Displaying 26 - 31 out of 31 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | ||
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| Lycopodium clavatum L. | D. Houghton s.n. | 09 Jun 1838 | United States of America | Michigan | 6 mi below Port Huron. | — | 3329597 |
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| Malva houghtonii Torr. & A.Gray | D. Houghton 57 | Aug 1831 | United States of America | — | Northwest Territory; Cap ville | lectotype | 221678 |
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| Penstemon grandiflorus Nutt. | D. Houghton 69 | Jul 1832 | United States of America | Minnesota | Hennepin Co. Falls of St.… | — | 601083 |
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| Sagittaria rigida Pursh | D. Houghton s.n. | 1831 | United States of America | — | Lake Superior | — | 3730167 |
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| Stellaria longipes var. minor Hook. | D. Houghton 59 | Aug 1831 | United States of America | — | Damp sandy shore of Lake… | possible type | 353070 |
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| Synthyris houghtoniana Benth. | D. Houghton 70 | Jul 1832 | United States of America | — | Mississippi River above the Falls… | holotype | 130704 |
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