Displaying 1 - 25 out of 999 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | ||
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| Uromyces acuminatus Arthur | E. B. Payson 2286 | 13 Jul 1896 | United States of America | Wyoming | Ranchester | — | 3433660 |
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| Penstemon moffatii Eastw. | E. B. Payson 257 | 27 Apr 1914 | United States of America | Colorado | Naturita | photo of type | 609473 | ||
| Penstemon paysonii Pennell | E. B. Payson 257 | 27 Apr 1914 | United States of America | Colorado | Montrose Co. Naturita | isotype | 1477345 |
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| Puccinia thlaspeos C.Schub. | E. B. Payson 291 | 11 May 1914 | United States of America | Colorado | Montrose Co. | — | 3448306 |
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| Puccinia thlaspeos C.Schub. | E. B. Payson 291 | 11 May 1914 | United States of America | Colorado | Montrose Co. | — | 3448307 |
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| Penstemon cyanocaulis Payson | E. B. Payson 348 | 25 May 1914 | United States of America | Colorado | Montrose Co. Naturita, southwestern Colorado | isotype | 1477365 |
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| Gratiola neglecta Torr. | E. B. Payson 2809 | 19 Jul 1914 | United States of America | Wyoming | Near Rock River | — | 3283834 |
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| Penstemon retrorsus Payson | E. B. Payson 673 | 15 Jun 1915 | United States of America | Colorado | Near Montrose | holotype | 130495 |
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| Penstemon retrorsus Payson | E. B. Payson 673 | 15 Jun 1915 | United States of America | Colorado | Near Montrose | isotype | 1477348 |
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| Apocynum androsaemifolium L. | J. F. Macbride | E. B. Payson | 05 Jul 1916 | United States of America | Idaho | Blaine Co. Martin | — | 00947589 |
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| Penstemon watsonii A.Gray | E. B. Payson s.n. | 10 Jul 1917 | United States of America | Colorado | Near top of Gunnison Canyon,… | — | 763606 |
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| Penstemon comarrhenus A.Gray | E. B. Payson 1057 | 11 Jul 1917 | United States of America | Colorado | Bostwick Park, 15 miles east… | — | 584404 |
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| Castilleja sulphurea Rydb. | E. B. Payson 1072 | 14 Jul 1917 | United States of America | Colorado | Delta Co. | — | 3261632 |
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| Castilleja occidentalis Torr. | E. B. Payson 1099 | 26 Jul 1917 | United States of America | Colorado | Dolores Co. just above timberline,… | — | 3259767 |
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| Castilleja rhexifolia Rydb. | E. B. Payson 1100 | 26 Jul 1917 | United States of America | Colorado | Dolores Co. Subalpine near Rico | — | 3260877 |
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| Herpotrichia nigra Hartig | E. B. Payson s.n. | 26 Jul 1917 | United States of America | Colorado | Rico. | — | 2985694 |
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| Penstemon linarioides subsp. coloradoensis (A.Nelson) D.D.Keck | E. B. Payson 1129 | 30 Jul 1917 | United States of America | Colorado | Mesa Verde, south of Cortez | — | 608489 |
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| Gymnosporangium inconspicuum Kern | E. B. Payson s.n. | 01 Sep 1917 | United States of America | Colorado | Glenwood Springs. | — | 3010623 |
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| Gymnosporangium inconspicuum Kern | E. B. Payson s.n. | 01 Sep 1917 | United States of America | Colorado | Glenwood Springs. | — | 3010635 |
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| Castilleja flava S.Watson | E. B. Payson 1989 | 11 Jun 1920 | United States of America | Idaho | Fremont Co. Base to summit… | — | 02393930 |
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| Penstemon cleburnei M.E.Jones | E. B. Payson 1691 | 17 Jun 1920 | United States of America | Wyoming | Carbon Co. Hanna | — | 583921 |
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| Astragalus simplicifolius (Nutt.) A.Gray | E. B. Payson 1694 | 17 Jun 1920 | United States of America | Wyoming | Carbon Co. Hanna | — | 01282880 |
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| Agoseris parviflora (Nutt.) D.Dietr. | E. B. Payson 1686 | 17 Jun 1920 | United States of America | Wyoming | Carbon Co. Dry Hills, Hanna | — | 1877138 |
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| Erigeron engelmannii A.Nelson var. engelmannii | E. B. Payson 1684 | 17 Jun 1920 | United States of America | Wyoming | Carbon Co. Hanna; dry hills | — | 2088700 |
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| Descurainia sophia (L.) Webb ex Prantl | E. B. Payson 1695 | 17 Jun 1920 | United States of America | Wyoming | Carbon Co. | — | 3183411 |
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