Displaying 1 - 49 out of 49 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | ||
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| Tolypella intertexta Allen | A. J. Pieters 1 | 30 Aug 1893 | United States of America | Michigan | New Baltimore | — | 02285406 | ||
| Chara globularis Thuill. | A. J. Pieters 36 | 1898 | United States of America | Ohio | Ottawa Co. Put-in-Bay | — | 02017970 |
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| Chara compacta C.B.Rob. | A. J. Pieters 37 | 26 Aug 1898 | United States of America | Ohio | Ottawa Co. western Lake Erie,… | — | 02012055 |
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| Chara contraria A.Braun ex Kütz. | A. J. Pieters 62 | 1898 | United States of America | Ohio | 1 mile outside Sandusky Bay | — | 02012206 |
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| Chara keukensis (Allen) C.B.Rob. | A. J. Pieters 65 | 1898 | United States of America | Ohio | Ottawa Co. Squaw Harbor | — | 02018885 |
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| Chara contraria A.Braun ex Kütz. | A. J. Pieters 66 | 1898 | United States of America | Ohio | Ottawa Co. Squaw Harbor | — | 02017245 |
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| Chara macounii (Allen) C.B.Rob. | A. J. Pieters 67 | 1898 | United States of America | Ohio | Ottawa Co. Squaw Harbor | — | 02019024 |
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| Chara contraria A.Braun ex Kütz. | A. J. Pieters 68 | 29 Jul 1898 | United States of America | Ohio | Ottawa Co. Put-in-Bay | — | 02012186 |
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| Chara contraria A.Braun ex Kütz. | A. J. Pieters 70 | 29 Jul 1898 | United States of America | Ohio | Ottawa Co. Put-in-Bay | — | 02012204 |
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| Chara coronata f. incrustata | A. J. Pieters 74 | 1898 | United States of America | Ohio | Ottawa Co. Squaw Harbor | — | 02017411 |
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| Peniophora cinerea (Pers.) Cooke | A. J. Pieters 144 | 22 Feb 1893 | United States of America | Michigan | Washtenaw Co. Ann Arbor. | — | 1988813 |
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| Trichocolea tomentella (Ehrh.) Dumort. | A. J. Pieters 153 | 28 Apr 1893 | United States of America | Michigan | Ann Arbor | — | 733693 | ||
| Crepidotus albidus Ellis & Everh. | A. J. Pieters 159 | 23 May 1894 | United States of America | Michigan | Washtenaw Co. | possible type | 775787 |
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| Cerrena unicolor (Bull.:Fr.) Murrill | A. J. Pieters 169 | 23 May 1894 | United States of America | Michigan | Washtenaw Co. Ann Arbor | — | 1768758 |
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| Perenniporia ohiensis (Berk.) Ryvarden | A. J. Pieters 923 | 20 Nov 1893 | United States of America | Michigan | Washtenaw Co. Ann Arbor | — | 1975769 |
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| Calonectria atkinsonii Rehm | A. J. Pieters 5240 | 27 Oct 1894 | United States of America | New York | Tompkins Co. Mc Kinney's Glen | type | 00966782 |
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| Tolypella intertexta Allen | A. J. Pieters A.1 | 1898 | United States of America | Ohio | Ottawa Co. Hatchery Bay | — | 01003472 |
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| Tolypella intertexta Allen | A. J. Pieters A.1 | 16 Jul 1898 | United States of America | Ohio | Ottawa Co. in Put-in-Bay, west… | — | 01003475 |
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| Chara contraria A.Braun ex Kütz. | A. J. Pieters A.2 | 1898 | United States of America | Ohio | Ottawa Co. Hatchery Bay | — | 02012185 |
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| Chara contraria f. paragymnophylla | A. J. Pieters A.17 | 1898 | United States of America | Ohio | Ottawa Co. Put-in-Bay | — | 02017207 |
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| Chara braunii C.C.Gmel. | A. J. Pieters A.23 | 29 Jul 1898 | United States of America | Ohio | Ottawa Co. western Lake Erie | — | 02011790 |
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| Nitella subglomerata A.Braun | A. J. Pieters A.25 | 1898 | United States of America | — | western Lake Erie | — | 02022725 |
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| Nitella polyglochin A.Braun | A. J. Pieters A.26 | 1898 | United States of America | Ohio | Ottawa Co. East Harbor | — | 02022573 |
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| Nitella polyglochin A.Braun | A. J. Pieters A.26 | 1898 | United States of America | Ohio | Ottawa Co. East Harbor | — | 02285680 | ||
| Nitella megacarpa Allen | A. J. Pieters A.26 | 1898 | United States of America | Ohio | Ottawa Co. East Harbor | — | 02285679 | ||
| Nitella confervacea (Bréb.) A.Braun ex Leonh. | A. J. Pieters A.27 | 1898 | United States of America | Ohio | Ottawa Co. East Harbor | — | 02020975 |
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| Nitella tenuissima (Desv.) Kütz. | A. J. Pieters A.27 1/2 | 1898 | United States of America | Ohio | Ottawa Co. East Harbor | — | 02285232 |
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| Chara contraria A.Braun ex Kütz. | A. J. Pieters A.28 | 1898 | United States of America | Ohio | Ottawa Co. East Harbor | — | 02012141 |
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| Chara contraria A.Braun ex Kütz. | A. J. Pieters A.29 | 1898 | United States of America | Ohio | Ottawa Co. East Harbor | — | 02012145 |
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| Chara contraria A.Braun ex Kütz. | A. J. Pieters A.29 | 1898 | United States of America | Ohio | Ottawa Co. East Harbor | — | 02012205 |
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| Chara contraria A.Braun ex Kütz. | A. J. Pieters A.30 | 1898 | United States of America | Ohio | Ottawa Co. East Harbor | — | 02017246 |
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| Chara haitensis Turpin | A. J. Pieters A.31 | 1898 | United States of America | Ohio | Ottawa Co. East Harbor | — | 02018425 |
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| Chara haitensis Turpin | A. J. Pieters A.31 | 1898 | United States of America | Ohio | Ottawa Co. western Lake Erie,… | — | 02019411 |
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| Chara coronata Ziz | A. J. Pieters A.32 | 1898 | United States of America | Ohio | Ottawa Co. East Harbor | — | 02017332 |
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| Chara schweinitzii (A.Braun) Kütz. | A. J. Pieters A.32 | 1898 | United States of America | Ohio | Ottawa Co. East Harbor | — | 02019308 |
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| Chara fragilis var. brevibracteata | A. J. Pieters A.33 | 1898 | United States of America | Ohio | Ottawa Co. East Harbor | — | 02017829 |
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| Chara coronata Ziz | A. J. Pieters A.41 | 1898 | United States of America | Ohio | Ottawa Co. East Harbor | — | 02017340 |
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| Chara coronata Ziz | A. J. Pieters A.42 | 1898 | United States of America | Ohio | Ottawa Co. East Harbor, East… | — | 02017333 |
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| Chara coronata Ziz | A. J. Pieters A.42 | 10 Aug 1898 | United States of America | Ohio | Ottawa Co. East Harbor, Carp… | — | 02017337 |
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| Chara haitensis Turpin | A. J. Pieters A.53 | 1898 | United States of America | Ohio | Ottawa Co. Portage River | — | 02018423 |
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| Chara haitensis Turpin | A. J. Pieters A.53 | 1898 | United States of America | Ohio | Ottawa Co. Portage River | — | 02018424 |
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| Nitella subglomerata A.Braun | A. J. Pieters A.56 | 1898 | United States of America | Ohio | Ottawa Co. East Harbor | — | 02022718 |
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| Chara contraria A.Braun ex Kütz. | A. J. Pieters A.69 | 1898 | United States of America | Ohio | Ottawa Co. Put-in-Bay | — | 02012187 |
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| Chara contraria A.Braun ex Kütz. | A. J. Pieters A.71 | 22 Jul 1898 | United States of America | Ohio | Ottawa Co. western Lake Erie,… | — | 02012188 |
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| Chara contraria A.Braun ex Kütz. | A. J. Pieters A.72 | 29 Jul 1898 | United States of America | Ohio | Ottawa Co. Put-in-Bay | — | 02012207 |
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| Chara intermedia A.Braun | A. J. Pieters A.73 | 1898 | United States of America | Ohio | Ottawa Co. | — | 02018799 |
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| Chara haitensis Turpin | A. J. Pieters A31 | Aug 1898 | United States of America | Michigan | East Harbor, on sandy beach | — | 03331811 |
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| Carex hirsutella Mack. | A. J. Pieters s.n. | Aug 1 99 | United States of America | District of Columbia | — | 2190288 |
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| Puccinia antirrhini Dietel & Holw. | A. J. Pieters s.n. | 20 Jul 1907 | United States of America | California | Hollister | — | 3003008 |
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