Displaying 26 - 50 out of 291 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Juncus drummondii E.Mey. | F. Petrak 50181 | 09 Aug 1950 | United States of America | Wyoming | Lake Marie, Medicine Bow Mts. | — |
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| Juncus interior Wiegand x J. tenuis Willd. | F. Petrak 50211 | 04 Aug 1950 | United States of America | South Dakota | Pennington Co. Hyw. 16, near… | — |
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| Mentha arvensis var. glabrata (Benth.) Fernald | F. Petrak 50094 | 04 Aug 1950 | United States of America | South Dakota | Near Rockerville in the Black… | — |
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| Betula papyrifera Marshall | F. Petrak 50167 | 13 Aug 1950 | United States of America | South Dakota | Custer Co. In gully below… | — |
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| Synchytrium succisae de Bary & Woronin | F. Petrak s.n. | Sep 1924 | — | — | — |
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| Peronospora arborescens (Berk.) Casp. | F. Petrak s.n. | May 1923 | Poland | — | Jab?onka | — |
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| Peronospora niessliana Berl. | F. Petrak s.n. | May 1923 | — | — | — |
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| Arctostaphylos uva-ursi (L.) Spreng. | F. Petrak 50253 | 04 Aug 1950 | United States of America | South Dakota | Custer Co. Woods, roadside, Hwy.… | — |
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| Peronospora radii de Bary | F. Petrak s.n. | Jun 1923 | — | — | — |
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| Peronospora sordida Berk. & Broome | F. Petrak s.n. | VIII.1923 | Czech Republic | — | West Beskids. [Possibly Pogórze Bukoskie] | — |
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| Amorpha nana Nutt. | F. Petrak 50073 | 03 Aug 1950 | United States of America | South Dakota | roadside Hwy 85, south of… | — |
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| Plasmopara pusilla (de Bary) J.Schröt. | F. Petrak s.n. | Aug 1940 | Czech Republic | — | Moravia"in pratis ad flumen Becwa… | — |
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| Plasmopara pusilla (de Bary) J.Schröt. | F. Petrak s.n. | Aug 1940 | Germany | — | "in pratis ad flumen Becwa… | — |
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| Taphrina epiphylla (Sadeb.) Sacc. | F. Petrak s.n. | Jun 1923 | — | — | — |
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| Taphrina populina Fr. | F. Petrak s.n. | Jun 1923 | Slovakia | — | ...Leutschau [Levoca] | — |
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| Taphrina tosquinetii (Westend.) Magnus | F. Petrak s.n. | Aug 1923 | — | — | — |
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| Calosphaeria abnormis (Fr.) Höhn. | F. Petrak s.n. | Aug 1914 | Austria | — | Weisskirchen | — |
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| Chalcosphaeria pustula (Pers.) Höhn. | F. Petrak s.n. | May 1936 | Germany | — | Weißkirchen, Marienthal | — |
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| Cryptodiaporthe aesculi (Fuckel) Petr. | F. Petrak s.n. | Sep 1920 | Germany | — | Weisskirchen | — |
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| Cryptospora suffusa (Fr.) Tul. & C.Tul. | F. Petrak 3525 | Oct. 1942 | Czech Republic | — | Moravia orient.: ad ripam fluminis… | — |
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| Cryptospora suffusa (Fr.) Tul. & C.Tul. | F. Petrak 3525 | Oct. 1942 | — | — | Moravia orient: ad ripam fluminis… | — |
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| Cryptospora suffusa (Fr.) Tul. & C.Tul. | F. Petrak 606 | 9.V.1918 | — | — | — |
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| Cryptospora suffusa (Fr.) Tul. & C.Tul. | F. Petrak 629 | 23.I.1918 | — | — | — |
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| Cryptosporella leptasca (Peck & Clinton) Sacc. | F. Petrak 2033 | Sep 1912 | — | — | Mahrisch Weisskirchen | — |
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| Diaporthe arctii (Lasch) Nitschke | F. Petrak 3527 | Jul 1936 | — | — | Moravia orient.: in arenosis ad… | — |
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