Displaying 1 - 25 out of 41 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Bjerkandera | W. C. Stevenson s.n. | Aug 1878 | United States of America | Pennsylvania | Philadelphia Co. Fairmount Park, Philadelphia. | — |
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| Calvatia craniiformis (Schwein.) Fr. | W. C. Stevenson | 1896 | United States of America | — | — | |||||
| Camarops petersii (Berk. & M.A.Curtis) Nannf. | W. C. Stevenson s.n. | 1896 | United States of America | Pennsylvania | Philadelphia Co. Fairmont Park | — |
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| Chaetomella stevensonii Ellis | W. C. Stevenson s.n. | Jun 1882 | United States of America | Pennsylvania | Philadelphia Co. Fairmount Park | type |
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| Chaetosphaeria pannicola (Berk. & M.A.Curtis) Sacc. | W. C. Stevenson s.n. | Aug 1886 | United States of America | Pennsylvania | Delaware Co. [No specific locality… | — |
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| Coltricia cinnamomea (Jacq.) Murrill | W. C. Stevenson s.n. | s.d. | — | — | — |
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| Corticium ochroleucum Bres. | W. C. Stevenson 258 | s.d. | — | — | — |
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| Crepidotus calolepis (Fr.) P.Karst. | W. C. Stevenson s.n. | Jul 1889 | United States of America | Pennsylvania | Chester Co. Goshenville [an unincorporated… | — |
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| Gymnosporangium globosum (Farl.) Farl. | W. C. Stevenson s.n. | s.d. | United States of America | Pennsylvania | — |
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| Merulius ambiguus Berk. | W. C. Stevenson s.n. | 04 Mar 1880 | United States of America | New Jersey | Gloucester Co. Newfield | — |
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| Nectria peziza (Tode) Fr. | W. C. Stevenson s.n. | s.d. | United States of America | Pennsylvania | Philadelphia Co. Near Philadelphia | — | ||||
| Peronospora lepidii (McAlpine) G.W.Wilson | W. C. Stevenson s.n. | Jun 1882 | United States of America | Pennsylvania | Philadelphia Co. Fairmount Park, Philadelphia. | — |
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| Peronospora parasitica (Pers.:Fr.) Fr. | W. C. Stevenson s.n. | Jun 1882 | United States of America | Pennsylvania | Philadelphia Co. Fairmount Park, Philadelphia | — |
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| Peronospora parasitica (Pers.:Fr.) Fr. | W. C. Stevenson s.n. | Jun 1882 | United States of America | Pennsylvania | Philadelphia Co. Fairmount Park, Philadelphia | — |
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| Pestalotia stevensonii Peck | W. C. Stevenson s.n. | s.d. | United States of America | Pennsylvania | Westchester. | type |
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| Polyporus alveolaris (DC.:Fr.) Bondartsev & Singer | W. C. Stevenson s.n. | Nov 1881 | United States of America | Pennsylvania | Philadelphia Co. Fairmount Park, Philadelphia. | — |
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| Puccinia arenariae (Schumach.) G.Winter | W. C. Stevenson s.n. | 04 Jun 1883 | United States of America | Pennsylvania | Philadelphia Co. | — |
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| Puccinia arenariae (Schumach.) G.Winter | W. C. Stevenson s.n. | Jun 1883 | United States of America | Pennsylvania | Fhilada | — |
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| Puccinia cryptotaeniae Peck | W. C. Stevenson s.n. | Aug 1884 | United States of America | Pennsylvania | Fairmount Park, Philada | — |
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| Puccinia cryptotaeniae Peck | W. C. Stevenson s.n. | Aug 1884 | United States of America | Pennsylvania | Fairmount Park, Philada | — |
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| Puccinia cryptotaeniae Peck | W. C. Stevenson s.n. | Aug 1884 | United States of America | Pennsylvania | Fairmount Park, Philada | — |
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| Puccinia cryptotaeniae Peck | W. C. Stevenson s.n. | Aug 1884 | United States of America | Pennsylvania | Fairmount Park, Philada | — |
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| Puccinia pimpinellae (F.Strauss) Röhl. | W. C. Stevenson | — | United States of America | Pennsylvania | Philadelphia Co. Near Philadelphia | — | ||||
| Puccinia pimpinellae (F.Strauss) Röhl. | W. C. Stevenson 411 | Jun 1880 | United States of America | Pennsylvania | Chester Co. | — |
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| Puccinia podophylli Schwein. | W. C. Stevenson s.n. | 6 1880 | — | — | West Park | — |