Observation 20779: Ganoderma annulare (Fries) Gilbertson

When: 2009-02-28

Collection location: Los Trancos Preserve, Palo Alto, California, USA [Click for map]

Who: Douglas Smith (douglas)

No specimen available

Found on either black oak or big leaf maple.

Some big conk-y like of thing. I not a big conk-y like of guy, not sure what this one is…

Species Lists


Proposed Names

29% (1)
Recognized by sight
31% (2)
Used references: Gilbertson, R. L. and L. Ryvarden. 1986. North American Polypores Vol. 1. Fungiflora, Oslo, Norway. 433p.
Mycologia 53: 505. 1961

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= Observer’s choice
= Current consensus


Add Comment
By: Paul Derbyshire (Twizzler)
2009-05-02 00:12:03 CDT (-0400)

If this sort of shape (stacked, fused surfaces of revolution) is characteristic of this species, perhaps the name Ganoderma roswellii would have been a better choice for the taxonomists to make? :-)

By: Shane Marsh (Mushane)
2009-05-01 20:01:31 CDT (-0400)

Yeah, Looks a bit like Ganoderma applanatum

I would say remove it from the tree and take a pic of the underside, but removing it would require a jackhammer or splitting wedge…haha

Some sort of Ganoderma maybe
By: Gerhard Koller (Gerhard)
2009-05-01 18:03:20 CDT (-0400)

I would suggest … but I’m not really convinced of that:)

Created: 2009-05-01 05:32:20 CDT (-0400)
Last modified: 2011-05-09 21:21:54 CDT (-0400)
Viewed: 83 times, last viewed: 2019-01-28 06:13:26 CST (-0500)
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