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Armillaria ostoyae

(Romagn.) Herink

a fungus

GNRUnranked Found in 18 roadless areas NatureServe Explorer →
GNRUnrankedGlobal Rank
Identity
Unique IDELEMENT_GLOBAL.2.1063324
Element CodeNFAGA0F020
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryFungus
KingdomFungi
PhylumBasidiomycota
ClassBasidiomycetes
OrderAgaricales
FamilyTricholomataceae
GenusArmillaria
Concept Reference
Index Fungorum and Species Fungorum. 2018. In Index Fungorum-Species Fungorum (https://indexfungorum.org and https://speciesfungorum.org) database export on 16 June 2018. Royal Botanic Gardens, Kew.
Taxonomic Comments
Mycobank (2025) include Armillaria obscura and Armillaria ostoyae in Armillaria solidipes, while Species Fungorum (2025) treat them as distinct.
Ecology & Habitat
Other Nations (2)
CanadaN5
ProvinceRankNative
AlbertaS5Yes
ManitobaS4Yes
QuebecSNRYes
British ColumbiaS3Yes
SaskatchewanS4Yes
Island of NewfoundlandSNRYes
United StatesNNR
Plant Characteristics
Economic Value (Genus)No
Roadless Areas (18)
Colorado (1)
AreaForestAcres
San MiguelSan Juan NF64,263
New Mexico (5)
AreaForestAcres
Black CanyonSanta Fe National Forest1,922
Bull - Of - The - WoodsCarson National Forest488
San Pedro ParksSanta Fe National Forest5,824
Tesuque CreekSanta Fe National Forest810
Wheeler Peak WildernessCarson National Forest2,677
Utah (4)
AreaForestAcres
0419020Ashley National Forest355,684
High Uintas (UT)Wasatch-Cache National Forest102,398
Horse Mountain - Mans PeakManti-Lasal National Forest22,159
LakesWasatch-Cache National Forest121,967
Washington (7)
AreaForestAcres
Big Lava BedGifford Pinchot National Forest19,043
Glacier Peak LMt Baker-Snoqualmie National Forest14,084
Grassy TopIdaho Panhandle National Forests13,485
Green MountainOlympic National Forest4,617
Harvey CreekColville National Forest10,140
Red MountainGifford Pinchot National Forest2,992
Silver StarGifford Pinchot National Forest7,779
Wisconsin (1)
AreaForestAcres
09011 - Flynn Lake Study AreaChequamegon-Nicolet National Forest5,951
References (4)
  1. Index Fungorum and Species Fungorum. 2018. <i>In</i> Index Fungorum-Species Fungorum (<a href="https://indexfungorum.org" target="_blank">https://indexfungorum.org</a> and <a href="https://speciesfungorum.org" target="_blank">https://speciesfungorum.org</a>) database export on 16 June 2018. Royal Botanic Gardens, Kew.
  2. Index Fungorum and Species Fungorum. 2025. <i>In</i> Index Fungorum-Species Fungorum (<a href="https://indexfungorum.org" target="_blank">https://indexfungorum.org</a> and <a href="https://speciesfungorum.org" target="_blank">https://speciesfungorum.org</a>) database export on 29 September 2025. Royal Botanic Gardens, Kew.
  3. Kroeger, P. and S.M. Berch. 2017. Macrofungus species of British Columbia. Prov. B.C., Victoria, B.C. Tech. Rep. 108. Available online: &lt;<a href="https://www.for.gov.bc.ca/hfd/pubs/Docs/Tr/TR108.htm">https://www.for.gov.bc.ca/hfd/pubs/Docs/Tr/TR108.htm</a>&gt;.
  4. Trudell, S., and J. Ammirati. 2009. Mushrooms of the Pacific Northwest. Timber Press Inc., Portland. 349 pp.