Observation 218637: Pisolithus arhizus group
When: 2015-09-18
(36.387° -121.55° 536m)
No herbarium specimen

Notes: Habitat notes: Erumpting from dry, compacted soil next to paved driveway surface outside Hastings Reserve Bunkhouse.

Key characters used to ID: Rounded sporocarp with crumbling dark yellow-brown peridium revealing mass of cinnamon-brown spores inside. Pleasant mushroom odor. Microscopic characters: “Spores 7–12 μm including ornamentation, globose, spinose…” (Desjardin and Wood, 2015). “Cinnamon-brown in mass” (per Deshardin and Brown) witnessed on same slide as microscopic photo below, but not evident in the provided microscopic view below.


Pisolithus arhizus group spores [40× objective lens × 10× optical lens = 400× total magnification]

Proposed Names

39% (3)
Used references: Tom Bruns
83% (1)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Daniel B. Wheeler (Tuberale)
2015-10-12 23:05:34 CDT (-0500)

present in blow-up.

Hope you didn’t inhale strongly: could be bad for your health. Same as inhaling any puffball spores.

Created: 2015-10-12 15:18:35 CDT (-0500)
Last modified: 2015-10-18 09:47:32 CDT (-0500)
Viewed: 41 times, last viewed: 2016-11-27 05:51:56 CST (-0600)
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