Observation 82691: Polyporus tuberaster (Jacq. ex Pers.) Fr.

When: 2011-11-14

Collection location: Chabot Park, San Leandro, California, USA [Click for map]

Who: Debbie Viess (amanitarita)

Specimen available

exact same area as this strangely fractious sighting:


apparently, and as I suspected, P. tuberaster does NOT have a sclerotium when growing on wood (as opposed to its sometimes massive sclerotium when growing on the ground).


fruit body ends abruptly as shown in photo. log host soft and thoroughly rotted (easily picked apart with my fingers).

Proposed Names

86% (1)
Eye3 Eyes3
Recognized by sight: fleshy stalked polypore, with large, irregularly shaped, decurrent pores, and a scaled cap, growing on wood and lacking a tuber/sclerotium. only remains of white rot in stick; look Ma, no tuber!

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Debbie Viess (amanitarita)
2011-11-17 11:19:53 EST (-0500)
By: Darvin DeShazer (darv)
2011-11-17 01:04:51 EST (-0500)

Was there mycelial threads going through the soft punky stick and into the ground, down to a buried tuber?

Created: 2011-11-16 19:53:24 EST (-0500)
Last modified: 2018-07-16 11:43:42 EDT (-0400)
Viewed: 81 times, last viewed: 2018-07-16 12:21:21 EDT (-0400)
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