Displaying 1 - 75 out of 5971 Object(s)
| Taxon | Collector | Date | Country | State/Province | Locality | Type Status | Barcode | Notice | ||
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| Acolium inquinans (Sm.) A.Massal. | R. E. Halling 632 | 05 Apr 1975 | United States of America | California | Lake Co. ~1 mi west… | — | ||||
| Acrobolbus urvilleanus (Mont.) Trevis. | R. E. Halling 5799 | 05 Mar 1988 | Chile | Magallanes | Peninsula Brunswick. Laguna Parrillar. | — |
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| Acrobolbus urvilleanus (Mont.) Trevis. | R. E. Halling 5747 | 25 Feb 1988 | Argentina | Tierra del Fuego | Dept. Ushuaia, forest below Glacier… | — |
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| Acrolejeunea torulosa (Lehm. & Lindenb.) Schiffn. | R. E. Halling 4367 | 24 Jan 1985 | Venezuela | — | Vicinity of San Carlos de… | — |
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| Adelothecium bogotense (Hampe) Mitt. | R. E. Halling 5035 | 11 Nov 1986 | Colombia | Antioquia | Guarne Mun. Centro Experimental Piedras… | — |
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| Agaricus arvensis Schaeff. | R. E. Halling 3709 | 13 Oct 1983 | United States of America | New York | Bronx Co. main entrance (west)… | — |
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| Agaricus arvensis Schaeff. | R. E. Halling 3709 | 13 Oct 1983 | United States of America | New York | Bronx Co. main entrance (west)… | — |
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| Agaricus augustus Fr. | R. E. Halling 7114 | 05 Sep 1993 | United States of America | New Mexico | Taos Co. Red River, 1.5… | — |
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| Agaricus bitorquis (Quél.) Sacc. | R. E. Halling 3722 | 27 Oct 1983 | United States of America | New York | Bronx Co. near parking lot… | — |
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| Agaricus californicus Peck | R. E. Halling 3746 | 26 Dec 1983 | United States of America | California | San Francisco Co. Campus of… | — |
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| Agaricus californicus Peck | R. E. Halling 5093 | 08 Jan 1987 | United States of America | California | San Francisco Co. Campus of… | — |
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| Agaricus campestris L.:Fr. | R. E. Halling 5773 | 28 Feb 1988 | Argentina | Tierra del Fuego | Rio Grande (Dept.). N. side… | — |
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| Agaricus micromegethus Peck | R. E. Halling 3684 | 02 Oct 1983 | United States of America | New York | Bronx Co. New York Botanical… | — |
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| Agaricus micromegethus Peck | R. E. Halling 3703 | 09 Oct 1983 | United States of America | Massachusetts | Franklin Co. Long Plain Road,… | — |
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| Agaricus micromegethus Peck | R. E. Halling 3708 | 13 Oct 1983 | United States of America | New York | Bronx Co. East of Watson… | — |
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| Agaricus Murrill | R. E. Halling 9793 | 15 Feb 2013 | Australia | Queensland | Girraween National Park, Bald Rock… | — |
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| Agaricus praeclaresquamosus A.E.Freeman | R. E. Halling 5703 | 13 Dec 1987 | United States of America | California | Marin Co. Pt. Reyes National… | — |
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| Agaricus praeclaresquamosus A.E.Freeman | R. E. Halling 6966 | 23 Nov 1992 | United States of America | California | Mendocino Co. ca. 20 mi… | — |
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| Agaricus rubribrunnescens Murrill | R. E. Halling 4833 | 28 Aug 1986 | United States of America | New York | Bronx Co. Bronx, New York… | — |
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| Agaricus semotus Fr. | R. E. Halling 6686 | 23 Nov 1991 | United States of America | California | Mendocino Co. Jackson State Forest,County… | — |
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| Agaricus silvicola (Vittad.) Sacc. | R. E. Halling 4682 | 08 Jun 1986 | United States of America | California | Sierra Co. Hwy. 49, Sierra… | — |
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| Agaricus silvicola (Vittad.) Sacc. | R. E. Halling 3121 | 23 Aug 1979 | United States of America | Maine | Piscataquis Co. Lower Togue Pond,… | — |
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| Agaricus silvicola (Vittad.) Sacc. | R. E. Halling 5344 | 13 Jun 1987 | United States of America | California | Sierra Co. 5 miles south… | — |
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| Agaricus silvicola (Vittad.) Sacc. | R. E. Halling 3974 | 08 Dec 1984 | United States of America | California | Marin Co. Alpine Lake, Watershed,… | — |
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| Agaricus silvicola (Vittad.) Sacc. | R. E. Halling 3054 | 16 Aug 1979 | United States of America | Maine | Piscataquis Co. Lower Togue Pond… | — |
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| Agaricus smithii Kerrigan | R. E. Halling 6727 | 27 Nov 1991 | United States of America | California | Humboldt Co. Patrick's Point State… | — |
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| Agaricus subrutilescens (Kauffman) Hotson & D.E.Stuntz | R. E. Halling 5105 | 09 Jan 1987 | United States of America | California | Yuba Co. Bullard's Bar Recreation… | — |
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| Agaricus subrutilescens (Kauffman) Hotson & D.E.Stuntz | R. E. Halling 6667 | 22 Nov 1991 | United States of America | California | Mendocino Co. Jackson State Forest,… | — |
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| Agaricus subrutilescens (Kauffman) Hotson & D.E.Stuntz | R. E. Halling 4005 | 07 Dec 1984 | United States of America | California | Yuba Co. Bullard's Bar Recreation… | — |
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| Agaricus xanthoderma Genev. | R. E. Halling 3705 | 11 Oct 1983 | United States of America | New York | Bronx Co. West of Museum… | — |
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| Agrocybe arvalis (Fr.) Singer | R. E. Halling 10090 | 13 Sep 2016 | United States of America | New York | Bronx Co. The New York… | — |
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| Agrocybe arvalis (Fr.) Singer | R. E. Halling 3685 | 02 Oct 1983 | United States of America | New York | Bronx Co. West of Watson… | — |
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| Agrocybe dura (Fr.) Singer | R. E. Halling 2111 | 17 Jul 1977 | United States of America | Massachusetts | Hampshire Co. Amherst, University of… | — |
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| Agrocybe erebia (Fr.) Kühner | R. E. Halling 3713 | 15 Oct 1983 | United States of America | New York | Bronx Co. Path side, Twin… | — |
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| Agrocybe praecox (Pers.:Fr.) Fayod | R. E. Halling 2975 | 08 Aug 1979 | United States of America | Maine | Piscataquis Co. Frost Pond | — |
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| Agrocybe praecox (Pers.:Fr.) Fayod | R. E. Halling 2974 | 08 Aug 1979 | United States of America | Maine | Piscataquis Co. Frost Pond | — |
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| Agrocybe praecox (Pers.:Fr.) Fayod | R. E. Halling 1954 | 15 Jun 1977 | United States of America | Massachusetts | Hampshire Co. Vicinity of Thompson… | — |
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| Agrocybe praecox (Pers.:Fr.) Fayod | R. E. Halling 2867 | 16 July 79 | United States of America | Maine | Piscataquis Co. Ripogenus Dam | — |
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| Agrocybe praecox (Pers.:Fr.) Fayod | R. E. Halling 2976 | 08 Aug 1979 | United States of America | Maine | Piscataquis Co. Frost Pond, along… | — |
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| Agrocybe praecox (Pers.:Fr.) Fayod | R. E. Halling 3022 | 12 Aug 1979 | United States of America | Maine | Piscataquis Co. Rum Brook, Baxter… | — |
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| Agrocybe praecox (Pers.:Fr.) Fayod | R. E. Halling 4654 | 26 May 1986 | United States of America | New York | Bronx Co. New York Botanical… | — |
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| Agrocybe praecox (Pers.:Fr.) Fayod | R. E. Halling 2961 | 06 Aug 1979 | United States of America | Maine | Piscataquis Co. Pray's Ripogenus Dam | — |
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| Agrocybe semiorbicularis (Bull.:Fr.) Fayod | R. E. Halling 5350 | 26 Jun 1987 | United States of America | New York | Bronx Co. New York Botanical… | — |
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| Agrocybe smithii Watling & H.E.Bigelow | R. E. Halling 1936 | 10 Jun 1977 | United States of America | Massachusetts | Hampshire Co. Amherst, Campus of… | — |
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| Agrocybe smithii Watling & H.E.Bigelow | R. E. Halling 1937 | 13 Jun 1977 | United States of America | Massachusetts | Hampshire Co. Amherst, Campus of… | — |
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| Agrocybe smithii Watling & H.E.Bigelow | R. E. Halling 3470 | 03 Jun 1982 | United States of America | Massachusetts | Norfolk Co. Near Cambridge Public… | — |
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| Albatrellus | R. E. Halling 8447 | 26 Jun 2003 | Costa Rica | San José | Dota (Canton). San Gerardo: on… | — |
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| Albatrellus | R. E. Halling 8638 | 15 Jun 2004 | Costa Rica | San José | Dota (Canton). ±5 km SW… | — |
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| Albatrellus | R. E. Halling 8386 | 11 Jun 2003 | Costa Rica | San José | Dota (Canton). ±5 km SW… | — |
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| Albatrellus peckianus (Cooke) Niemelä | R. E. Halling 7979 | — | Costa Rica | San José | Dota (Canton). ±5 km SW… | — |
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| Alboleptonia | R. E. Halling 9671 | 08 Mar 2012 | Australia | Queensland | W of Brisbane, D'Aguilar National… | — |
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| Alboleptonia sericella (Peck) Largent | R. E. Halling 6707 | 25 Nov 1991 | United States of America | California | Mendocino Co. Russian Gulch State… | — |
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| Alectoria sarmentosa (Ach.) Ach. subsp. sarmentosa | R. E. Halling 437 | 09 Mar 1975 | United States of America | California | Mendocino Co. Jackson State Forest,… | — | ||||
| Aleuria aurantia (Fr.) Fuckel | R. E. Halling 7987 | 05 Jul 2000 | Costa Rica | San José | Pérez Zeledón (Canton). Cuerici Biological… | — |
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| Aleuria aurantia (Fr.) Fuckel | R. E. Halling 9932 | 05 May 2014 | New Zealand | Canterbury | South Island. Arthur's National Park,… | — |
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| Aleuria aurantia (Pers.) Fuckel | R. E. Halling s.n. | 19 Oct 1983 | United States of America | New York | Bronx Co. Rhododendron area east… | — |
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| Aleuria aurantia (Pers.) Fuckel | R. E. Halling 3929 | 30 Jul 1984 | Australia | Queensland | Lamington National Park, near O'Reilly’s… | — |
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| Alpova alexsmithii Trappe | R. E. Halling 6690 | 23 Nov 1991 | United States of America | California | Mendocino Co. Jackson State Forest,… | — |
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| Alpova C.W.Dodge | R. E. Halling 7325 | 21 Jun 1994 | Costa Rica | San José | Dota (Canton). ±5 km SW… | — |
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| Alpova C.W.Dodge | R. E. Halling 7192 | 24 Nov 1993 | Costa Rica | San José | Dota (Canton). ±5 km SW… | — |
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| Alpova C.W.Dodge | R. E. Halling 8684 | 09 May 2005 | Australia | Victoria | Colac-Otway Shire. Colac Otway Shire,… | — |
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| Alpova diplophloeus (Zeller & C.W.Dodge) Trappe & A.H.Sm. | R. E. Halling 8260 | 06 Jul 2001 | Costa Rica | Cartago | El Guarco, Tapanti. Parque Nacional… | — |
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| Alpova diplophloeus (Zeller & C.W.Dodge) Trappe & A.H.Sm. | R. E. Halling 8334 | 15 Nov 2002 | Costa Rica | Cartago | Madre Selva. km 64 of… | — | ||||
| Alpova diplophloeus (Zeller & C.W.Dodge) Trappe & A.H.Sm. | R. E. Halling 8197 | 20 Jun 2001 | Costa Rica | Cartago | El Guarco, Tapanti. Parque Nacional… | — | ||||
| Alpova diplophloeus (Zeller & C.W.Dodge) Trappe & A.H.Sm. | R. E. Halling 7988 | 05 Jul 2000 | Costa Rica | San José | Pérez Zeledón (Canton). Cuerici Biological… | — |
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| Alpova olivaceotinctus (A.H.Sm. in A.H.Sm. & Zeller) Trappe | R. E. Halling 6742 | 28 Nov 1991 | United States of America | California | Mendocino Co. Jackson state Forest,… | — |
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| Alpova olivaceotinctus (A.H.Sm. in A.H.Sm. & Zeller) Trappe | R. E. Halling 5112 | 01 Jan 1987 | United States of America | California | Yuba Co. Bullard's Bar Recreation… | — |
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| Alpova trappei Fogel | R. E. Halling 4712 | 13 Jun 1986 | United States of America | California | Sierra Co. Highway 49, near… | — |
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| Alpova trappei Fogel | R. E. Halling 5290 | 06 Jun 1987 | United States of America | California | Sierra Co. Yuba Pass. | — |
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| Alpova trappei Fogel | R. E. Halling 5324 | 11 Jun 1987 | United States of America | California | Sierra Co. Haskell Peak Road… | — |
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| Alpova trappei Fogel | R. E. Halling 5328 | 11 Jun 1987 | United States of America | California | Sierra Co. Haskell Peak Road… | — |
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| Alpova trappei Fogel | R. E. Halling 5318 | 09 Jun 1987 | United States of America | California | Sierra Co. Yuba Pass. | — |
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| Amanita abrupta Peck | R. E. Halling 3671 | 25 Sep 1983 | United States of America | Connecticut | Litchfield Co. Camp Jewell | — | ||||
| Amanita abrupta Peck | R. E. Halling 7261 | 10 Jun 1994 | Costa Rica | San José | Dota (Canton). ±5 km SW… | possible type |
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| Amanita abrupta Peck | R. E. Halling 7319 | 21 Jun 1994 | Costa Rica | San José | Dota (Canton). ±5 km SW… | — |
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