Displaying 1 - 50 out of 503 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Erigeron annuus (L.) Pers. | C. O. Grassl 3032 | 12 Aug 1922 | United States of America | Michigan | Menominee Co. embankment of new… | — |
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| Carex | C. O. Grassl 8007 | 15 Sep 1926 | Canada | Ontario | The region between Lake Superior… | — |
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| Clematis pitcheri Torr. & A.Gray var. pitcheri | C. O. Grassl 3 | 06 Jul 1930 | United States of America | New Mexico | Eddy Co. Dark Canyon, Rocky… | — |
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| Senna roemeriana (Scheele) H.S.Irwin & Barneby | C. O. Grassl 21 | 08 Jul 1930 | United States of America | New Mexico | Eddy Co. Dark Cañon, Rocky… | — |
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| Bidens bigelovii A.Gray ex Torr. | C. O. Grassl 48 | 09 Jul 1930 | United States of America | New Mexico | Eddy Co. Dark Cañon, Rocky… | — |
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| Solidago canadensis var. scabra Torr. & A.Gray | C. O. Grassl 77 | 12 Jul 1930 | United States of America | New Mexico | Eddy Co. Dark Cañon, Rocky… | — |
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| Physalis hederifolia A.Gray | C. O. Grassl 193 | 26 Jul 1930 | United States of America | Texas | Culberson Co. vicinity of Frijole… | — |
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| Helianthus rigidus var. subrhomboideus | C. O. Grassl 189 | 01 Aug 1930 | United States of America | Texas | Culberson Co. Vicinity of Frijole… | — |
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| Ipomopsis aggregata subsp. texana (Greene) Shinners | C. O. Grassl 192 | 04 Aug 1930 | United States of America | Texas | Culberson Co. on flats, vicinity… | — |
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| Mentzelia multiflora (Nutt.) A.Gray | C. O. Grassl 172 | 05 Aug 1930 | United States of America | Texas | Culberson Co. near foot of… | — |
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| Rhus copallinum var. lanceolata A.Gray | C. O. Grassl 174 | 10 Aug 1930 | United States of America | Texas | Culberson Co. Vicinity of Frijole… | — |
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| Calamagrostis neglecta subsp. inexpansa (A.Gray) Tzvelev | C. O. Grassl 4431 | 04 Jul 1931 | Canada | Ontario | Beach of Chene Island. | — |
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| Juncus arcticus subsp. littoralis (Engelm.) Hultén | C. O. Grassl 4405 | 04 Jul 1931 | United States of America | Michigan | Beach of Round Island. | — |
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| Aralia hispida Vent. | C. O. Grassl 470 | 05 Jul 1931 | Canada | Ontario | Goulais Bay, S of Cranberry… | — |
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| Ilex verticillata (L.) A.Gray | C. O. Grassl 999 | 07 Jul 1931 | Canada | Ontario | On swampy beach at Goulais… | — |
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| Osmunda regalis L. | C. O. Grassl 1071 | 20 Jul 1931 | Canada | Ontario | Leach Island, Algoma | — |
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| Thelypteris phegopteris (L.) Sloss. | C. O. Grassl 1014 | 24 Jul 1931 | Canada | Ontario | Brule Harbor | — |
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| Thelypteris phegopteris (L.) Sloss. | C. O. Grassl 1014 | 24 Jul 1931 | Canada | Ontario | Brule Harbor | — |
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| Juncus bufonius L. | C. O. Grassl 4404 | 26 Jul 1931 | Canada | Ontario | Near Michipicoten Hbr. | — |
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| Woodsia ilvensis (L.) R.Br. | C. O. Grassl 1061 | 26 Jul 1931 | Canada | Ontario | Michipicoten Harbor | — |
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| Erigeron philadelphicus L. | C. O. Grassl 808 | 27 Jul 1931 | Canada | Ontario | Algoma Distr. on sandy bank… | — |
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| Juncus brevicaudatus (Engelm.) Fernald | C. O. Grassl 4400 | 30 Jul 1931 | Canada | Ontario | Caribou Island | — |
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| Aralia hispida Vent. | C. O. Grassl 469 | 30 Jul 1931 | Canada | Ontario | Caribou I | — |
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| Oclemena nemoralis (Aiton) Greene | C. O. Grassl 826 | 30 Jul 1931 | Canada | Ontario | Caribou Island | — |
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| Calamagrostis canadensis (Michx.) P.Beauv. | C. O. Grassl 4733 | 31 Jul 1931 | Canada | Ontario | Northerneastern Lake Superior. | — |
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| Calamagrostis canadensis (Michx.) P.Beauv. | C. O. Grassl 4443 | 01 Aug 1931 | Canada | Ontario | On beach of [Quebec] Har.… | — |
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| Calamagrostis canadensis (Michx.) P.Beauv. | C. O. Grassl 4432 | 08 Aug 1931 | Canada | Ontario | Island east of [Ja canadierre… | — |
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| Calamagrostis canadensis (Michx.) P.Beauv. | C. O. Grassl 4445 | 09 Aug 1931 | Canada | Ontario | Near Otter Head. | — |
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| Calamagrostis neglecta subsp. inexpansa (A.Gray) Tzvelev | C. O. Grassl 4436 | 12 Aug 1931 | Canada | Ontario | On island in Heron Bay. | — |
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| Cassiope hypnoides (L.) D.Don | C. O. Grassl 730 | 14 Aug 1931 | Canada | Ontario | Islands and shore of northeastern… | — |
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| Chara aspera Willd. | C. O. Grassl 6766 | 20 Aug 1931 | United States of America | Michigan | Isle Royal, Richie Lake | — |
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| Nitella clavata Kütz. | C. O. Grassl 6765 | 20 Aug 1931 | United States of America | Michigan | Isle Royal, Richie Lake | — |
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| Characeae | C. O. Grassl 6765 | 20 Aug 1931 | United States of America | Michigan | Isle Royal, Richie Lake | — | ||||
| Abies balsamea (L.) Mill. | C. O. Grassl 1155 | 25 Aug 1931 | United States of America | Michigan | Siskiwit Bay, Isle Royal | — |
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| Salix nigra Marshall | C. O. Grassl 5488 | 22 May 1932 | United States of America | Michigan | Washtenaw Co. Arboretum | — |
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| Aralia nudicaulis L. | C. O. Grassl 4815 | 22 May 1932 | United States of America | Michigan | Washtenaw Co. in Arboretum | — |
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| Erigeron philadelphicus L. | C. O. Grassl 3844 | 30 May 1932 | United States of America | Michigan | Washtenaw Co. Ann Arbor; open… | — |
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| Erigeron pulchellus Michx. | C. O. Grassl 3841 | 30 May 1932 | United States of America | Michigan | Washtenaw Co. Ann Arbor; open… | — |
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| Carex blanda Dewey | C. O. Grassl 3826 | 30 May 1932 | United States of America | Michigan | Washtenaw Co. | — |
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| Cornus alternifolia L.f. | C. O. Grassl 3860 | 30 May 1932 | United States of America | Michigan | Washtenaw Co. | — |
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| Carya ovata (Mill.) K.Koch | C. O. Grassl 4827 | 08 Jun 1932 | United States of America | Michigan | Washtenaw Co. Ann Arbor; Arboretum. | — |
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| Butomus umbellatus L. | C. O. Grassl 5110 | 29 Jun 1932 | United States of America | Michigan | Wayne Co. The Detroit River,… | — |
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| Rorippa palustris subsp. hispida (Desv.) Jonsell | C. O. Grassl 5997 | 29 Jun 1932 | United States of America | Michigan | Wayne Co. Bank of the… | — |
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| Viburnum opulus L. | C. O. Grassl 5762 | Jul 1932 | Canada | Ontario | in moist woods near Providence… | — |
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| Erigeron philadelphicus L. | C. O. Grassl 5304 | 07 Jul 1932 | Canada | Ontario | Huron Co. Goderich | — |
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| Salix eriocephala var. eriocephala | C. O. Grassl 5513 | 07 Jul 1932 | Canada | Ontario | Huron Co. The islands and… | — |
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| Salix lucida Muhl. | C. O. Grassl 5516 | 07 Jul 1932 | Canada | Ontario | Huron Co. The islands and… | — |
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| Diervilla lonicera Mill. | C. O. Grassl 5725 | 07 Jul 1932 | Canada | Ontario | Huron Co. | — |
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| Erigeron strigosus Muhl. ex Willd. var. strigosus | C. O. Grassl 5305 | 07 Jul 1932 | Canada | Ontario | Huron Co. | — |
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| Chara vulgaris L. | C. O. Grassl 5941 | 07 Jul 1932 | Canada | Ontario | Huron Co. Goderich | — |
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