Displaying 1 - 53 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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| Colletotrichum lagenarium (Pass.) Ellis & Halst. | A. V. Osmun 2181 | 18 May 1917 | United States of America | Massachusetts | Middlesex Co. | — | 3445913 |
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| Corallorhiza maculata (Raf.) Raf. var. maculata | A. V. Osmun 6 | 27 Aug 1903 | United States of America | Connecticut | Litchfield Co. Salisbury | — | 4027723 |
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| Erysiphe polygoni DC. | A. V. Osmun s.n. | 04 Mar 1943 | United States of America | Massachusetts | Hampshire Co. Clark Hall Greenhouse | — | 2939365 |
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| Erysiphe polygoni DC. | A. V. Osmun s.n. | Oct 1910 | United States of America | Massachusetts | Hampshire Co. | — | 2939369 |
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| Uncinula necator (Schwein.) Burrill | A. V. Osmun 2506 | 04 Oct 1918 | United States of America | Massachusetts | Hampshire Co. | — | 2945928 |
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| Phyllactinia guttata (Wallr.:Fr.) Lév. | A. V. Osmun s.n. | 05 Sep 1908 | United States of America | Massachusetts | Amherst | — | 2943032 |
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| Erysiphe cichoracearum | A. V. Osmun s.n. | 1910 | United States of America | Connecticut | Simsbury | — | 2937190 |
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| Erysiphe cichoracearum | A. V. Osmun 2505 | 04 Oct 1918 | United States of America | Massachusetts | Hampshire Co. | — | 2937634 |
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| Erysiphe cichoracearum | A. V. Osmun 2658 | 01 Sep 1919 | United States of America | Massachusetts | Hampshire Co. Clark Hall greenhouse | — | 2937649 |
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| Erysiphe cichoracearum | A. V. Osmun 2838 | Jul 1921 | United States of America | Massachusetts | Franklin Co. | — | 2937659 |
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| Erysiphe graminis DC. | A. V. Osmun 2559 | Jul 1918 | United States of America | Massachusetts | Hampshire Co. | — | 2938594 |
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| Erysiphe graminis DC. | A. V. Osmun 2593 | 28 May 1910 | United States of America | Massachusetts | Hampshire Co. | — | 2938595 |
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| Microsphaera penicillata (Wallr.:Fr.) Lév. | A. V. Osmun | 01 Aug 1925 | United States of America | Massachusetts | Mt. Toby | — | 2941647 |
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| Microsphaera penicillata (Wallr.:Fr.) Lév. | A. V. Osmun | 02 Aug 1924 | United States of America | Massachusetts | North Sunderland | — | 2941830 |
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| Podosphaera leucotricha (Ellis & Everh.) E.S.Salmon | A. V. Osmun s.n. | 27 Oct 1920 | United States of America | Massachusetts | Westfield | — | 2943345 |
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| Urocystis colchici (Schltdl.) Rabenh. | A. V. Osmun s.n. | 31 May 1923 | United States of America | Massachusetts | Wapping, Deerfield | — | 3020176 |
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| Sphaerotheca macularis (Wallr.) Lind | A. V. Osmun s.n. | 11 Jul 1923 | United States of America | Massachusetts | Notch, South Hadley | — | 2944913 |
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| Sphaerotheca macularis (Wallr.) Lind | A. V. Osmun s.n. | 11 Jul 1923 | United States of America | Massachusetts | Notch, South Hadley | — | 2944914 |
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| Sphaerotheca macularis (Wallr.) Lind | A. V. Osmun s.n. | Aug 1921 | United States of America | Massachusetts | Amherst | — | 2944929 |
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| Gymnosporangium clavipes Cooke & Peck | A. V. Osmun 3432 | 14 Jul 1944 | United States of America | Massachusetts | Hampshire Co. Clark Hall, M.… | — | 3011008 |
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| Gymnosporangium juniper-virginianae Schwein. | A. V. Osmun s.n. | Sep 1913 | United States of America | Connecticut | Hartford Co. | — | 3010693 |
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| Gymnosporangium juniper-virginianae Schwein. | A. V. Osmun 28888 | 10 Aug 1922 | United States of America | Massachusetts | Franklin Co. | — | 3010820 |
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| Botryosphaeria quercuum (Schwein.) Sacc. | A. V. Osmun 3136 | 01 Feb 1929 | United States of America | Massachusetts | Hampshire Co. | — | 2980459 |
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| Botryosphaeria quercuum (Schwein.) Sacc. | A. V. Osmun 2556 | 21 Mar 1919 | United States of America | Massachusetts | Hampshire Co. | — | 2980460 |
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| Puccinia allii (DC.) F.Rudolphi | A. V. Osmun s.n. | — | United States of America | Connecticut | Botanic Garden, Agricultural College, Storrs | — | 3005844 |
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| Puccinia coronata Corda var. coronata | A. V. Osmun 2969 | 25 Jun 1924 | United States of America | Massachusetts | Middlesex Co. | — | 2995926 |
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| Puccinia coronata Corda var. coronata | A. V. Osmun 3552 | 24 May 1949 | United States of America | Massachusetts | Franklin Co. (Long Plain) | — | 2995932 |
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| Gymnosporangium juniper-virginianae Schwein. | A. V. Osmun s.n. | 04 Aug 1920 | United States of America | Virginia | — | 3010958 |
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