Displaying 1 - 75 out of 553 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Penstemon secundiflorus Benth. ex A.DC. | L. O. Overholts s.n. | 22 Jun 1914 | United States of America | Colorado | Gilpin Co. Rollinsville | — |
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| Cladosporium humile Davis | L. O. Overholts | 06 Sep 1942 | United States of America | Pennsylvania | Huntingdon Co. Ross Run | — |
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| Penstemon rydbergii A.Nelson var. rydbergii | L. O. Overholts s.n. | 23 Jun 1914 | United States of America | Colorado | Tolland | — |
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| Penstemon whippleanus A.Gray | L. O. Overholts s.n. | 07 Jul 1914 | United States of America | Colorado | Tolland | — |
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| Dasyscyphus occidentalis G.G.Hahn & Ayers | L. O. Overholts s.n. | — | Canada | Ontario | Diamond Lake, Temagami Forest Reserve | — |
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| Dasyscyphus virginellus (Cooke) Sacc. | L. O. Overholts 18100 | — | United States of America | Pennsylvania | Centre Co. Sand Spring | — |
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| Dasyscyphus virgineus (Batsch) Gray | L. O. Overholts 12330 | — | United States of America | Pennsylvania | Mount Alto | — |
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| Dasyscyphus virgineus (Batsch) Gray | L. O. Overholts 12128 | 23 Feb 1930 | United States of America | Pennsylvania | Centre Co. Prong Mt. | — |
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| Dasyscyphus willkommii (Hartig) Rehm | L. O. Overholts 7398 | — | United States of America | Pennsylvania | Huntingdon Co. Charter Oak | — |
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| Arachnopeziza aurelia (Pers.) Fuckel | L. O. Overholts | 11 Jun 1918 | United States of America | New Hampshire | Carroll Co. | — |
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| Dasyscyphus | L. O. Overholts 13075 | — | United States of America | Pennsylvania | Huntingdon Co. Ross Run | — |
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| Dasyscyphus | L. O. Overholts 8196 | — | United States of America | Pennsylvania | Hunting, Laurel Run | — |
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| Dasyscyphus agassizii (Berk. & M.A.Curtis) Sacc. | L. O. Overholts s.n. | — | United States of America | New Hampshire | Crawford Notch | — |
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| Dasyscyphus agassizii (Berk. & M.A.Curtis) Sacc. | L. O. Overholts 8140 | — | United States of America | Pennsylvania | Centre Co. Bear Meadows | — |
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| Abortiporus biennis (Bull.:Fr.) Singer | L. O. Overholts 3269 | — | United States of America | Ohio | West Elkton | — |
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| Antrodia | L. O. Overholts 231 | — | United States of America | Ohio | West Elkton | — |
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| Antrodia serialis (Fr.) Donk | L. O. Overholts 3274 | — | United States of America | Pennsylvania | State College | — |
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| Antrodia variiformis (Peck) Donk | L. O. Overholts s.n. | — | United States of America | New Hampshire | Carroll Co. North Conway | — |
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| Antrodia variiformis (Peck) Donk | L. O. Overholts 3267 | — | — | — | — |
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| Antrodia albida (Fr.:Fr.) Donk | L. O. Overholts 83 | — | United States of America | Ohio | Butler Co. Oxford | — |
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| Antrodia crassa (P.Karst.) Ryvarden | L. O. Overholts 4934 | — | Canada | Ontario | Bear Island, Lake Temagami | — |
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| Antrodia heteromorpha (Fr.:Fr.) Donk | L. O. Overholts 5045 | — | United States of America | New Hampshire | Crawford Notch | — |
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| Antrodia malicola (Berk. & M.A.Curtis) Donk | L. O. Overholts 831 | — | United States of America | Missouri | Wicks | — |
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| Antrodia variiformis (Peck) Donk | L. O. Overholts s.n. | — | Canada | Ontario | Bear Island, Lake Temagami | — |
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| Antrodia xantha (Fr.:Fr.) Ryvarden | L. O. Overholts 5201 | — | United States of America | Pennsylvania | Centre Co. Bear Meadows | — |
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| Bjerkandera adusta (Willd.:Fr.) P.Karst. | L. O. Overholts s.n. | 07 May 1918 | United States of America | New Hampshire | Carroll Co. North Conway | — |
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| Bjerkandera fumosa (Pers.:Fr.) P.Karst. | L. O. Overholts s.n. | Oct 1909 | United States of America | Ohio | Butler Co. Oxford | — |
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| Tyromyces galactinus (Berk.) J.Lowe | L. O. Overholts s.n. | — | United States of America | Pennsylvania | Elk Co. Alleghany National Forest | — |
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| Tyromyces galactinus (Berk.) J.Lowe | L. O. Overholts 3247 | — | United States of America | Ohio | Union Co. | — |
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| Tyromyces galactinus (Berk.) J.Lowe | L. O. Overholts 2339 | — | United States of America | Missouri | Pacific | — |
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| Tyromyces galactinus (Berk.) J.Lowe | L. O. Overholts s.n. | — | United States of America | New York | Westchester Co. Mt. Vernon. | — |
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| Tyromyces fissilis (Berk. & M.A.Curtis) Donk | L. O. Overholts | — | United States of America | Louisiana | Ferriday | — |
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| Tyromyces fissilis (Berk. & M.A.Curtis) Donk | L. O. Overholts 10 | — | United States of America | Ohio | Butler Co. Oxford | — |
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| Ceriporia purpurea (Fr.) Donk | L. O. Overholts s.n. | 22 Sep 1935 | United States of America | Pennsylvania | Huntingdon Co. Ross Run | — |
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| Ceriporia spissa (Schwein.:Fr.) Rajchenb. | L. O. Overholts s.n. | 12 Apr 1931 | United States of America | Pennsylvania | Huntingdon Co. Ross Run | — |
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| Ceriporiopsis pannocincta (Romell) Gilb. & Ryvarden | L. O. Overholts s.n. | 27 Oct 1918 | United States of America | Pennsylvania | State College | — |
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| Ceriporiopsis subvermispora (Pilát) Gilb. & Ryvarden | L. O. Overholts s.n. | 06 Sep 1935 | Canada | Ontario | Cattle Id, Lake Timagami | — |
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| Climacocystis borealis (Fr.) Kotl. & Pouzar | L. O. Overholts 3246 | 08 Jul 1916 | United States of America | Pennsylvania | Centre Co. Bear Meadows | — |
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| Coriolopsis gallica (Fr.) Ryvarden | L. O. Overholts 617 | — | United States of America | Missouri | Creve Coeur | — |
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| Coriolopsis gallica (Fr.) Ryvarden | L. O. Overholts 5047 | — | United States of America | New Hampshire | Carroll Co. Dundee. | — |
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| Tyromyces | L. O. Overholts 528 | — | United States of America | Missouri | Saint Louis Co. Creve Coeur | — |
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| Coriolopsis gallica (Fr.) Ryvarden | L. O. Overholts 150 | — | United States of America | Ohio | Butler Co. Oxford | — |
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| Cryptoporus volvatus (Peck) Shear | L. O. Overholts 3254 | — | United States of America | Pennsylvania | Charter Oak | — |
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| Trichaptum biforme (Fr.) Ryvarden | L. O. Overholts s.n. | 14 Oct 1913 | — | — | — |
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| Trichaptum biforme (Fr.) Ryvarden | L. O. Overholts s.n. | Oct 1909 | United States of America | Ohio | Butler Co. Oxford | — |
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| Trichaptum biforme (Fr.) Ryvarden | L. O. Overholts s.n. | 05 Oct 1923 | United States of America | Pennsylvania | Huntingdon Co. Charter Oak | — |
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| Daedaleopsis confragosa (Bolton:Fr.) J.Schröt. | L. O. Overholts s.n. | — | United States of America | New Hampshire | — |
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| Daedaleopsis confragosa (Bolton:Fr.) J.Schröt. | L. O. Overholts s.n. | — | United States of America | Ohio | Butler Co. Oxford | — |
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| Datronia mollis (Sommerf.:Fr.) Donk | L. O. Overholts 4608 | — | United States of America | New Hampshire | Crawford Notch | — |
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| Datronia scutellata (Schwein.) Gilb. & Ryvarden | L. O. Overholts s.n. | 1936 | United States of America | Florida | Hunt, Ross Run | — |
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| Fomitopsis cajanderi (P.Karst.) Kotl. & Pouzar | L. O. Overholts | 26 Jul 1936 | United States of America | Pennsylvania | Centre Co. Alan Seeger Region | — |
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| Agoseris aurantiaca var. purpurea (A.Gray) Cronquist | L. O. Overholts s.n. | 30 Jun 1914 | United States of America | Colorado | Tolland, Colorado | — |
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| Arnica mollis Hook. | L. O. Overholts s.n. | 10 Jul 1913 | United States of America | Colorado | Tolland. | — |
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| Arnica mollis Hook. | L. O. Overholts s.n. | 18 Jul 1914 | United States of America | Colorado | Tolland | — |
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| Antennaria corymbosa E.E.Nelson | L. O. Overholts s.n. | 7-5-1914 | United States of America | Colorado | Tolland. | — |
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| Fomitopsis spraguei (Berk. & M.A.Curtis) Gilb. & Ryvarden | L. O. Overholts s.n. | 03 Aug 1910 | United States of America | Ohio | Butler Co. Oxford | — |
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| Globifomes graveolens (Schwein.) Murrill | L. O. Overholts s.n. | Oct 1910 | United States of America | Ohio | Butler Co. Oxford | — |
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| Gloeophyllum odoratum (Wulfen:Fr.) Imazeki | L. O. Overholts s.n. | 10 Aug 1920 | United States of America | Pennsylvania | Clinton Co. West Port | — |
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| Hapalopilus croceus (Pers.:Fr.) Donk | L. O. Overholts | 18 Aug 1941 | United States of America | Pennsylvania | Huntingdon Co. Alan Seeger Natural… | — |
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| Hapalopilus rutilans (Pers.:Fr.) Murrill | L. O. Overholts 3239 | 22 Nov 1919 | United States of America | Pennsylvania | State College | — |
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| Hapalopilus mutans (Peck) Gilb. & Ryvarden | L. O. Overholts 143 | 15 Oct 1910 | United States of America | Ohio | Butler Co. Oxford | — |
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| Heterobasidion annosum (Fr.) Bref. | L. O. Overholts | 17 May 1942 | United States of America | Pennsylvania | Centre Co. Pine Hall | — |
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| Ischnoderma benzoinum (Wahlenb.:Fr.) P.Karst. | L. O. Overholts s.n. | 1909 | United States of America | Ohio | Butler Co. Oxford | — |
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| Jahnoporus hirtus (Cooke) Nuss | L. O. Overholts s.n. | 26 Aug 1929 | United States of America | Colorado | Notch Park | — |
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| Chondrostereum purpureum (Pers.:Fr.) Pouzar | L. O. Overholts s.n. | 1918 | — | — | — |
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| Cirsium laterifolium (Osterh.) Petr. | L. O. Overholts s.n. | 7-8-1913 | United States of America | Colorado | Rollinsville | — |
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| Lentinus strigosus Schwein.:Fr. | L. O. Overholts s.n. | 02 Jul 1936 | United States of America | Pennsylvania | Centre Co. Pine Hall near… | — |
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| Cantharellus infundibuliformis Fr. | L. O. Overholts 3258 | 11 Jul 1915 | United States of America | Kentucky | Berea, Cow Bell Hollow | — |
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| Cantharellus infundibuliformis Fr. | L. O. Overholts s.n. | 26 Jul 1936 | United States of America | Pennsylvania | Centre Co. Bear Meadows | — |
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| Erigeron compositus var. glabratus Macoun | L. O. Overholts | 18 Jun 1914 | United States of America | Colorado | Gilpin Co. Tolland; on dry… | — |
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| Lenzites betulina (L.:Fr.) Fr. | L. O. Overholts s.n. | 1918 | — | — | — |
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| Erigeron flagellaris A.Gray | L. O. Overholts | 09 Jul 1914 | United States of America | Colorado | Boulder Co. Lake Eldora; on… | — |
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| Lenzites betulina (L.:Fr.) Fr. | L. O. Overholts s.n. | 06 Jun 1925 | United States of America | Pennsylvania | Trout Run | — |
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| Erigeron peregrinus subsp. callianthemus (Greene) Cronquist | L. O. Overholts | 01 Jul 1913 | United States of America | Colorado | Gilpin Co. Tolland; in moist… | — |
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| Erigeron peregrinus subsp. callianthemus (Greene) Cronquist | L. O. Overholts | 12 Jul 1914 | United States of America | Colorado | Gilpin Co. Tolland; along roadside | — |
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