Displaying 1 - 25 out of 53 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | ||
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| Climacocystis borealis (Fr.) Kotl. & Pouzar | A. V. Osmun 3081 | 13 Oct 1926 | United States of America | Massachusetts | Franklin Co. Mt. Toby, Leverett | — | 1768900 |
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| Solidago glutinosa subsp. randii var. randii | A. V. Osmun s.n. | 1904 | United States of America | Massachusetts | Grassland Farms | — | 02352641 |
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| Solidago glutinosa subsp. randii var. randii | A. V. Osmun s.n. | 04 Sep 1903 | United States of America | Massachusetts | Berkshire Co. | — | 2352645 |
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| Solidago glutinosa subsp. randii var. randii | A. V. Osmun s.n. | 04 Sep 1903 | United States of America | Massachusetts | Berkshire Co. | — | 2352646 |
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| Serpula lacrymans (Wulfen) J.Schröt. | A. V. Osmun 2967 | 1911 | United States of America | Massachusetts | Hampshire Co. North Amherst. | — | 01929643 |
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| Cyathus stercoreus (Schwein.) De Toni | A. V. Osmun 2185 | 05 Jun 1917 | United States of America | Massachusetts | Franklin Co. Sunderland. | — | 1967806 |
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| Phytophthora phaseoli Thaxt. | A. V. Osmun 2877 | 08 Sep 1922 | United States of America | Massachusetts | Hampshire Co. Amherst | — | 01926971 |
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| Bremia lactucae Regel | A. V. Osmun 2554 | 14 Mar 1919 | United States of America | Massachusetts | Crosby's Greenhouse, Arlington | — | 1959343 |
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| Bremia lactucae Regel | A. V. Osmun 2555 | 14 Mar 1919 | United States of America | Massachusetts | Wyman Bros. Greenhouse, Arlington | — | 1959344 |
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| Peronospora effusa (Grev.) Tul. | A. V. Osmun 2441 | 16 Jul 1918 | United States of America | Massachusetts | Hampshire Co. Amherst | — | 1960166 |
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| Plasmopara viticola (Berk. & M.A.Curtis) Berl. & De Toni | A. V. Osmun 3111 | 09 Jul 1927 | United States of America | Massachusetts | Hampden Co. West Springfield. | — | 2759625 |
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| Plasmopara viticola (Berk. & M.A.Curtis) Berl. & De Toni | A. V. Osmun 2047 | 22 Aug 1916 | United States of America | Massachusetts | Franklin Co. Sunderland | — | 2759626 |
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| Albugo candida (Pers.) Roussel | A. V. Osmun 1 | 06 May 1916 | United States of America | Massachusetts | Holyoke Mountains. | — | 2771118 |
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| Pleurotus ostreatus (Jacq.:Fr.) P.Kumm. | A. V. Osmun 3077 | 29 Oct 1926 | United States of America | Massachusetts | Hadley | — | 2769540 |
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| Inonotus cuticularis (Bull.:Fr.) P.Karst. | A. V. Osmun 2738 | 28 Oct 1919 | United States of America | Massachusetts | Hampshire Co. Amherst | — | 3026913 |
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| Phragmidium americanum (Peck) Dietel | A. V. Osmun 2206 | 15 Aug 1917 | — | — | Holyoke | — | 03008395 |
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| Rhytisma ilicis-canadensis Schwein. | A. V. Osmun 3212 | 25 Oct 1931 | United States of America | Massachusetts | Belchertown (Packardville). | — | 02967827 |
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| Rhytisma punctatum (Pers.) Fr. | A. V. Osmun 2737 | 12 Oct 1919 | United States of America | Massachusetts | Sunderland (Plum Tree). | — | 2968019 |
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| Puccinia eriophori Thüm. | A. V. Osmun 3028 | 07 Jul 1926 | United States of America | Massachusetts | Franklin Co. | — | 3399369 |
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| Puccinia graminis Pers. | A. V. Osmun 3546 | May 1933 | United States of America | Massachusetts | Franklin Co. | — | 3402021 |
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| Puccinia graminis Pers. | A. V. Osmun 3545 | 29 May 1946 | United States of America | Massachusetts | Franklin Co. | — | 3402024 |
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| Sclerotinia fructigena (Pers.) Norton | A. V. Osmun 2831 | 01 May 1921 | United States of America | Massachusetts | Amherst. | — | 03423079 |
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| Sclerotinia fructigena (Pers.) Norton | A. V. Osmun 2400 | 23 Apr 1918 | United States of America | Massachusetts | Outside Clark Hall, M. A.… | — | 03423081 |
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| Sclerotinia fructigena (Pers.) Norton | A. V. Osmun 2401 | 02 May 1918 | United States of America | Massachusetts | Hampshire Co. M. A. C.… | — | 03423082 |
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| Puccinia saxifragae Schltdl. | A. V. Osmun 3427 | 07 Dec 1942 | United States of America | Massachusetts | Clark Hall Greenhouse, Amherst. | — | 3442004 |
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