Displaying 1 - 25 out of 2574 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Solidago missouriensis Nutt. var. missouriensis | J. T. Howell 7843 | 20 Aug 1931 | Canada | Alberta | 4 miles south of Calgary | — |
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| Sphaeralcea rusbyi A.Gray var. rusbyi | J. T. Howell 26474 | 23 May 1950 | United States of America | Arizona | Coconino Co. Havasu Canyon, Grand… | — |
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| Sphaeralcea parvifolia A.Nelson | J. T. Howell 26475 | 23 May 1950 | United States of America | Arizona | Coconino Co. Grand Canyon National… | — |
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| Carex specuicola J.T.Howell | J. T. Howell 24609 | 23 Jun 1948 | United States of America | Arizona | Coconino Co. Near Inscription House | type | ||||
| Astragalus humistratus var. tenerrimus M.E.Jones | J. T. Howell s.n. | 13 Sep 1968 | United States of America | Arizona | Coconino Co. Kaibab Plateau, 13.4… | — |
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| Astragalus subcinereus A.Gray | J. T. Howell 45271 | 13 Sep 1968 | United States of America | Arizona | Coconino Co. Kaibab Plateau; 13.4… | — |
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| Astragalus humistratus var. humivagans (Rydb.) Barneby | J. T. Howell s.n. | 11 Sep 1968 | United States of America | Arizona | Coconino Co. 3.5 miles from… | — |
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| Bouteloua barbata Lag. | J. T. Howell 45028 | 10 Sep 1968 | United States of America | Arizona | Navajo Co. Dune area, 7… | — |
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| Juncus confusus Coville | J. T. Howell 45259 | 13 Sep 1968 | United States of America | Arizona | Coconino Co. Kaibab Plateau; Entrance… | — |
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| Cirsium wheeleri (A.Gray) Petr. | J. T. Howell 45060 | 11 Sep 1968 | United States of America | Arizona | Coconino Co. 3.5 mi. from… | — |
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| Erigeron oreophilus Greenm. | J. T. Howell 45122 | 11 Sep 1968 | United States of America | Arizona | Coconino Co. San Francisco Mountains,… | — |
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| Phacelia perityloides var. laxiflora (J.T.Howell) Cronquist | J. T. Howell 26440 | 23 May 1950 | United States of America | Arizona | Coconino Co. Havasu Canyon, Grand… | — |
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| Zinnia grandiflora Nutt. | J. T. Howell 45226 | 12 Sep 1968 | United States of America | Arizona | Coconino Co. Wupatki Naitonal Monument,… | — |
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| Stanleya pinnata (Pursh) Britton | J. T. Howell 26527 | 25 May 1950 | United States of America | Arizona | Coconino Co. Havasu Canyon, Grand… | — |
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| Lithospermum multiflorum Torr. ex A.Gray | J. T. Howell 45062 | 11 Sep 1968 | United States of America | Arizona | Coconino Co. 3.5 miles from… | — |
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| Plagiobothrys scouleri var. penicillatus (Greene) Cronquist | J. T. Howell 45131 | 11 Sep 1968 | United States of America | Arizona | Coconino Co. Strand of reservoir,… | — |
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| Chenopodium fremontii S.Watson | J. T. Howell 45215 | 12 Sep 1968 | United States of America | Arizona | Coconino Co. 8.5 miles from… | — |
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| Kochia scoparia (L.) Schrad. | J. T. Howell 45235 | 12 Sep 1968 | United States of America | Arizona | Coconino Co. Entrance road to… | — |
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| Salsola collina Pall. | J. T. Howell 5167 | 11 Sep 1968 | United States of America | Arizona | Coconino Co. Northern suburb of… | — |
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| Eriogonum wetherillii Eastw. | J. T. Howell 45031 | 10 Sep 1968 | United States of America | Arizona | Navajo Co. Near Merrick Butte,… | — |
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| Sphaeralcea fendleri A.Gray | J. T. Howell 26476 | 23 May 1950 | United States of America | Arizona | Coconino Co. Havasu Canyon, Grand… | — |
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| Phacelia serrata J.W.Voss | J. T. Howell 45184 | 12 Sep 1968 | United States of America | Arizona | Coconino Co. Sunset Crater National… | — |
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| Blepharoneuron tricholepis (Torr.) Nash | J. T. Howell 45090 | 11 Sep 1968 | United States of America | Arizona | Coconino Co. 3.5 miles from… | — |
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| Hilaria jamesii (Torr.) Benth. | J. T. Howell 45019 | 10 Sep 1968 | United States of America | Arizona | Navajo Co. 7 miles southwest… | — |
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| Muhlenbergia minutissima (Steud.) Swallen | J. T. Howell 45127 | 11 Sep 1968 | United States of America | Arizona | Coconino Co. Strand of reservoir,… | — |
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