Observation 14888: Armillaria (Fr.) Staude

When: 2008-12-03

Collection location: Marble Mountain Ranch, Siskiyou Co., California, USA [Click for map]

Who: John Harlan (harlanx6)

No specimen available

This pair were growing on the bark of a downed tanoak.



Proposed Names

83% (3)
Recognized by sight: Hairy cap, cottony partial veil, whitish stalk, growth on wood. Formerly Armillariella. Species complex often listed under A. mellea.

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Dave W (Dave W)
2008-12-05 10:25:42 PST (-0800)

Sorry, I didn’t notice the cross-sectional photo. Mushrooms in the A. mellea have flesh that does sometimes stain brownish or reddish-brown; but I haven’t seen this happen as uniformly as seen in the photo. Usually, the reddish-brown staining occurs around insect tunnels in stalk flesh, or in the flesh of older specimens. The cross-sectional cut also appears to show the tough/fibrous outer coating and the more cottony “stuffing” which are characteristics of Armillaria mellea type mushrooms. Dave in NE PA

If this identical to earlier collection
By: Daniel B. Wheeler (Tuberale)
2008-12-04 14:13:15 PST (-0800)

need to cut stipe (stem) in half to show the brilliant red coloration, which would be quite different from any Armillaria I’ve seen before.

Created: 2008-12-03 18:01:01 PST (-0800)
Last modified: 2008-12-03 18:01:01 PST (-0800)
Viewed: 62 times, last viewed: 2018-12-20 13:07:10 PST (-0800)