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Any ideas? Growing on an oak log. Gills appear whole at margins then become toothy.

[admin – Sat Aug 14 02:05:08 +0000 2010]: Changed location name from ‘Redwood Park Oakland, CA’ to ‘Redwood Regional Park, Oakland, California, USA’


Proposed Names

23% (3)
Recognized by sight: On wood, rings of colors on top surface, “gills” randomized.

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= Observer’s choice
= Current consensus


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Maybe Daedalea
By: Darvin DeShazer (darv)
2008-02-28 07:25:40 CET (+0100)

It looks too ‘chunky’ for Lenzites. Also the top of the cap should be zoned and tomentose like Trametes hirsuta. The ‘teeth’ and thick body leads to Daedalea quercina which can be separated fro Lenzites by the tips of the hyphae in the ‘gills’. In Lenzites the tips of the binding hyphae are pointed and long, so they resemble a sword.

Take a look at Lenzites
By: Douglas Smith (douglas)
2008-02-27 20:24:06 CET (+0100)

Could be Lenzites, take a look and see. See if the fruiting body is fairly tough and slightly rubbery, and hard to peel of the wood. There are other polypores that dev. “gills”, but those tend to have more randomized gill structures. But Lenzites would be my first guess (but only a guess).