | 01 Nov 1914 | United States of America | North Dakota | Cass Co. | — |
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| Microsphaera ravenelii Berk. | O. A. Stevens s.n. | 29 Aug 1914 | United States of America | North Dakota | Near Belfield | — |
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| Microsphaera ravenelii Berk. | O. A. Stevens s.n. | 01 Nov 1914 | United States of America | North Dakota | Fargo | — |
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| Phyllactinia fraxini (DC.) Fuss | O. A. Stevens s.n. | 17 Oct 1914 | United States of America | North Dakota | Near Fargo | — |
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| Phyllactinia suffulta (Rebent.) Sacc. | O. A. Stevens s.n. | 17 Oct 1914 | United States of America | North Dakota | Near Fargo | — |
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| Podosphaera oxyacanthae (DC.) de Bary | O. A. Stevens s.n. | 08 Sep 1914 | United States of America | North Dakota | Shafer | — |
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