Displaying 1 - 25 out of 143 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Amelanchier laevis Wiegand | M. C. Wiegand s.n. | 06 Mar 1908; 24 Jun 1911 | United States of America | Massachusetts | Norfolk Co. Aqueduct Bridge. | isotype |
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| Cirsium horridulum Michx. var. horridulum | M. C. Wiegand s.n. | July 11-08 | United States of America | Massachusetts | North Truro. | — |
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| Eurybia schreberi (Nees) Nees | M. C. Wiegand s.n. | 18 Aug 1908 | United States of America | New York | Cortland Co. Haight's Glen | — |
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| Corallorhiza maculata Raf. | M. C. Wiegand s.n. | 08 Sep 1908 | United States of America | Massachusetts | E. side of aqueduct E.… | — |
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| Platismatia glauca (L.) W.L.Culb. & C.F.Culb. | M. C. Wiegand | 09 Aug 1909 | United States of America | Maine | Washington Co. West Pembroke | — | ||||
| Lobaria pulmonaria (L.) Hoffm. | M. C. Wiegand | 11 Aug 1909 | United States of America | Maine | Washington Co. West Pembroke. | — |
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| Peltigera leucophlebia (Nyl.) Gyeln. | M. C. Wiegand s.n. | 11 Aug 1909 | United States of America | Maine | West Pembroke. | — | ||||
| Crepis capillaris (L.) Wallr. | M. C. Wiegand s.n. | 09 Oct 1912 | United States of America | Massachusetts | Norfolk Co. Weed in Bot… | — |
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| Carex flava L. | M. C. Wiegand 1921 | 07 Jun 1914 | United States of America | New York | Onondaga Co. Shore of Green… | — |
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| Rhus integrifolia (Nutt.) Benth. & Hook.f. ex W.H.Brewer & S.Watson | M. C. Wiegand 3775 | 22 Mar 1922 | United States of America | California | San Diego Co. Mount Soledad | — |
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| Pellaea andromedifolia (Kaulf.) Fée | M. C. Wiegand 2954a | 22 Mar 1922 | United States of America | California | San Diego Co. Ravine, Mount… | — |
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| Euphorbia melanadenia Torr. | M. C. Wiegand 3742 | 31 Mar 1922 | United States of America | California | Imperial Co. 1 mile east… | — |
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| Astragalus didymocarpus var. obispensis (Rydb.) Barneby | M. C. Wiegand 3606 | 01 Apr 1922 | United States of America | California | Imperial Co. 4 miles east… | — |
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| Oenothera deltoides Torr. & Frém. var. deltoides | M. C. Wiegand 3905 | 08 Apr 1922 | United States of America | California | San Bernardino Co. Mohave Desert,… | — |
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| Nemacladus orientalis (McVaugh) Morin | M. C. Wiegand 4350 | 09 Apr 1922 | United States of America | California | San Bernardino Co. Lava rocks,… | — |
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| Dalea mollissima (Rydb.) Munz | M. C. Wiegand 3592 | 12 Apr 1922 | United States of America | California | San Bernardino Co. Mohave Desert,… | — |
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| Nemacladus rubescens Greene | M. C. Wiegand 4353 | 14 Apr 1922 | United States of America | Arizona | Yuma Co. 15 miles south… | — |
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| Eriastrum diffusum subsp. jonesii H.Mason | M. C. Wiegand 4036 | 15 Apr 1922 | United States of America | Arizona | Yuma Co. 4 miles east… | — |
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| Chaenactis carphoclinia A.Gray | M. C. Wiegand 4508 | 15 Apr 1922 | United States of America | Arizona | Yuma Co. Salome road, 4… | — |
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| Chaenactis stevioides Hook. & Arn. | M. C. Wiegand 4517 | 15 Apr 1922 | United States of America | Arizona | Yuma Co. Salome road, 4… | — |
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| Eriophyllum lanatum (Pursh) J.Forbes | M. C. Wiegand 4503 | 15 Apr 1922 | United States of America | Arizona | Yuma Co. 3 miles east… | — |
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| Malacothrix glabrata (A.Gray ex D.C. Eaton) A.Gray | M. C. Wiegand 4571 | 15 Apr 1922 | United States of America | Arizona | Yuma Co. 4 miles east… | — |
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| Filago arizonica A.Gray | M. C. Wiegand 4420 | 16 Apr 1922 | United States of America | Arizona | Maricopa Co. 4 miles northwest… | — |
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| Eriastrum diffusum subsp. jonesii H.Mason | M. C. Wiegand 4037 | 17 Apr 1922 | United States of America | Arizona | 23 miles north of Florence,… | — |
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| Astragalus nuttallianus var. imperfectus (Rydb.) Barneby | M. C. Wiegand 3615 | 18 Apr 1922 | United States of America | Arizona | 19 miles northwest of Florence,… | — |
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