Displaying 1 - 50 out of 503 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Abies balsamea (L.) Mill. | C. O. Grassl 1155 | 25 Aug 1931 | United States of America | Michigan | Siskiwit Bay, Isle Royal | — |
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| Acer tataricum L. | C. O. Grassl 5268 | 23 May 1933 | United States of America | Michigan | Washtenaw Co. Roadside near 3rd… | — |
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| Agrostis | C. O. Grassl 2961 | 08 Aug 1933 | United States of America | Michigan | Menominee Co. near mouth of… | — |
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| Agrostis | C. O. Grassl 2958 | 08 Aug 1933 | United States of America | Michigan | Menominee Co. On beach of… | — |
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| Alnus incana subsp. rugosa (Du Roi) R.T.Clausen | C. O. Grassl 2239 | 06 Sep 1932 | Canada | Ontario | The islands and the shore… | — |
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| Alnus incana subsp. rugosa (Du Roi) R.T.Clausen | C. O. Grassl 2242 | 05 Aug 1932 | Canada | Ontario | The islands and shore of… | — |
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| Alnus incana subsp. rugosa (Du Roi) R.T.Clausen | C. O. Grassl 3327 | 05 Sep 1933 | United States of America | Wisconsin | Marinette Co. Marsh near Green… | — |
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| Alopecurus aequalis Sobol. | C. O. Grassl 4093 | 08 Sep 1932 | Canada | Ontario | South bank of French River… | — |
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| Alopecurus aequalis Sobol. | C. O. Grassl 4130 | 06 Aug 1932 | Canada | Ontario | Gore Bay, Manitoulin Island | — |
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| Alopecurus aequalis Sobol. | C. O. Grassl 4177 | 27 Jul 1932 | Canada | Ontario | Beach west of Little Current,… | — |
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| Alopecurus aequalis Sobol. | C. O. Grassl 4715 | 17 Jul 1932 | Canada | Ontario | On bank of creek near… | — |
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| Ambrosia artemisiifolia L. | C. O. Grassl 5659 | 05 Aug 1932 | Canada | Ontario | Gore Bay, Manitoulin Island | — |
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| Ambrosia artemisiifolia L. | C. O. Grassl 5701 | 10 Sep 1932 | Canada | Ontario | on south side of French… | — |
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| Ammophila breviligulata Fernald | C. O. Grassl 4694 | 15 Aug 1932 | Canada | Ontario | On sandy beach ridge at… | — |
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| Ammophila breviligulata Fernald | C. O. Grassl 4173 | August 16 | Canada | Ontario | Great Duck Island; sand dunes… | — |
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| Anaphalis margaritacea (L.) Benth. & Hook.f. | C. O. Grassl 5662 | 06 Sep 1932 | Canada | Ontario | S. side French River Harbor,… | — |
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| Andropogon | C. O. Grassl 4690 | 15 Aug 1932 | Canada | Ontario | Cockburn Island; on beach at… | — |
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| Andropogon | C. O. Grassl 4124 | 10 Aug 1932 | Canada | Ontario | Near Helen Bay Manitoulin Island;… | — |
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| Andropogon | C. O. Grassl 4124 | 10 Aug 1932 | Canada | Ontario | Near Helen Bay Manitoulin Island;… | — |
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| Andropogon | C. O. Grassl 4172 | 16 Aug 1932 | Canada | Ontario | Great Duck Island; on sand… | — |
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| Andropogon gerardii Vitman | C. O. Grassl 3581 | 03 Sep 1933 | United States of America | Michigan | Edge of oak woods south… | — |
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| Andropogon gerardii Vitman | C. O. Grassl 1861 | 03 Aug 1933 | United States of America | Michigan | Menominee Co. Edge of oakwoods… | — |
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| Antennaria howellii subsp. neodioica (Greene) R.J.Bayer | C. O. Grassl 3252 | Aug. 28 1933 | United States of America | Michigan | Menominee Co. City of Menominee. | — |
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| Apocynum sibiricum Jacq. | C. O. Grassl 2101 | 30 Jul 1932 | Canada | Ontario | Great Cloche Island, opposite Little… | — |
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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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| Aralia hispida Vent. | C. O. Grassl 469 | 30 Jul 1931 | Canada | Ontario | Caribou I | — |
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| Aralia hispida Vent. | C. O. Grassl 3730 | 09 Aug 1932 | Canada | Ontario | On beach of Cook's Bay… | — |
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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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| Aralia racemosa var. racemosa | C. O. Grassl 5560 | 10 Aug 1932 | Canada | Ontario | Near Helen Bay, Manitoulin Island | — |
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| Aralia racemosa var. racemosa | C. O. Grassl 3058 | 14 Aug 1933 | United States of America | Michigan | Menominee Co. Woods near Deer… | — |
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| Arctostaphylos uva-ursi (L.) Spreng. | C. O. Grassl 2992 | 08 Aug 1933 | United States of America | Wisconsin | Marinette Co. Where Hall Ave.… | — |
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| Artemisia absinthium L. | C. O. Grassl 2505 | 19 Jul 1933 | United States of America | Michigan | Menominee Co. opposite the hospital… | — |
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| Athyrium filix-femina subsp. angustum (Willd.) R.T.Clausen | C. O. Grassl 5886 | 22 Jul 1932 | Canada | Ontario | Near mouth of stream. Wekwemikongsing,… | — |
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| Athyrium filix-femina subsp. angustum (Willd.) R.T.Clausen | C. O. Grassl 5854 | 17 Jul 1932 | Canada | Ontario | On hillside at Indian Village… | — |
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| Athyrium filix-femina subsp. angustum R.T.Clausen | C. O. Grassl 2831 | 01 Aug 1933 | United States of America | Michigan | Menominee Co. In oak woods… | — |
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| Athyrium filix-femina subsp. angustum R.T.Clausen | C. O. Grassl 5854 | 17 Jul 1932 | Canada | Ontario | On hillside at Indian Village… | — |
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| Betula alleghaniensis Britton | C. O. Grassl 5781 | Aug. 12 | Canada | Ontario | Manitoulin Distr. In open field… | — |
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| Betula glandulifera (Regel) B.T.Butler | C. O. Grassl 31706 | 20 Aug 1933 | United States of America | Wisconsin | Marinette Co. | — |
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| Betula papyrifera Marshall | C. O. Grassl 1248 | July 19 | Canada | Ontario | South Lizard Island | — |
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| Betula papyrifera Marshall | C. O. Grassl 2901 | 04 Aug 1933 | United States of America | Michigan | Bank of Menominee River | — |
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| Betula papyrifera Marshall | C. O. Grassl 2237 | Aug. 16 | Canada | Ontario | Great Duck Island | — |
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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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| Bidens cernua L. | C. O. Grassl 5665 | 05 Sep 1932 | Canada | Ontario | north side of French River… | — |
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| Bidens cernua L. | C. O. Grassl 3037 | 12 Aug 1933 | United States of America | Michigan | Menominee Co. Near new bridge,… | — |
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| Bidens cernua L. | C. O. Grassl 3331 | 05 Sep 1933 | United States of America | Wisconsin | Marinette Co. On beach of… | — |
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| Bidens coronata (L.) Britton | C. O. Grassl 3173 | 20 Aug 1933 | United States of America | Wisconsin | Marinette Co. between Marinette &… | — |
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| Bidens frondosa L. | C. O. Grassl 3359 | 14 Sep 1933 | United States of America | Michigan | Menominee Co. City of Menominee. | — |
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| Bromus tectorum L. | C. O. Grassl 3838 | 08 Jun 1933 | United States of America | Michigan | Washtenaw Co. | — |
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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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| Cacalia plantaginea (Raf.) Shinners | C. O. Grassl 5373 | 09 Jul 1932 | Canada | Ontario | Bruce Co. bank of stream | — |
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