Displaying 251 - 291 out of 291 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Ambrosia tomentosa Nutt. | F. Petrak 50147 | 04 Aug 1950 | United States of America | South Dakota | Pennington Co. Roadside near Rockerville,… | — |
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| Artemisia scopulorum A.Gray | F. Petrak 50119 | 07 Aug 1950 | United States of America | Wyoming | Albany Co. shore of Brooklyn… | — |
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| Oxytropis campestris var. gracilis (A.Nelson) Barneby | F. Petrak 50029 | 09 Aug 1950 | United States of America | Wyoming | Carbon Co. At Lake Marie,… | — |
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| Oxytropis lambertii Pursh | F. Petrak 50153 | 08 Aug 1950 | United States of America | Wyoming | Albany Co. border of woodsat… | — |
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| Chamaerhodos erecta (L.) Bunge | F. Petrak 50053 | 12 Aug 1950 | United States of America | Wyoming | Albany Co. Roadside, Hwy. 30,… | — |
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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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| Geum rossii var. turbinatum (Rydb.) C.L.Hitchc. | F. Petrak 50008 | 09 Jul 1950 - 09 Aug 1950 | United States of America | Wyoming | Brooklyn Lake | — |
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| Potentilla fruticosa L. | F. Petrak 50046 | 11 Aug 1950 | United States of America | Wyoming | Albany Co. Near the University… | — |
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| Potentilla glandulosa subsp. pseudorupestris (Rydb.) D.D.Keck | F. Petrak 50209 | 04 Aug 1950 | United States of America | South Dakota | Pennington Co. Roadside, Hwy. alt.… | — |
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| Potentilla hippiana Lehm. | F. Petrak 50047 | 10 Aug 1950 | United States of America | Wyoming | Albany Co. 1/4 m. above… | — |
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| Heterotheca hirsutissima G.L.Nesom | F. Petrak 50144 | 03 Aug 1950 | United States of America | South Dakota | Jackson Co. Roadside, Hwy 16,… | — |
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| Hieracium gracile Hook. | F. Petrak 50194 | 09 Aug 1950 | United States of America | Wyoming | Albany Co. Meadow at Lake… | — |
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| Hymenoxys acaulis (Pursh) K.F.Parker | F. Petrak 50049 | 12 Aug 1950 | United States of America | Wyoming | Albany Co. [illegible] Buford | — |
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| Townsendia grandiflora Nutt. | F. Petrak 50151 | 06 Aug 1950 | United States of America | Wyoming | Roadside, Hwy. between Fillmore &… | — |
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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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| Senecio crassulus A.Gray | F. Petrak 50133 | 08 Aug 1950 | United States of America | Wyoming | Shore of Nash Fork Creek,… | — |
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| Lophodermium pinastri (Schrad.:Fr.) Chev. | F. Petrak 71578 | 29 May 1950 | United States of America | Maryland | Prince George's Co. Res. Center | — |
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| Pseudoperonospora humuli (Miyabe & Takah.) G.W.Wilson | F. Petrak s.n. | Aug 1940 | Czech Republic | — | Moravia orient: Teplitz prope urbem… | — | ||||
| Pseudoperonospora humuli (Miyabe & Takah.) G.W.Wilson | F. Petrak 421 | Sep 1925 | Germany | — | Mittelfranken, Kr. Hersbruck: Hersbruck, am… | — | ||||
| Phomatosporopsis conii Petr. | F. Petrak s.n. | Aug 1924 | Czech Republic | — | Weisskirchen, Skalícka (Skalice) | possible type |
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| Eutypa moravica Petr. & Keissl. | F. Petrak s.n. | Oct 1925 | Germany | — | Moravia, Mahr- Weisskirchen | possible type |
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| Eutypa moravica Petr. & Keissl. | F. Petrak s.n. | Oct 1925 | Germany | — | Moravia, Mahr- Weisskirchen | possible type |
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| Exarmidium clypeatum Petr. | F. Petrak s.n. | Jul 1940 | Austria | Tyrol | Fulpmes . . . Innsbruck | type |
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| Lophiostoma salicum (Fabre) Sacc. | F. Petrak s.n. | May 1930 | Czech Republic | Moravia-Silesia | M.-Weisskirchen: [Bucwá-Upr. bei Gomtín]. | — | ||||
| Aglaospora profusa (Fr.) De Not. | F. Petrak s.n. | s.d. | Czech Republic | — | bei Mährisch-Weisskirchen | — |
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| Diaporthe parabolica Fuckel | F. Petrak s.n. | Sep 1942 | Czech Republic | — | Moravia orient.: in silvis ad… | — |
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| Rosasphaeria moravica (Petr.) Jaklitsch & Voglmayr | F. Petrak s.n. | 05 Feb 1913 | Czech Republic | — | MoraviaToward Bolten, near the north… | — |
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| Anthracoidea arenaria (Syd.) Nannf. | F. Petrak s.n. | — | Czech Republic | — | Moravia orient. pr. Mähr. -… | — |
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| Lophiostoma compressum (Pers.) Ces. & De Not. | F. Petrak s.n. | Aug 1933 | Czech Republic | — | West Beskydes: Ufer der Ole-[Brema]… | — | ||||
| Elaphomyces granulatus Fr. | F. Petrak s.n. | Aug 1923 | Austria | — | — | |||||
| Artemisia longifolia Nutt. | F. Petrak 50106 | 04 Aug 1950 | United States of America | South Dakota | — |
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| Massaria conspurcata (Wallr.) Sacc. | F. Petrak s.n. | s.d. | Poland | — | Czarny las prope Stanislau | — |
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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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| Cryptodiaporthe liquidambaris Petr. | F. Petrak s.n. | 17 May, 25 May 1950 | United States of America | Maryland | Prince George's Co. Wälder der… | type | ||||
| Cryptodiaporthe liquidambaris Petr. | F. Petrak s.n. | 25 May 1950 | United States of America | Maryland | Prince George's Co. Wälder der… | type | ||||
| Guignardia magnoliae (Schwein.) J.H.Mill. | F. Petrak s.n. | May 1950 | United States of America | Maryland | Prince George's Co. | — |
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| Guignardia magnoliae (Schwein.) J.H.Mill. | F. Petrak s.n. | May 1950 | United States of America | Maryland | Prince George's Co. | — |
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| Ophiobolus fulgidus (Cooke & F.Peck) Sacc. | F. Petrak s.n. | Jul 1950 | United States of America | Maryland | Prince George's Co. | — |
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| Ophiobolus fulgidus (Cooke & F.Peck) Sacc. | F. Petrak s.n. | Jul 1950 | United States of America | Maryland | Prince George's Co. | — |
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| Massaria inquinans (Tode) De Not. | F. Petrak s.n. | July | Austria | — | Germania, Austria inf.: ad pagum… | — |
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