Preferred Name: Pisolithus arrhizus (Scop.) Rauschert
When: 2007-07-31
Collection location: Redlands, CA. USA [Search]
Who: Jim Wood (Hersoldier)
Herbarium specimen available

Notes: This thing grows in my front yard, every year, for the past 7 years. It is the most damp and shaded place in the yard. It starts like a little button and it is perfectly round. Then when it gets to the size in the photos, it splits sort of. I have never let it grow any bigger. I have cut one in half and the inside is dry and it feels like cork. It doesn’t seem to have an odor. Can you please identify it?

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Proposed Name		User		Community Vote
Pisolithus arhizus (Scop.) Rauschert		Hersoldier		(no votes)

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Created: 2007-08-01 19:34:30 By: Nathan Wilson (nathan) Summary: Pisolithus arhizus See the page on Pisolithus arhizus for other examples. It is a fairly variable species, but generally looks like some sort of weird brown lump. The dark balls inside the mushroom are distinctive. In California it is most commonly associated with oaks, but it will grow with many other tree species and is a helpful symbiont for the tree. They are not toxic and can be eaten, but are not recommended.

Observation Created: Wed Aug 01 17:28:26 -0700 2007
Last Modified: Wed Aug 01 19:57:09 -0700 2007 by Jim Wood (Hersoldier)
Viewed: once, last viewed: Sun Nov 02 01:59:17 -0700 2008
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