Displaying 2526 - 2550 out of 2574 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Senecio atratus Greene | J. T. Howell 45347a | 14 Sep 1968 | United States of America | Utah | Garfield Co. At Bryce Point,… | — |
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| Eriogonum scabrellum Reveal | J. T. Howell 44889 | 07 Sep 1968 | United States of America | Utah | Grand Co. Clayey soil of… | — |
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| Mentzelia multiflora (Nutt.) A.Gray | J. T. Howell 44793 | 05 Sep 1968 | United States of America | Utah | San Juan Co. Rocky canyon… | — |
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| Penstemon newberryi var. rupicola Piper | J. T. Howell 7405 | 19 Jul 1931 | United States of America | Washington | Spokane Co. Near Reflevtion Lake,… | — |
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| Agoseris aurantiaca (Hook.) Greene var. aurantiaca | J. T. Howell 7536 | 23 Jul 1931 | United States of America | Washington | Clallam Co. Mt. Angeles | — |
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| Arnica latifolia Bong. | J. T. Howell 7529 | 23 Jul 1931 | United States of America | Washington | Clallam Co. Mt. Angeles | — |
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| Cirsium brevifolium Nutt. | J. T. Howell 28504 | s.d. | United States of America | Washington | Whitman Co. 4 miles north… | — |
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| Cirsium undulatum (Nutt.) Spreng. | J. T. Howell 28474 | 26 Jun 1952 | United States of America | Washington | Grant Co. Sun Lakes State… | — |
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| Dicranum scoparium Hedw. | J. T. Howell | 21 Jul 1931 | United States of America | Washington | Clallam Co. Lower slopes of… | — | ||||
| Mnium spinulosum Bruch & Schimp. | J. T. Howell s.n. | 19 Jul 1931 | United States of America | Washington | just below Nisqually Creek Bridge,… | — | ||||
| 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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| Aristida tenuifolia Hitchc. | J. T. Howell 8361 | 23 Mar 1932 | Mexico | — | Revillagigedo Islands: on ridge above… | isotype |
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| Bursera howellii Standl. | J. T. Howell 10244 | 04 Jul 1932 | Costa Rica | — | Port Parker | isotype |
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| Aristida vaginata Hitchc. | J. T. Howell 8448 | 29 Mar 1932 | Mexico | — | Revillagigedo Islands: north anchorage, Socorro… | isotype |
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| Clidemia novemnervia (DC.) Triana | J. T. Howell 10181 | 28 Jun 1932 | Costa Rica | — | Cocos Island, Wafer Bay. | — |
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| Bryopteris filicina (Sw.) Nees | J. T. Howell 212 | 09 May 1932 | — | — | Common on ground on slopes… | — |
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| Toxicodendron diversilobum (Torr. & A.Gray) Greene | J. T. Howell 30989 | 15 Mar 1956 | Mexico | — | — |
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| Anthoceros vegetans M.Howe | J. T. Howell 234 | s.d. | Ecuador | — | Galapagos Islands, Cocos Island | microslide from type |
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| Anthoceros vegetans M.Howe | J. T. Howell 234 | s.d. | Ecuador | — | Galapagos Islands, Cocos Island | microslide from type |
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| Anthoceros vegetans M.Howe | J. T. Howell 234 | s.d. | Ecuador | — | Galapagos Islands, Cocos Island | microslide from type |
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| Anthoceros vegetans M.Howe | J. T. Howell 234 | s.d. | Ecuador | — | Galapagos Islands, Cocos Island | microslide from type |
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| Anthoceros vegetans M.Howe | J. T. Howell 234 | s.d. | Ecuador | — | Galapagos Islands, Cocos Island | microslide from type |
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| Brachycereus nesioticus (K.Schum. ex B.L.Rob.) Backeb. | J. T. Howell 9631A | 1 Jun 1932 | Ecuador | — | Southeast side, Narbourough Island. Flora… | — |
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| Riccia sorocarpa Bisch. | J. T. Howell 145 | 14 Nov 1931 | Guadeloupe | — | — | |||||
| Riccia sorocarpa Bisch. | J. T. Howell 145 | 14 Nov 1931 | Guadeloupe | — | — |