Displaying 1 - 25 out of 125 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Nymphaea amazonum Mart. & Zucc. subsp. amazonum | J. H. Wiersema 2029 | 09 Aug 1980 | Ecuador | Guayas | Common in water to 1/2… | — | ||||
| Carex acutata Boott | J. H. Wiersema 2019 | 04 Aug 1980 | Ecuador | Pichincha | 11 km W of jct.… | — |
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| Utricularia foliosa L. | J. H. Wiersema 2007 | 02 Aug 1980 | Ecuador | Guayas | Along road from Balzar to… | — |
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| Pistia stratiotes L. | J. H. Wiersema 4544 | 07 Mar 1991 | Guyana | Demerara-Mahaica | Roadside ditches opposite National Botanical… | — |
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| Carex blanda Dewey | J. H. Wiersema 1753a | 06 May 1980 | United States of America | Alabama | Lawrence Co. South of Larence… | — |
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| Agrostis elliottiana Schult. | J. H. Wiersema 1543a | 29 Apr 1980 | United States of America | Alabama | Randolph Co. Outcrop W of… | — |
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| Alopecurus carolinianus Walter | J. H. Wiersema 1463 | 30 Mar 1980 | United States of America | Alabama | Montgomery Co. On median strip… | — |
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| Calamagrostis neglecta subsp. inexpansa (A.Gray) Tzvelev | J. H. Wiersema 1097 | 04 Jul 1979 | United States of America | Michigan | Charlevoix Co. Near Lake Michigan… | — |
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| Glyceria acutiflora Torr. | J. H. Wiersema 1815 | 09 May 1980 | United States of America | Alabama | Jackson Co. AL-79, ca 4… | — |
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| Glyceria canadensis (Michx.) Trin. | J. H. Wiersema 1268 | 03 Aug 1979 | United States of America | Michigan | Charlevoix Co. By Greenwood peat,… | — |
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| Glyceria septentrionalis Hitchc. | J. H. Wiersema 1731 | 06 May 1980 | United States of America | Alabama | Colbert Co. At jct of… | — |
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| Glyceria septentrionalis Hitchc. | J. H. Wiersema 1754a | 06 May 1980 | United States of America | Alabama | Lawrence Co. Along Alt. US-72… | — |
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| Glyceria striata (Lam.) Hitchc. | J. H. Wiersema 1715 | 05 May 1980 | United States of America | Alabama | Lauderdale Co. Above Cypress Creek,… | — |
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| Glyceria striata (Lam.) Hitchc. | J. H. Wiersema 1750 | 06 May 1980 | United States of America | Alabama | Lawrence Co. Along AL-101 at… | — |
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| Glyceria striata (Lam.) Hitchc. | J. H. Wiersema 1755 | 06 May 1980 | United States of America | Alabama | Along AL-101 at Meadow Pond,… | — |
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| Poa compressa L. | J. H. Wiersema 1158 | 17 Jul 1979 | United States of America | Michigan | Charlevoix Co. Along shore of… | — |
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| Poa autumnalis Muhl. ex Elliott | J. H. Wiersema 1809 | 09 May 1980 | United States of America | Alabama | Jackson Co. Near headwaters of… | — |
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| Poa palustris L. | J. H. Wiersema 1131 | 13 Jul 1979 | United States of America | Michigan | Charlevoix Co. Along Bowman Rd,… | — |
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| Poa pratensis L. | J. H. Wiersema 1229 | 18 Jul 1979 | United States of America | Michigan | Charlevoix Co. Along Charlevoix Co… | — |
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| Poa saltuensis Fernald & Wiegand | J. H. Wiersema 1007 | 29 Jun 1979 | United States of America | Michigan | Charlevoix Co. Frequent in woods… | — |
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| Lolium arundinaceum (Schreb.) Darbysh. | J. H. Wiersema 1754 | 06 May 1980 | United States of America | Alabama | Lawrence Co. Abundant on moist… | — |
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| Carex alata Torr. | J. H. Wiersema s.n. | 06 May 1980 | United States of America | Alabama | Lawrence Co. Common on moist… | — |
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| Carex albolutescens Schwein. | J. H. Wiersema 1644 | 01 May 1980 | United States of America | Alabama | Greene Co. Frequent in moist… | — |
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| Carex albolutescens Schwein. | J. H. Wiersema 1697 | 05 May 1980 | United States of America | Alabama | Marion Co. Common in wet… | — |
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| Carex albolutescens Schwein. | J. H. Wiersema 1779 | 08 May 1980 | United States of America | Alabama | Jackson Co. Frequent at margins… | — |
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