Displaying 1 - 75 out of 291 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Achillea millefolium L. | F. Petrak 50012 | 7. VIII | United States of America | Wyoming | Brooklyn Lake | — |
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| Aglaospora profusa (Fr.) De Not. | F. Petrak s.n. | s.d. | Czech Republic | — | bei Mährisch-Weisskirchen | — |
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| Albertiniella reticulata Kirschst. | F. Petrak s.n. | Sep 1932 | Austria | — | Weisskirchen | — |
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| Allantoporthe tessella (Pers.) Petr. | F. Petrak s.n. | Jul. | Germany | — | Seebach prope pagum Lunz | — |
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| Allantoporthe tessella (Pers.) Petr. | F. Petrak s.n. | Nov. | Ukraine | — | Stryi | — |
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| Allantoporthe tessella (Pers.) Petr. | F. Petrak s.n. | Apr. | Ukraine | — | Stryi | — |
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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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| Amorpha nana Nutt. | F. Petrak 50073 | 03 Aug 1950 | United States of America | South Dakota | roadside Hwy 85, south of… | — |
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| Androsace septentrionalis L. | F. Petrak 50190 | 08 Aug 1950 | United States of America | Wyoming | Albany Co. near Brooklyn Lake,… | — |
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| Anthostoma bavaricum Petr. | F. Petrak s.n. | Aug 1925 | Czech Republic | — | Moravia, M. Weisskirchen | type |
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| Anthracoidea arenaria (Syd.) Nannf. | F. Petrak s.n. | — | Czech Republic | — | Moravia orient. pr. Mähr. -… | — |
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| Aplosporella tiliacea var. dubia Petr. | F. Petrak s.n. | 26 Oct 1914 | Czech Republic | — | MoraviaM. - Weisskirchen | type |
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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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| Arenaria fendleri A.Gray var. fendleri | F. Petrak 50048 | 12 Aug 1950 | United States of America | Wyoming | Albany Co. Stoney roadside, Hwy… | — |
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| Arnica cordifolia Hook. | F. Petrak 50129 | Aug. 8 .950 | United States of America | Wyoming | Albany Co. Nash Fork Creek,… | — |
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| Artemisia longifolia Nutt. | F. Petrak 50103 | 04 Aug 1950 | United States of America | South Dakota | Jackson Co. Badlands National Park,… | — |
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| Artemisia longifolia Nutt. | F. Petrak 50106 | 04 Aug 1950 | United States of America | South Dakota | — |
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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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| Ascochyta galeobdolina Petr. [ined.] | F. Petrak s.n. | May 1924 | Czech Republic | — | Moraviaeastern Moravia, exact location illegible | taxon ined. |
![Ascochyta galeobdolina Petr. [ined.]](https://sweetgum.nybg.org/images3/1717/432/01097091.thumb.jpg)
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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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| Asteromella inulae Petr. | F. Petrak s.n. | Sep 1940 | Austria | Lower Austria | Niederösterreich. Hundsheimerkogel near Hainburg | type | ||||
| Asteromella velata Petr. | F. Petrak s.n. | Sep 1940 | Austria | Lower Austria | Niederösterreich. Hundsheimerkogel near Hainburg | type |
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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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| 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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| Calosphaeria abnormis (Fr.) Höhn. | F. Petrak s.n. | Aug 1914 | Austria | — | Weisskirchen | — |
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| Calospora platanoidis var. sorbi Destrée & Rolland | F. Petrak s.n. | 11 Jul 1918 | Poland | — | [Locality information is illegible] | — |
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| Campanula rotundifolia L. | F. Petrak 50191 | 08 Aug 1950 | United States of America | Wyoming | Albany Co. University Summer Camp,… | — |
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| Castilleja rhexifolia Rydb. | F. Petrak 50039 | 09 Aug 1950 | United States of America | Wyoming | Albany Co. Near woods, Brooklyn… | — |
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| Caudospora taleola (Fr.) Starbäck | F. Petrak s.n. | Aug 1923 | Czech Republic | — | West Beskiden, Wsetin [Vsetí] | — |
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| Caudospora taleola (Fr.) Starbäck | F. Petrak s.n. | Apr 1936 | — | — | — |
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| Chalcosphaeria pustula (Pers.) Höhn. | F. Petrak s.n. | May 1936 | Germany | — | Weißkirchen, Marienthal | — |
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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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| Cirsium altissimum (L.) Spreng. | F. Petrak 105 | 27. IX.,2.X. 1913 | United States of America | Missouri | Jasper Co. Webb City | — |
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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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| Cirsium lappaceum var. ramosum Petr. | F. Petrak s.n. | Jul 1912-1915 | Czech Republic | — | E seminibus a cl. G.… | possible type |
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| Cirsium sychnosanthum Petr. | F. Petrak s.n. | Jun 1914-Jul 1914 | Czech Republic | — | E seminibus plantae loco indicato… | possible type |
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| Coltricia perennis (L.:Fr.) Murrill | F. Petrak 468 | Sep 1924 | — | — | — |
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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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| Coniothyrium scopariicola Petr. | F. Petrak s.n. | Sep 1913 | Czech Republic | — | MoraviaM-Weisskirchen, Hrabuvka | type |
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| Coniothyrium sydowianum Petr. | F. Petrak s.n. | 17 Jan 1919 | Czech Republic | — | MoraviaM-Weisskirchen, Mil-Oberralschule | type |
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| Craterellus cornucopioides (L.) Pers. | F. Petrak s.n. | Aug 1922 | — | — | — |
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| Cryptodiaporthe aesculi (Fuckel) Petr. | F. Petrak s.n. | Sep 1920 | Germany | — | Weisskirchen | — |
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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 | ||||
| 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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| Cucurbitaria rubefaciens Petr. | F. Petrak s.n. | May 1927 | — | — | Moravia, M. Weisskirchen | — |
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| Cylindrobasidium evolvens (Fr.) Jülich | F. Petrak 212 | Sep 1923 | — | — | — |
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| Dasyscyphus willkommii (Hartig) Rehm | F. Petrak s.n. | V. 1922 | Czech Republic | — | West Beskiden | — |
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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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| Dendrothele acerina (Pers.) P.A.Lemke | F. Petrak s.n. | Oct 1924 | Czech Republic | — | Moravia, M. Weisskirchen | — |
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| Diaporthe arctii (Lasch) Nitschke | F. Petrak 3527 | Jul 1936 | — | — | Moravia orient.: in arenosis ad… | — |
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| Diaporthe arctii (Lasch) Nitschke | F. Petrak 219 | Sep 1923 | — | — | Word-Berkislen: Wfr sur Ole. Buwir… | — |
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| Diaporthe arctii (Lasch) Nitschke | F. Petrak 3418 | Aug 1940 | — | — | Moravia orient.: ad ripam fluvii… | — |
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| Diaporthe brachyceras Sacc. | F. Petrak 2070 | Apr 1913 | — | — | bei Mabrisch-Weisskirchen | — |
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| Diaporthe brachyceras Sacc. | F. Petrak | Dec 1918 | — | — | M.-Weisskirchen | — |
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| Diaporthe carpini (Pers.) Fuckel | F. Petrak 6 | Aug 1912 | — | — | M.-Weisskirchen: Rodham | — |
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| Diaporthe carpini (Pers.) Fuckel | F. Petrak 3419 | Aug 1940 | — | — | Moravia orient., montes West-Beskiden: in… | — |
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| Diaporthe coneglanensis Sacc. & Speg. | F. Petrak 632 | 27 Jan 1918 | — | — | — |
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| Diaporthe coneglanensis Sacc. & Speg. | F. Petrak | Nov 1913 | — | — | — |
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| Diaporthe controversa (Desm.) Nitschke | F. Petrak | Oct 1874 | — | — | Mahr-Weisskirchen; Frobwkis | — |
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| Diaporthe crassicollis Nitschke | F. Petrak | Oct 1972 | — | — | M.-Weisskirchen: Hurbmiks | — |
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| Diaporthe crataegi Fuckel | F. Petrak 2410 | — | Czech Republic | — | Moravia: Welka prope Mahrisch-Weisskirchen | — |
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| Diaporthe cryptica Nitschke | F. Petrak 633 | 11 Sep 1917 | — | — | — |
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| Diaporthe decorticans (Lib.) Sacc. & Roum. | F. Petrak | May 1974 | — | — | — |
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| Diaporthe decorticans (Lib.) Sacc. & Roum. | F. Petrak s.n. | May 1922 | — | — | Herb - Brokislen: Berg Cablen… | — |
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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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| Diaporthe desmazierii Niessl ex Sacc. | F. Petrak 2515 | — | Ukraine | — | Galicia: ad Rybno prope Stanislau | — |
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| Diaporthe eres Nitschke | F. Petrak 3528 | Sep 1942 | Czech Republic | — | Moravia orient.: in silvis ad… | — |
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| Diaporthe extensa (Fr.) Sacc. | F. Petrak | Aug 1816 | — | — | Mahr-Weisskeichen: Usti | — |
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