Displaying 1 - 67 out of 67 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | ||
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| Agrostis mertensii Trin. | E. F. Williams s.n. | 14 Jul 1895 | United States of America | New Hampshire | Mike's house. Mt. Washington. | — | 1556475 |
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| Arnica lonchophylla Greene | E. F. Williams s.n. | 25 Jul 1905 | Canada | Quebec | Gaspé. Cold walls of Percé… | — | 1882272 |
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| Astragalus eucosmus B.L.Rob. | E. F. Williams s.n. | 19 Jul 1902 | United States of America | Maine | Aroostook Co. Valley of Aroostook… | — | 01249084 |
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| Betula alba L. | E. F. Williams | 03 Aug 1902 | Canada | Quebec | Témiscouata Reg. Co. Mun. crest… | — | 2475318 |
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| Betula papyrifera Marshall | E. F. Williams s.n. | — | Canada | Quebec | Rimouski-Neigette Reg. Co. Mun. Rimouski. | — | 2477023 |
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| Carex | E. F. Williams 169 | 18 Jul 1902 | United States of America | Maine | Aroostook Co. Terrace of Aroostook… | — | 2333464 |
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| Carex deweyana var. collectanea Fernald | E. F. Williams s.n. | 12 Jul 1905-15 Jul 1905 | Canada | Quebec | Bonaventure Reg. Co. Mun. Grand… | isotype | 345517 |
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| Carex scirpoidea Michx. | E. F. Williams s.n. | 10 Jul 1895 | United States of America | New Hampshire | Mt. Washington | — | 2302328 |
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| Carex sterilis Willd. | E. F. Williams 115 | 15 Jul 1902 | United States of America | Maine | Aroostook Co. | — | 2304870 |
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| Carex sterilis Willd. | E. F. Williams 492 | 15 Jul 1902 | United States of America | Maine | Aroostook Co. | — | 2304871 |
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| Carex tenuiflora Wahlenb. x C. trisperma Dewey | E. F. Williams 110 | 19 Jul 1902 | United States of America | Maine | Aroostook Co. In swamp, Fort… | — | 02307001 |
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| Carex tenuiflora Wahlenb. x C. trisperma Dewey | E. F. Williams 110 | 19 Jul 1902 | United States of America | Maine | Aroostook Co. In swamp, Fort… | — | 2307002 |
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| Cynoglossopsis boreale Fernald | E. F. Williams s.n. | 17 Jul 1905 | Canada | Quebec | Bonaventure Reg. Co. Mun. Little… | syntype | 335200 |
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| Cynoglossum boreale Fernald | E. F. Williams s.n. | 17 Jul 1905 | Canada | Quebec | Bonaventure Reg. Co. Mun. Little… | isolectotype | 04206131 | ||
| Cystopteris fragilis (L.) Bernh. | E. F. Williams s.n. | 24 Jul 1905 | Canada | Quebec | Gaspé, Percé, Mt. Ste. Anne | — | 3799421 |
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| Diphasiastrum sabinifolium (Willd.) Holub | E. F. Williams 12 | 11 Aug 1901 | United States of America | Maine | Aroostook Co. | — | 3505141 |
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| Diphasiastrum sabinifolium (Willd.) Holub | E. F. Williams 12 | 11 Aug 1901 | United States of America | Maine | Fort Kent. | — | 3505143 |
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| Diphasiastrum sitchense (Rupr.) Holub | E. F. Williams 11 | 11 Aug 1901 | United States of America | Maine | Aroostook Co. | — | 3505197 |
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| Diphasiastrum sitchense (Rupr.) Holub | E. F. Williams 11 | 11 Aug 1901 | United States of America | Maine | Aroostook Co. | — | 3505200 |
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| Eleocharis ovata (Roth) Roem. & Schult. | E. F. Williams 55a | 12 Aug 1901 | United States of America | Maine | Aroostook Co. Muddy roadside, Fort… | — | 02610115 |
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| Eleocharis ovata (Roth) Roem. & Schult. | E. F. Williams s.n. | 12 Aug 1901 | United States of America | Maine | Fort Kent. | — | 2825543 |
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| Eleocharis ovata (Roth) Roem. & Schult. | E. F. Williams s.n. | 26 Aug 1893 | United States of America | Maine | Fort Kent. | — | 2825581 |
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| Euphrasia oakesii Wettst. | E. F. Williams 61 | 4 Aug 1901 | United States of America | New Hampshire | Coös Co. Head of Oakes… | — | 3283010 |
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| Euphrasia oakesii Wettst. | E. F. Williams 61 | 4 Aug 1901 | United States of America | New Hampshire | Coös Co. Head of Oakes… | — | 3283011 |
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| Euphrasia oakesii Wettst. | E. F. Williams 61 | 4 Aug 1901 | United States of America | New Hampshire | Coös Co. Head of Oakes… | — | 3283012 |
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| Euphrasia officinalis L. | E. F. Williams 62 | 12 Aug 1901 | United States of America | Maine | Aroostook Co. | — | 3283056 |
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| Euphrasia officinalis L. | E. F. Williams s.n. | 12 Aug 1901 | United States of America | Maine | Aroostook Co. | — | 3283057 |
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| Euphrasia officinalis L. | E. F. Williams s.n. | 12 Aug 1901 | United States of America | Maine | Aroostook Co. | — | 3283058 |
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| Euphrasia williamsii B.L.Rob. | E. F. Williams 60 | 05 Aug 1901 | United States of America | New Hampshire | Alpine Garden, Mt. Washington. | isotype | 68374 |
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| Euphrasia williamsii B.L.Rob. | E. F. Williams 60 | 05 Aug 1901 | United States of America | New Hampshire | Alpine Garden, Mt. Washington. | isotype | 68375 |
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| Euphrasia williamsii B.L.Rob. | E. F. Williams 60 | 05 Aug 1901 | United States of America | New Hampshire | Alpine Garden, Mt. Washington. | isotype | 68376 |
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| Euphrasia williamsii B.L.Rob. | E. F. Williams 60 | 05 Aug 1901 | United States of America | New Hampshire | Alpine Garden, Mt. Washington. | isotype | 68377 |
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| Galium labradoricum (Wiegand) Wiegand | E. F. Williams s.n. | 19 Jul 1902 | United States of America | Maine | Aroostook Co. | — | 3457964 |
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| Galium tinctorium L. | E. F. Williams s.n. | 17 Jul 1902 | United States of America | Maine | Aroostook Co. Valley of the… | — | 3468944 |
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| Glyceria striata (Lam.) Hitchc. | E. F. Williams s.n. | 15 Jul 1902 | United States of America | Maine | Aroostook Co. Fort Fairfield | — | 1724223 |
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| Halenia deflexa (Sm.) Griseb. | E. F. Williams s.n. | 09 Aug 1901 | United States of America | Maine | Aroostook Co. | — | 3581911 |
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| Halenia deflexa (Sm.) Griseb. | E. F. Williams s.n. | 09 Aug 1901 | United States of America | Maine | Aroostook Co. | — | 3581922 |
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| Halenia deflexa (Sm.) Griseb. | E. F. Williams s.n. | 09 Aug 1901 | United States of America | Maine | Aroostook Co. | — | 3581932 |
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| Juncus tenuis var. anthelatus Wiegand | E. F. Williams s.n. | 13 Jul 1908 | United States of America | Vermont | Addison Co. Bread Loaf Inn | — | 2402152 |
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| Juncus tenuis var. williamsii Fernald | E. F. Williams s.n. | August 1902 | Canada | Quebec | Brookside, Todousac. | — | 2402561 |
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| Juncus trifidus L. | E. F. Williams 179 | 26 Jul 1903 | United States of America | New Hampshire | Upper cone of Mt. Washington | — | 2403132 |
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| Juncus trifidus L. | E. F. Williams 179 | 26 Jul 1903 | United States of America | New Hampshire | Upper cone of Mt. Washington | — | 2403144 |
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| Juncus trifidus L. | E. F. Williams s.n. | 14 Jul 1893 | United States of America | New Hampshire | Coös Co. Crawford Path, Mt.… | — | 2403148 |
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| Juncus vaseyi Engelm. | E. F. Williams s.n. | 25 Jul 1902 | Canada | New Brunswick | Gloucester Co. | — | 2403490 |
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| Lobelia kalmii L. | E. F. Williams s.n. | 19 Aug 1901 | United States of America | Maine | Aroostook Co. Caribou Bog | — | 3748073 |
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| Lycopodium lagopus (Laest. ex Hartm.) Zinserl. ex Kuzen. | E. F. Williams 810 | 07 Aug 1901 | United States of America | New Hampshire | near "Cape Horn," slopes of… | — | 3329827 |
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| Minuartia groenlandica (Retz.) Ostenf. | E. F. Williams 213 | 25 Jul 1903 - 26 Jul 1903 | United States of America | New Hampshire | Coös Co. Mt. Washington. | — | 3267591 |
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| Muhlenbergia richardsonis (Trin.) Rydb. | E. F. Williams 57 | 14 Aug 1901 | United States of America | Maine | Aroostook Co. Beach of Aroostook… | — | 1741323 |
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| Muhlenbergia richardsonis (Trin.) Rydb. | E. F. Williams 57 | 14 Aug 1901 | United States of America | Maine | Aroostook Co. Fort Fairfield, Arrostook… | — | 1741328 |
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| Muhlenbergia richardsonis (Trin.) Rydb. | E. F. Williams s.n. | 14 Aug 1901 | United States of America | Maine | Aroostook Co. Gravelly beach of… | — | 1741329 |
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| Oncophorus wahlenbergii Brid. | E. F. Williams s.n. | Jul 1902 | United States of America | Maine | Aroostook Co. Cedar Swamp, Fort… | — | 02704635 | ||
| Philonotis fontana (Hedw.) Brid. | E. F. Williams | 29 Jul 1900 | United States of America | Massachusetts | Between Allagash Plantation & St.… | — | 438973 | ||
| Platanthera aquilonis Sheviak | E. F. Williams s.n. | 11 Jul 1902 | United States of America | Maine | Aroostook Co. Valley of Aroostook… | — | 4118610 |
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| Poa fernaldiana Nannf. | E. F. Williams 123 | 24 Jul 1903 | United States of America | New Hampshire | At the summit of Mt.… | isotype | 431246 |
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| Poa fernaldiana Nannf. | E. F. Williams 123 | 24 Jul 1903 | United States of America | New Hampshire | At the summit of Mt.… | isotype | 431247 |
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| Rhinotropis lindheimeri var. parvifolia (Wheelock) J.R.Abbott | E. F. Williams s.n. | 15 Jul 1902 | United States of America | Maine | Aroostook Co. valley of the… | — | 2583099 |
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| Rorippa sylvestris (L.) Besser | E. F. Williams s.n. | 07 Jul 1910 | United States of America | New Hampshire | Grafton Co. | — | 2406465 |
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| Rumex britannica L. | E. F. Williams s.n. | 24 Jul 1902 | Canada | New Brunswick | Gloucester Co. Tête-à-Gouche R. | — | 2407485 |
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| Schoenoplectus purshianus (Fernald) M.T.Strong | E. F. Williams 26 | 07 Sep 1901 | United States of America | Massachusetts | Norfolk Co. Sandy shore of… | — | 02609945 |
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| Scirpus debilis var. williamsii Fernald | E. F. Williams 26 | 07 Sep 1901 | United States of America | Massachusetts | Massapoag Lake, Sharon | isotype | 51635 |
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| Scirpus debilis var. williamsii Fernald | E. F. Williams 26 | 07 Sep 1901 | United States of America | Massachusetts | Massapoag Lake, Sharon | possible type | 51636 |
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| Scirpus debilis var. williamsii Fernald | E. F. Williams 26 | 07 Sep 1901 | United States of America | Massachusetts | Massapoag Lake, Sharon | isotype | 51634 |
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| Symphyotrichum boreale (Torr. & A.Gray) Á.Löve & D.Löve | E. F. Williams 18 | 15 Aug 1901 | United States of America | Maine | Arrostook River, Fort Fairfield | — | 1832650 |
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| Symphyotrichum boreale (Torr. & A.Gray) Á.Löve & D.Löve | E. F. Williams 18 | 15 Aug 1901 | United States of America | Maine | Aroostook Co. Aroostook River, Fort… | — | 1832741 |
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| Symphyotrichum boreale (Torr. & A.Gray) Á.Löve & D.Löve | E. F. Williams 18 | 15 Aug 1901 | United States of America | Maine | Aroostook River, Fort Fairfield | — | 1832752 |
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| Taxus canadensis Marshall | E. F. Williams s.n. | 23 Jun 1895 | United States of America | Massachusetts | Norfolk Co. Purgatory swamp, Norwood | — | 17510 |
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| Tetraplodon mnioides (Hedw.) Bruch & Schimp. | E. F. Williams | 10 Jul 1895 | United States of America | New Hampshire | Mt. Washington | — | 657409 |