Observation 23336: Scleroderma areolatum Ehrenb.

When: 2009-07-19

Collection location: Beaverton, Washington Co., Oregon, USA [Click for map]

Who: ANC

No specimen available

I found a string of these growing level with the gravel walkway. They have a tan outer skin and a rich brown foam-like interior. Is it a puffball of some sort? If you need additional bare-eye details to ID it, please let me know specifically would help.

[admin – Sat Aug 14 01:58:24 +0000 2010]: Changed location name from ‘Beaverton, Oregon Washington County’ to ‘Beaverton, Oregon, USA

Proposed Names

25% (1)
Recognized by sight
28% (1)
Recognized by sight
70% (2)
Eye3 Eyes3
Recognized by sight: Powdery spore mass and a peridium (outer shell) that is 1mm or more thick is a very stong indication of S. areolatum. Sclerodermas should be considered POISONOUS until proven otherwise.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Many Scleroderma species have stipes
By: Daniel B. Wheeler (Tuberale)
2009-07-20 17:50:28 PDT (-0700)

or a columella-like basal attachment. I’m not sure of the specific differences between a basal tuft (puffballs) and columella (a vestigial stem dispersing throughout the gleba, as in Thaxterogaster pinquis and Truncocolumella citrina). At least one species of Scleroderma remains mostly underground (Scleroderma hypogaeum). The debate continues as to whether these are becoming hypogeous truffle-like fungus, or epigeous mushroom-like fungus. Almost always in my experience S. areolatum is epigeous (above ground in part or whole).

Additional Features of the possible Scleroderma areolatum in my backyard
2009-07-20 15:37:53 PDT (-0700)

It did have a stem….

Created: 2009-07-19 19:24:24 PDT (-0700)
Last modified: 2010-10-24 22:40:45 PDT (-0700)
Viewed: 80 times, last viewed: 2017-06-05 22:49:47 PDT (-0700)
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