Displaying 1 - 25 out of 343 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. | P. Dowell 1510 | 08 Jun 1902 | United States of America | District of Columbia | Takoma | — |
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| Coleataenia anceps (Michx.) Soreng | P. Dowell 1645 | 08 Aug 1902 | United States of America | District of Columbia | Kenilworth, D. C. | — |
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| Poa annua L. | P. Dowell 1355 | 07 May 1902 | United States of America | District of Columbia | Smithsonian grounds | — |
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| Setaria parviflora (Poir.) Kerguélen | P. Dowell 1679 | 09 Aug 1902 | United States of America | District of Columbia | Hyattsville, Md. | — |
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| Carex aggregata Mack. | P. Dowell 1389 | 13 May 1902 | United States of America | District of Columbia | Washington Park. | — |
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| Carex lurida Wahlenb. | P. Dowell 1432 | 21 May 1902 | United States of America | District of Columbia | Anacostia River. | — |
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| Carex blanda Dewey | P. Dowell 1394 | 16 May 1902 | United States of America | District of Columbia | Rock Cr. | — |
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| Carex swanii (Fernald) Mack. | P. Dowell 1409 | 18 May 1902 | United States of America | District of Columbia | Takoma | — |
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| Carex tribuloides var. tribuloides | P. Dowell 1429 | 21 May 1902 | United States of America | District of Columbia | Anacostia River | — |
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| Dichanthelium polyanthes (Schult.) Mohlenbr. | P. Dowell 1576 | 29 Jun 1902 | United States of America | District of Columbia | Brookland. | — |
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| Eleocharis obtusa (Willd.) Schult. | P. Dowell 1598 | 06 Jul 1902 | United States of America | District of Columbia | Washington. Rock Creek | — |
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| Aristida oligantha Michx. | P. Dowell 1684 | 16 Aug 1902 | United States of America | District of Columbia | Rock Creek | — |
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| Lolium arundinaceum (Schreb.) Darbysh. | P. Dowell 1544 | 15 Jun 1902 | United States of America | District of Columbia | Congress Heights | — |
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| Cyperus strigosus L. | P. Dowell 1831 | 23 Aug 1903 | United States of America | District of Columbia | Takoma | — |
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| Dalea carnea (Michx.) Poir. var. carnea | P. Dowell 7602 | 17 Jul 1930 | United States of America | Florida | Volusia Co. Deep Creek, De… | — |
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| Agrostis perennans (Walter) Tuck. | P. Dowell 1678 | 09 Aug 1902 | United States of America | Maryland | Hyattsville. | — |
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| Agalinis obtusifolia Raf. | P. Dowell s.n. | 28 Aug 1910 | United States of America | Maryland | Lanham | — |
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| Paronychia canadensis (L.) Alph.Wood | P. Dowell 3166 | 13 Aug 1904 | United States of America | Maryland | Prince George's Co. | — |
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| Dryopteris bootii Underw. | P. Dowell 5332 | 12 Jul 1908 | United States of America | Maryland | Montgomery Co. | — |
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| Dryopteris bootii Underw. | P. Dowell 5332 | 12 Jul 1908 | United States of America | Maryland | Montgomery Co. | — |
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| Viola lanceolata subsp. lanceolata | P. Dowell 6466 | 14 Aug 1910 | United States of America | Maryland | Prince George's Co. | — |
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| Distichlis spicata (L.) Greene | P. Dowell 3307 | 27 Aug 1904 | United States of America | Maryland | Chesapeake Beach | — |
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| Symphyotrichum cordifolium (L.) G.L.Nesom | P. Dowell 3475b | 24 Sep 1904 | United States of America | New Jersey | New Orange | — |
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| Symphyotrichum cordifolium (L.) G.L.Nesom | P. Dowell 3475b | 24 Sep 1904 | United States of America | New Jersey | New Orange | — |
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| Symphyotrichum cordifolium (L.) G.L.Nesom | P. Dowell 3475c | 24 Sep 1904 | United States of America | New Jersey | New Orange | — |
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