Displaying 1 - 50 out of 232 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | ||
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| Clematis orientalis L. | J. C. Arthur 1 | 31 Jul 1912 | United States of America | Colorado | Ouray Co. | — | 2746015 |
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| Botrychium simplex E.Hitchc. | J. C. Arthur 2 | 29 Jul 1912 | United States of America | Colorado | Ouray Co. Wooded slopes east… | — | 3526140 |
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| Ustilago avenae (Pers.) Rostr. | J. C. Arthur 2 | 1893 | United States of America | Indiana | Tippecanoe Co. | — | 03018630 |
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| Ustilago avenae (Pers.) Rostr. | J. C. Arthur 2 | 1893 | United States of America | Indiana | Tippecanoe Co. | — | 3018634 |
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| Ustilago avenae (Pers.) Rostr. | J. C. Arthur 2 | 1893 | United States of America | Indiana | Tippecanoe Co. | — | 3018637 |
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| Ustilago avenae (Pers.) Rostr. | J. C. Arthur 2 | 1893 | United States of America | Indiana | Tippecanoe Co. | — | 3018638 |
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| Ustilago avenae (Pers.) Rostr. | J. C. Arthur 3 | 1893 | United States of America | Indiana | Tippecanoe Co. | — | 3018622 |
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| Ustilago neglecta Niessl | J. C. Arthur 3 | 1893 | United States of America | Indiana | Tippecanoe Co. | — | 3016571 |
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| Ustilago panici-glauci G.Winter | J. C. Arthur 3 | 1893 | United States of America | Indiana | Tippecanoe Co. | — | 03016937 |
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| Packera neomexicana var. mutabilis (Greene) W.A.Weber & Á.Löve | J. C. Arthur 3 | 26 Jul 1912 | United States of America | Colorado | Ouray Co. | — | 3117535 |
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| Ustilago tritici (Pers.) Rostr. | J. C. Arthur 4 | 1893 | United States of America | Indiana | Tippecanoe Co. | — | 3015910 |
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| Ustilago tritici (Pers.) Rostr. | J. C. Arthur 4 | 1893 | United States of America | Indiana | Tippecanoe Co. | — | 3015958 |
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| Ustilago tritici (Pers.) Rostr. | J. C. Arthur 4 | 1893 | United States of America | Indiana | Tippecanoe Co. | — | 3015972 |
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| Trametes versicolor (L.:Fr.) Lloyd | J. C. Arthur 5 | 11 May 1906 | United States of America | Indiana | Tippecanoe Co. Lafayette. | — | 1984686 |
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| Carex tribuloides var. cristata Wahlenb. | J. C. Arthur 20 | 18 Jul 1877 | United States of America | Iowa | Story Co. | — | 2307646 |
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| Phellinus everhartii (Ellis & Galloway) A.Ames | J. C. Arthur 22 | 06 Apr 1907 | United States of America | Illinois | Lake Co. Lake Forest | — | 3025864 |
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| Lycoperdon americanum Demoulin | J. C. Arthur 22 | Sep 1889 | United States of America | Indiana | Vermillion Co. | — | 72115 | ||
| Fontinalis dalecarlica Bruch & Schimp. | J. C. Arthur 30 | 21 Jul 1886 | United States of America | Minnesota | Vermilion Lake | — | 490160 | ||
| Gloeosporium toxicodendri Ellis & G.Martin | J. C. Arthur 35 | 30 Sep 1882 | United States of America | Iowa | Floyd Co. | type | 00937277 |
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| Cercospora racemosa Ellis & G.Martin | J. C. Arthur 48 | 27 Sep 1882 | United States of America | Iowa | Floyd Co. | type | 00838158 |
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| Chaetomella perforata Ellis & Everh. | J. C. Arthur 57 | Sep 1882 | United States of America | Iowa | Story Co. | lectotype | 00883467 |
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| Chaetomella perforata Ellis & Everh. | J. C. Arthur 57 | Sep 1882 | United States of America | Iowa | Story Co. | lectotype | 00883466 |
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| Carex paupercula Michx. | J. C. Arthur 60 | 21 Sep 1909 | United States of America | Maine | Knox Co. Isle au Hart. | — | 2295215 |
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| Nectria peziza (Tode) Fr. | J. C. Arthur 64 | Nov 1882 | United States of America | Iowa | No locality. | — | 04470594 | ||
| Nectria peziza (Tode) Fr. | J. C. Arthur 64 | Nov 1882 | United States of America | Iowa | No locality. | — | 04277250 | ||
| Diatrype tiliacea Ellis | J. C. Arthur 86 | Oct 1882 | United States of America | Iowa | Story Co. | type | 00928607 |
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| Peronospora effusa (Grev.) Tul. | J. C. Arthur 118 | 14 Jul 1883 | United States of America | Illinois | Chicago | — | 1960422 |
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| Leptosphaeria clavicarpa Ellis & Everh. | J. C. Arthur 120 | Jan 1884 | United States of America | Iowa | Spirit Lake | — | 00927717 |
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| Leptosphaeria clavicarpa Ellis & Everh. | J. C. Arthur 120 | Jan 1884 | United States of America | Iowa | Spirit Lake | holotype | 00927718 |
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| Septoria consimilis Ellis & G.Martin | J. C. Arthur 126 | 15 Jul 1884 | United States of America | New York | Ontario Co. | syntype | 00838312 |
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| Catinella nigro-olivacea (Schwein.) Durand | J. C. Arthur 189.86 | 23 Jul 1886 | United States of America | Minnesota | St. Louis River | — | 2971350 |
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| Stereum gausapatum (Fr.:Fr.) Fr. | J. C. Arthur 218 | 24 Jul 1886 | United States of America | Minnesota | Vermilion Lake. | — | 1995486 |
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| Microsphaera dubyi Lév. | J. C. Arthur 242 | 25 Jul 1886 | United States of America | Minnesota | Vermilion Lake | — | 2941241 |
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| Pezicula ocellata (Pers.) Seaver | J. C. Arthur 388[?] | 18 Jul 1886 | United States of America | Minnesota | Vermilion Lake | — | 2974149 |
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| Puccinia windsoriae Schwein. | J. C. Arthur 471 | 14 Sep 1896 | United States of America | Indiana | Tippecanoe Co. | — | 332441 | ||
| Bromus ciliatus L. | J. C. Arthur 734 | 1881 | United States of America | Iowa | — | 1634382 |
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| Phyllachora ambrosiae (Berk. & M.A.Curtis) Sacc. | J. C. Arthur 1665 | Sep 1882 | United States of America | Iowa | Floyd Co. | — | 3389249 |
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| Phyllachora ambrosiae (Berk. & M.A.Curtis) Sacc. | J. C. Arthur 1665 | Sep 1882 | United States of America | Iowa | Floyd Co. | — | 3389250 |
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| Bremia lactucae Regel | J. C. Arthur 1885-10-02 | — | United States of America | New York | Ontario Co. Geneva. | — | 1959226 |
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| Xanthium strumarium var. canadense (Mill.) Torr. & A.Gray | J. C. Arthur 2604 | 14 Sep 1911 | United States of America | Colorado | Pueblo Co. Lake Minnequa | — | 3199872 |
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| Xanthium strumarium var. canadense (Mill.) Torr. & A.Gray | J. C. Arthur 2606 | 14 Sep 1911 | United States of America | Colorado | Pueblo Co. Lake Minnequa | — | 3199870 |
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| Puccinia montanensis Ellis | J. C. Arthur 3001 | 19 Sep 1911 | United States of America | Colorado | Boulder | — | 292568 | ||
| Puccinia cnici-oleracei Pers. | J. C. Arthur 3786 | 26 Jul 1886 | United States of America | Minnesota | — | 2996496 |
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| Cirsium scariosum Nutt. | J. C. Arthur 5004 | 01 Aug 1912 | United States of America | Colorado | Ridgeway. | — | 2053197 |
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| Puccinia magnusiana Körn. | J. C. Arthur 5024 | 12 Aug 1898 | United States of America | Iowa | Spirit Lake | — | 332412 | ||
| Leucostoma niveum (Hoffm.) Höhn. | J. C. Arthur 10376 | 21 Jul 1886 | United States of America | Minnesota | Vermilion Lake | — | 2933005 |
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| Albugo ipomoaea-panduratae (C.Schweinf.) D.B.Swingle | J. C. Arthur 21176 | Oct 1921 | — | — | — | 2767020 |
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| Puccinia caricina f. ribes DC. | J. C. Arthur 21386 | 28 Jul 1886 | United States of America | Minnesota | Vermilion Lake. | — | 3000633 |
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| Porella platyphylla (L.) Pfeiff. | J. C. Arthur 114A | 22 Jul 1886 | United States of America | Minnesota | Cass Co. Vermilion Lake | — | 249656 | ||
| Apopellia endiviifolia (Dicks.) Nebel & D.Quandt | J. C. Arthur 175A | 24 Jul 1886 | United States of America | Minnesota | Vermilion Lake | — | 262621 |