Displaying 1 - 25 out of 2404 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Glycyrrhiza lepidota Pursh | J. T. Howell s.n. | 1877 | United States of America | — | Columbia River | — |
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| Lupinus arbustus var. arbustus | J. T. Howell s.n. | June 1879 | United States of America | Washington | Klickitat Co. Klickitat, Washington Territory. | — |
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| Sedum spathulifolium Hook. | J. T. Howell s.n. | Jun 1880 | United States of America | Oregon | Western Oregon | — |
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| Lupinus arbustus var. arbustus | J. T. Howell s.n. | June 1880 | United States of America | — | Dry prairies. | — |
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| Lupinus arbustus var. arbustus | J. T. Howell s.n. | June 1880 | United States of America | — | Dry prairies. | — |
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| Triteleia bridgesii (S.Watson) Greene | J. T. Howell s.n. | 08 Jun 1884 | United States of America | Oregon | Coast Mountains | — |
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| Plagiobothrys fulvus (Hook. & Arn.) I.M.Johnst. | J. T. Howell s.n. | 24 Jun 1884 | United States of America | Oregon | Grant's Pass. | — |
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| Allium tolmiei var. tolmiei | J. T. Howell s.n. | May 1885 | United States of America | Oregon | Trout Creek, Blue Mountains. | — |
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| Sedum stenopetalum Pursh | J. T. Howell s.n. | 15 Jun 1886 | United States of America | Oregon | Sauvie's Island | — |
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| Maianthemum dilatatum (Alph.Wood) A.Nelson & J.F.Macbr. | J. T. Howell s.n. | May 1887 | United States of America | Oregon | St. Henlen | — |
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| Plagiobothrys fulvus (Hook. & Arn.) I.M.Johnst. | J. T. Howell s.n. | 05 May 1887 | United States of America | Oregon | Umpqua Valley. | — |
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| Plagiobothrys fulvus (Hook. & Arn.) I.M.Johnst. | J. T. Howell s.n. | 05 May 1887 | United States of America | Oregon | Umpqua Valley. | — |
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| Pellaea brachyptera (T.Moore) Baker | J. T. Howell s.n. | 05 Jul 1887 | United States of America | Oregon | Top of Deer Creek Mts. | — |
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| Hastingsia serpentinicola Becking | J. T. Howell s.n. | 05 Jul 1887 | United States of America | Oregon | Top of Deer Creek Mountains | — |
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| Cyperus aristatus Rottb. | J. T. Howell s.n. | 14 Jul 1887 | United States of America | Oregon | Grant's Pass. | — |
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| Plagiobothrys shastensis Greene ex A.Gray | J. T. Howell 1382 | May 1889 | United States of America | Oregon | Grants Pass. | — |
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| Lupinus arbustus var. arbustus | J. T. Howell 1341 | 10 May 1889 | United States of America | Oregon | Woodville. | — |
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| Plagiobothrys shastensis Greene ex A.Gray | J. T. Howell s.n. | May 1891 | United States of America | Oregon | Grant's Pass. | — |
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| Vaccinium ovalifolium Sm. | J. T. Howell s.n. | May 1891 | United States of America | California | Cascade Mountains | — |
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| Isoetes howellii Engelm. | J. T. Howell 1521 | 03 Jul 1891 | United States of America | Oregon | Hood River | — |
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| Lupinus densiflorus var. densiflorus | J. T. Howell 1004 | 09 May 1925 | United States of America | California | Merced Co. Plains SW of… | — |
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| Symphyotrichum chilense (Nees) G.L.Nesom | J. T. Howell 1578 | 28 Nov 1925 | United States of America | California | Solano Co. Cordelia | — |
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| Arctostaphylos tomentosa (Pursh) Lindl. | J. T. Howell 1652 | 28 Feb 1926 | United States of America | California | Marin Co. Rock Spring Trail,… | — |
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| Salix exigua subsp. melanopsis (Nutt.) Cronquist | J. T. Howell 2031 | 13 Jun 1926 | United States of America | California | Stanislaus Co. Knight's Ferry. | — |
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| Astraeus hygrometricus (Pers.) Morgan | J. T. Howell s.n. | 17 Jun 1926 | United States of America | California | Lake Tahoe | — |
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