Displaying 26 - 100 out of 4458 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | ||
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| Penstemon saxosorum Pennell | F. Tweedy 4299 | 04 Jul 1901 | United States of America | Colorado | Hahn's Peak | — | 651568 |
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| Rumex altissimus subsp. ellipticus (Greene) Á.Löve | F. Tweedy 473 | August 1897 | United States of America | Wyoming | Spread Creek, Teton Forest Reserve,… | — | 413054 |
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| Aragallus patens Rydb. | F. Tweedy 5164 | Jul 1902 | United States of America | Colorado | Boulder Co. Plains and foothills… | holotype | 5197 |
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| Stellaria umbellata Turcz. | F. Tweedy 158 | July 1898 | United States of America | Wyoming | Headwaters of Tongue River, Big… | — | 453109 |
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| Stellaria umbellata Turcz. | F. Tweedy 125 | August 1897 | United States of America | Wyoming | Gros Ventre River, Teton Forest… | — | 453110 |
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| Betula glandulosa Michx. | F. Tweedy 344 | Aug 1897 | United States of America | Wyoming | Black Rock Creek, Teton Forest… | — | 526240 |
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| Betula glandulosa Michx. | F. Tweedy 343 | Aug 1897 | United States of America | Wyoming | Spread Creek, Teton Forest Reserve,… | — | 526241 |
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| Erigeron laetevirens Rydb. | F. Tweedy 2005 | Jul 1899 | United States of America | Wyoming | Sheridan Co. Big Horn Mountains:… | type | 168470 |
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| Saxifraga claytoniifolia Canby ex Small | F. Tweedy 739 | May 1883 | United States of America | Oregon | The Dalles | holotype | 186174 |
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| Elatine rubella Rydb. | F. Tweedy 439 | Sep 1885 | United States of America | Wyoming | Muddy shore of Yellowstone Lake | isotype | 532819 |
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| Suaeda calceoliformis (Hook.) Moq. | F. Tweedy 352 | Aug 1897 | United States of America | Wyoming | Cement Creek, Teton Forest Reserve,… | — | 540336 |
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| Delphinium bicolor Nutt. | F. Tweedy 33 | Jun 1888 | United States of America | Montana | Beaverhead Co. Fide Canby | — | 353310 |
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| Pedicularis lunata Rydb. | F. Tweedy 2317 | Aug 1899 | United States of America | Wyoming | Sheridan Co. Big Horn Mountains. | holotype | 90902 |
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| Chenopodium chenopodioides (L.) Aellen | F. Tweedy 353 | Aug 1897 | United States of America | Wyoming | Black Rock Creek, Teton Forest… | — | 536900 |
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| Sagina saginoides (L.) H.Karst. | F. Tweedy 137 | August 1897 | United States of America | Wyoming | Buffalo Fork, Teton Forest Reserve,… | — | 446461 |
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| Stellaria longipes Goldie | F. Tweedy 123 | August 1897 | United States of America | Wyoming | Buffalo Fork, Teton Forest Reserve,… | — | 483017 |
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| Pinus flexilis E.James | F. Tweedy 2675 | Jul 1893 | United States of America | Wyoming | Sheridan Co. Big Horn Mountains | — | 61337 |
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| Pinus flexilis E.James | F. Tweedy 2675 | 01 Jul 1893 | United States of America | Wyoming | Sheridan Co. Big Horn Mountains | — | 61338 | ||
| Penstemon cyathophorus Rydb. | F. Tweedy 4307 | 09 Jul 1901 | United States of America | Colorado | Jackson Co. Colorado-Wyoming line. | holotype | 91062 |
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| Saxifraga oppositifolia L. | F. Tweedy 117 | Aug 1897 | United States of America | Wyoming | Sheep Mountains, northwestern Wyoming | — | 784150 |
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| Deyeuxia dubia Scribn. & Tweedy | F. Tweedy 248 | Aug 1884 | United States of America | — | Yellowstone Park | isotype | 380529 |
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| Atriplex odontoptera Rydb. | F. Tweedy 3302 | Sep 1900 | United States of America | Wyoming | Buffalo, N Wyoming. Alt. 4000-5000… | holotype | 6441 |
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| Eriogonum lagopus Rydb. | F. Tweedy 2624 | Sep 1899 | United States of America | Wyoming | Sheridan Co. Dayton | holotype | 323356 |
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| Stellaria longipes Goldie | F. Tweedy 126 | July 1897 | United States of America | Wyoming | Spread Creek, Teton Forest Reserve,… | — | 482850 |
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| Draba chrysantha var. hirtacaulis O.E.Schulz | F. Tweedy 142 | 20 Aug 1894 | United States of America | Colorado | San Miguel Co. Telluride | isolectotype | 185262 |
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| Plantago tweedyi A.Gray | F. Tweedy 452 | Aug 1885 | United States of America | — | Along East Fork of Yellowstone… | probable isotype | 278427 |
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| Poa subtrivialis Rydb. | F. Tweedy 2141 | Jul 1899 | United States of America | Wyoming | Sheridan Co. Big Horn Mountains | isotype | 431347 |
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| Picea pungens Engelm. | F. Tweedy 4550 | 10 Aug 1901 | United States of America | Wyoming | Carbon Co. Forks of Battle… | — | 30458 |
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| Dodecatheon uniflorum Rydb. | F. Tweedy 24 | Jun 1888 | United States of America | Montana | Beaverhead Co. | syntype | 329467 |
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| Dodecatheon uniflorum Rydb. | F. Tweedy 24 | Jun 1888 | United States of America | Montana | Beaverhead Co. Rock Creek | syntype fragment | 329468 |
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| Phlox collina Rydb. | F. Tweedy 154 | May 1888 | United States of America | Montana | Madison Co. | holotype | 336986 |
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| Panax trifolium L. | F. Tweedy | Apr 1879 | United States of America | New Jersey | Union Co. | — | 198913 |
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| Aconitum columbianum Nutt. subsp. columbianum | F. Tweedy 177 | August 1897 | United States of America | Wyoming | Spread Creek, Teton Forest Reserve,… | — | 483195 |
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| Desmodium tweedyi Britton | F. Tweedy s.n. | 1879 | United States of America | Texas | Tom Green Co. | type | 7641 |
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| Saxifraga adscendens L. | F. Tweedy 121 | Aug 1897 | United States of America | Wyoming | Yount's Peak. Teton Forest Reserve,… | — | 783809 |
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| Ranunculus inamoenus Greene var. inamoenus | F. Tweedy 170 | Aug 1897 | United States of America | Wyoming | Black Rock Creek, Teton Forest… | — | 494675 |
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| Ranunculus inamoenus Greene var. inamoenus | F. Tweedy 171A | Jul 1897 | United States of America | Wyoming | Mount Leidy, Teton Forest Reserve,… | — | 494676 |
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| Ranunculus inamoenus Greene var. inamoenus | F. Tweedy 171 | Aug 1897 | United States of America | Wyoming | Spread Creek, Teton Forest Reserve,… | — | 494677 |
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| Gilia spergulifolia Rydb. | F. Tweedy 576 | Jul 1898 | United States of America | Wyoming | Headwaters of Tongue River, Big… | holotype | 336889 |
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| Parnassia palustris var. parviflora (DC.) B.Boivin | F. Tweedy 3461 | Jul 1900 | United States of America | Wyoming | Buffalo | — | 783763 |
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| Parnassia palustris var. parviflora (DC.) B.Boivin | F. Tweedy 111 | Aug 1897 | United States of America | Wyoming | Black Rock Creek | — | 783771 |
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| Mahonia repens (Lindl.) G.Don | F. Tweedy 346 | Aug 1897 | United States of America | Wyoming | Spread Creek, Teton Forest Reserve,… | — | 00500384 |
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| Atriplex buxifolia Rydb. | F. Tweedy 2456 | Sep 1899 | United States of America | Wyoming | Sheridan Co. Dayton. | holotype | 6451 |
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| Gilia tweedyi Rydb. | F. Tweedy 4422 | 20 Jun 1901 | United States of America | Wyoming | Carbon Co. Encampment | type | 336904 |
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| Parnassia fimbriata K.D.König | F. Tweedy 110 | Aug 1897 | United States of America | Wyoming | Buffalo Fork, Northwestern Wyoming | — | 783717 |
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| Agoseris pubescens Rydb. | F. Tweedy 578 | 1897 | United States of America | Wyoming | Teton Forest reserve: Buffalo Fork | lectotype | 546692 |
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| Onosmodium molle var. occidentale (Mack.) I.M.Johnst. | F. Tweedy 3576 | 15 Jun 1900-15 Jul 1900 | United States of America | Wyoming | Sheridan Co. Between Sheridan and… | — | 21630 |
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| Onosmodium molle var. occidentale (Mack.) I.M.Johnst. | F. Tweedy 2096 | Sep 1899 | United States of America | Wyoming | Sheridan Co. Dayton | — | 21631 |
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| Onosmodium molle var. occidentale (Mack.) I.M.Johnst. | F. Tweedy 5216 | Jul 1902 | United States of America | Colorado | Boulder Co. Longmont | — | 21635 |
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| Erigeron poliospermus A.Gray | F. Tweedy s.n. | Jul 1883 | United States of America | Washington | Yakima region | syntype | 168520 |
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| Erigeron poliospermus A.Gray | F. Tweedy 922 | May 1883 | United States of America | Washington | Walla Walla region, Washington Territory | syntype | 168516 |
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| Pinus contorta var. latifolia Engelm. | F. Tweedy 3249 | 20 Jul 1900-15 Aug 1900 | United States of America | Wyoming | Eastern slope of the Big… | — | 49849 |
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| Pinus contorta var. latifolia Engelm. | F. Tweedy 3249 | 20 Jul 1900-15 Aug 1900 | United States of America | Wyoming | Eastern slope of the Big… | — | 49951 | ||
| Pinus contorta var. latifolia Engelm. | F. Tweedy 2670 | Jul 1899 | United States of America | Wyoming | Sheridan Co. Big Horn Mountains | — | 49841 |
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| Pinus contorta var. latifolia Engelm. | F. Tweedy 2670 | Jul 1899 | United States of America | Wyoming | Sheridan Co. Big Horn Mountains | — | 49883 | ||
| Cuscuta gracilis Rydb. | F. Tweedy 3492 | 15 Jun-15 Jul 1900 | United States of America | Wyoming | Rolling plains between Sheridan and… | type | 336628 |
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| Carduus griseus Rydb. | F. Tweedy 321 | Aug 1894 | United States of America | Colorado | Telluride | isotype | 163062 |
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| Hymenoxys acaulis var. glabra (A.Gray) K.L.Parker | F. Tweedy s.n. | Jun 1889 | United States of America | Montana | Livingston | — | 32137 |
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| Geranium nervosum Rydb. | F. Tweedy 494 | Jul 1897 | United States of America | Wyoming | Fish Creek, Teton Forest Reserve | lectotype | 373641 |
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| Silene acaulis (L.) Jacq. | F. Tweedy 141 | August 1897 | United States of America | Wyoming | Sheep Mountains, Teton Forest Reserve,… | — | 446581 |
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| Astragalus barrii Barneby | F. Tweedy 3156 | Sep 1900 | United States of America | Wyoming | Johnson Co. | — | 24783 |
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| Abronia arenaria Menzies ex Hook. | F. Tweedy 442 | Aug 1885 | United States of America | Wyoming | Yellowstone Park; mouth of Pelican… | holotype | 341986 |
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| Erigeron tweedyana Canby & Rose | F. Tweedy s.n. | Jun 1887 | United States of America | Montana | Park Co. | type | 168571 |
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| Erigeron tweedyana Canby & Rose | F. Tweedy s.n. | Jun 1889 | United States of America | Montana | Park Co. | isotype | 6988 |
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| Anemone multifida Poir. var. multifida | F. Tweedy 176 | July 1897 | United States of America | Wyoming | Spread Creek, Teton Forest Reserve,… | — | 483398 |
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| Minuartia obtusiloba (Rydb.) House | F. Tweedy 133 | August 1897 | United States of America | Wyoming | Sheep Mountains, Teton Forest Reserve,… | — | 446220 |
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| Minuartia obtusiloba (Rydb.) House | F. Tweedy 135 | August 1897 | United States of America | Wyoming | Gros Ventre River, Teton Forest… | — | 446222 |
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| Minuartia obtusiloba (Rydb.) House | F. Tweedy 136 | August 1897 | United States of America | Wyoming | Two-Gwo-Tee Pass, Teton Forest Reserve,… | — | 446223 |
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| Minuartia obtusiloba (Rydb.) House | F. Tweedy 134 | August 1897 | United States of America | Wyoming | Buffalo Fork, Teton Forest Reserve,… | — | 446219 |
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| Astragalus reventus A.Gray | F. Tweedy s.n. | 1889 | United States of America | Montana | Beaverhead Co. | — | 5364 |
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| Astragalus australis var. glabriusculus (Hook.) Isely | F. Tweedy 628 | Aug 1897 | United States of America | Wyoming | Mt. Leidy | — | 791852 |
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| Taxus canadensis Marshall | F. Tweedy s.n. | Aug 1879 | United States of America | New York | Hamilton Co. | — | 312842 |
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| Polygala tweedyi Britton | F. Tweedy s.n. | 1879 | United States of America | Texas | Tom Green Co. | holotype | 406822 |
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| Carduus pulcherrimus Rydb. | F. Tweedy 3048 | 20 Jul 1900-15 Aug 1900 | United States of America | Wyoming | Eastern slope of the Big… | holotype | 163083 |
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| Urtica dioica subsp. gracilis (Aiton) Selander | F. Tweedy 347 | Jul 1897 | United States of America | Wyoming | Fish Creek, Teton Forest Reserve | — | 500549 |
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