Observation 84466: Scleroderma Pers.

When: 2011-12-10

Collection location: Sebastopol, Sonoma Co., California, USA [Click for map]

Who: Darvin DeShazer (darv)

No specimen available

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Proposed Names

55% (2)
Eye3 Eyes3
Recognized by sight
-7% (4)
Recognized by sight: For Sceroderma the interior should be all dark at an early age and the outer peridium is very thick with the right markings on the service.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Thanks for your comments, Steph.
By: Daniel B. Wheeler (Tuberale)
2014-01-21 13:22:43 CST (-0600)

Scleroderma does ripen from the inside outward.

This puffball is more mature at the glebal extremities (just below the peridium) rather than the center. The colors are darker where more mature.

That does not bode well for Scleroderma.

Oddly, the rounded “center” of the sporocarp is rather bulbous, reminiscent of Radiigera (which this is NOT). Radiigera is rarely epigeous, and; the sterile center is a capitium, usually located in the lower 1/3 of the sporocarp.

Nor is it Pyrenogaster, as the gleba has no peridioles.

Perhaps something new?

Darv, do you remember if this fungus was epigeous? It appears to have an enlarged sterile base, nearly a columella-like. The purpose of such a base has been suggested to be a vestigial stipe, pushing the sporocarp slightly above the ground.

Would like to see more material in different stages of maturity.

By: Steph Jarvis (Steph Jarvis)
2014-01-20 17:54:48 CST (-0600)

I do not think this is Mycenastrum. This puffball matures from the inside out. This gleba strucutre looks very spongy, and not like a young Mycenastrum. The yellow immature color is right, but the purple color of the mature area is off. This color should be in the yellow brownish gray tones and lean into dark brow, chocolate brown.
Mycenastrum has more of a rooted, tapered, pinched base. This will root it into the ground. But – rocks and things in the ground can mess with shape and growing patterns. WHAT DO THE SPORES LOOK LIKE? Mycenastrum has pitted spores and antler-like eucapillitium.

Agreed, but for a different reason.
By: Daniel B. Wheeler (Tuberale)
2011-12-13 18:06:08 CST (-0600)

Probably Mycenastrum corium, which I have not seen before. But likely.

Scleroderma in my experience never has reddish tones to the peridium, which this specimen has lots of. Scleroderma is not uniformly dark purple-black at an early age. But I have never seen the mauve-red toning in this specimen before in Scleroderma collections.

Created: 2011-12-11 00:51:10 CST (-0600)
Last modified: 2018-01-03 09:42:52 CST (-0600)
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