Displaying 1 - 25 out of 275 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Cirsium brevistylum Cronquist | F. Petrak 46 | 27 May 1911 | United States of America | California | San Bernardino Co. | — |
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| Delphinium geyeri Greene | F. Petrak 50148 | 05 Aug 1950 | United States of America | Colorado | Weld Co. Near Rockport | — |
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| Eriogonum arcuatum Greene var. arcuatum | F. Petrak 50207 | 05 Aug 1950 | United States of America | Colorado | Roadside, near Longmont | — |
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| Diaporthe decorticans (Lib.) Sacc. & Roum. | F. Petrak 3901 | Oct 1955 | Austria | Lower Austria | Osterreich: Niederosterreich, Donau-Auen bei Tulln | — |
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| Diaporthe decorticans (Lib.) Sacc. & Roum. | F. Petrak 3901 | Oct 1955 | Austria | Lower Austria | Osterreich: Niederosterreich, Donau-Auen bei Tulln | — |
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| Pirottaea aconiti Petr. | F. Petrak s.n. | Jul 1939 | Austria | Lower Austria | Niederösterreich (Lower Austria), bei Lunz… | — |
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| Pyrenopeziza ruttneri Petr. | F. Petrak s.n. | Jul 1939 | Austria | Lower Austria | Niederösterreich. am Durchlaß bei Lunz… | type |
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| Pyrenopeziza soldanellae Petr. | F. Petrak s.n. | May 1943 | Austria | Lower Austria | Niederösterreich. am Durchlaß bei Lunz… | type |
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| Phoma pannonica Petr. | F. Petrak s.n. | May 1939 | Austria | Lower Austria | Niederösterreich. Bisamberg near Vienna | type |
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| Asteromella velata Petr. | F. Petrak s.n. | Sep 1940 | Austria | Lower Austria | Niederösterreich. Hundsheimerkogel near Hainburg | type |
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| Microdiplodia mycophaga Petr. | F. Petrak s.n. | May 1939 | Austria | Lower Austria | Niederösterreich. Hundsheimerkogel near Hainburg | type |
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| Pyrenopeziza austriaca Petr. | F. Petrak s.n. | May 1940 | Austria | Lower Austria | Niederösterreich. Hundsheimerkogel near Hainburg | type |
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| Septoria vindobonensis Petr. | F. Petrak s.n. | Sep 1940 | Austria | Lower Austria | Niederösterreich. Pfaffenberg, Deutsch-Altenburg | type |
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| Ascochyta vindobonensis Petr. | F. Petrak s.n. | Jun 1940 | Austria | Lower Austria | Niederösterreich. Pfaffstättnerkogel near Baden | type |
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| Coniothyrium massariae Petr. | F. Petrak s.n. | May 1939 | Austria | Lower Austria | Niederösterreich. Vienna, Danube (as Danau-… | type |
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| Massaria conspurcata (Wallr.) Sacc. | F. Petrak s.n. | Oct 1955 | Austria | Lower Austria | Niederösterreich. Donau-Auen bei Tulln | — |
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| Massaria conspurcata (Wallr.) Sacc. | F. Petrak s.n. | Oct 1955 | Austria | Lower Austria | Niederösterreich. Donau-Auen bei Tulln | — |
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| Didymosphaeria cupula Ellis | F. Petrak s.n. | May 1950 | United States of America | Maryland | Nordamerika, Beltsville | — |
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| Didymosphaeria cupula Ellis | F. Petrak s.n. | May 1950 | United States of America | Maryland | Nordamerika, Beltsville | — |
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| Biscogniauxia atropunctata (Schwein.:Fr.) Pouzar | F. Petrak s.n. | May 1950 | United States of America | Maryland | Beltsville. | — |
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| Biscogniauxia atropunctata (Schwein.:Fr.) Pouzar | F. Petrak s.n. | May 1950 | United States of America | Maryland | Beltsville. | — |
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| Eutypella fraxinicola Ellis & Everh. | F. Petrak s.n. | 17 May 1950 | United States of America | Maryland | Beltsville. | — |
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| Eutypella juglandicola (Schwein.) Ellis & Everh. | F. Petrak s.n. | 17 May 1950 | United States of America | Maryland | Beltsville. | — |
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| Lophodermium pinicolum Tehon | F. Petrak s.n. | Oct 1950 | United States of America | Maryland | Wälder bei [woods at] Beltsville | — |
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| Lophodermium pinastri (Schrad.:Fr.) Chev. | F. Petrak s.n. | Oct 1950 | United States of America | Maryland | Wälder bei [woods at] Beltsville | — |
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