Observation 33072: Scleroderma Pers.

When: 2010-02-02

Collection location: Golden Gate Park, San Francisco, California, USA [Click for map]

Who: Micah Courteau (waynegrompsky)

No specimen available



Proposed Names

25% (4)
Recognized by sight
51% (3)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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I don’t think Scleroderma.
By: Daniel B. Wheeler (Tuberale)
2010-02-12 23:07:23 PST (-0800)

Scleroderma when fresh has extensive rhizomorphs extending into the soil at the base. I don’t see those here. The interior has split into 7 rays, which more closely resembles Geaster or Geastrum. Finally, the outer peridium (the underside of the rays) has small scales on it. While Scleroderma can have those (rarely), it resembles Geaster/Geastrum more in my opinion. I have found Geaster up to 8 inches deep in woody humus, when the peridium is pure white and the gleba has not yet differentiated into spore-bearing material. To me this looks like Geaster after the spore mass (gleba) has already dispersed, probably by rain. Finally, unless the area has been under a complete deluge recently, there should have been some spore residue on the inside of the rays.

Created: 2010-02-02 13:26:46 PST (-0800)
Last modified: 2010-02-02 13:26:46 PST (-0800)
Viewed: 46 times, last viewed: 2019-01-02 05:06:22 PST (-0800)
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