Observation 35021: Clathrus ruber P. Micheli ex Pers.

When: 2010-01-28

Collection location: Greer Park, Palo Alto, California, USA [Click for map]

Who: Len (placeport)

No specimen available

An strange find. These tuber-like fungi were found on the ground under mixed conifers near a park. They are dense, heavy and solid. No particular truffly odor but the specimens were immature. Outside was close to slightly dirty pure white. Looks somewhat like photographs of Tuber oregonensis Oregon white truffle or Tuber gibbosum but the gleba look thicker and and somewhat translucent. The fruitbody radiated outward from a point looking somewhat like a steamed dumpling, with creases radiating out from a central point. They seem far too big to be Tuber californicum.

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Proposed Names

83% (3)
Recognized by sight: geometric whitish outer casing, immature gleba inside. here’s what they look like when they mature: http://www.bayareamushrooms.org/...

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I agree with the naming as Clathrus ruber.
By: Len (placeport)
2010-03-23 16:24:37 CDT (-0400)

My observations match the descriptions and references posted by amanitarita. Thanks! The geometricity of the outer surface was not so pronounced or clear as an in other on-line images. Perhaps that becomes more pronounced with maturity. These specimens, collected by a friend who lives nearby, never reached a stage of maturity sufficient to develop any objectionable odors. It seems they are spreading throughout Palo Alto. I think I am going to incinerate the frozen specimens I kept.

Created: 2010-03-23 01:53:21 CDT (-0400)
Last modified: 2011-05-01 11:34:21 CDT (-0400)
Viewed: 100 times, last viewed: 2019-02-02 08:23:39 CST (-0500)
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