Observation 120196: Scleroderma Pers.

When: 2012-12-16

Collection location: Turlock, California, USA [Click for map]

Who: Randy Longnecker (Randy L.)

No specimen available

Proposed Names

61% (2)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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I can help narrow down the possibilities,
By: Daniel B. Wheeler (Tuberale)
2012-12-16 23:44:40 CST (-0600)

but you’ll have to decide which fits best yourself, Randy.

Using Kuo’s Scleroderma Key at Mushroom Expert, there are three possibilities that could match this observation.

1) Scleroderma areolatum, a relatively thin-skinned Scleroderma which has a cracked covering. I believe this may be this obseration, but cannot prove it.

2) S. sinnamariense (has an inner skin surface which should be bright sulphur yellow). I don’t see this, but offer it for comparison.

3) S. michiganense Not typically found west of the Rocky Mountains.

All Sclerodermas are mycorrhizal. Knowing what the host plant is might help make a final determination of species.

There are two striking features about this observation in my opinion. 1) The deeply cracked top of the cap, which eventually will open into the gleba, allowing spores to disperse through cracks at the top. This look like scales, NOT warts to me. 2) The bright yellow mycelium at the base of the sporocarp in your first photo. Most Sclerodermas do not have this bright a yellow for mycelium, although the cap can be bright yellow (S. citrinum, with warts) or the interior skin can be bright sulphur yellow (S. sinnamariense).

Created: 2012-12-16 17:17:52 CST (-0600)
Last modified: 2012-12-16 23:45:09 CST (-0600)
Viewed: 21 times, last viewed: 2017-06-19 22:39:44 CST (-0600)
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