Displaying 26 - 31 out of 31 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | ||
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| Helianthus occidentalis Riddell | D. Houghton s.n. | 30 Aug 1838 | United States of America | Michigan | Kalamazoo | — | 1857679 |
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| Aster azureus var. scabrior Engelm. ex Small | D. Houghton s.n. | 10 Sep 1838 | United States of America | Michigan | Saint Joseph Co. Centreville | lectotype | 19577 |
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| Delphinium azureum var. ß Torr. & A.Gray | D. Houghton s.n. | — | United States of America | — | Lake Winnipeg | syntype | 353304 |
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| Carex buxbaumii Wahlenb. | D. Houghton s.n. | — | United States of America | Minnesota | Cook Co. | — | 25128 |
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| Helianthus occidentalis Riddell | D. Houghton s.n. | [pre 1845] | United States of America | — | Sources of the St. Croix… | — | 1857685 |
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| Cardamine pratensis L. | D. Houghton s.n. | s.d. | — | — | Lake Superior | — | 3178200 |
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