Observation 160607: Agaricus bitorquis (Quél.) Sacc.

When: 2014-03-02

Collection location: Cottonwood, Arizona, USA [Click for map]

Who: Terri Clements/Donna Fulton (pinonbistro)

No specimen available

Finally some bug free torqs! And much better taste than usually described. Now that we finally had some rain I hope to find many more in the next few days. The tops of the caps were over an inch down—I saw the crack in the dirt they caused as they pushed up against it—so they were quite dirty as shown in the first few photos. The faint brown color on the cap and stem was what remained of the dirt even after washing.

Proposed Names

90% (2)
Eye3 Eyes3
Recognized by sight: maturing underground in disturbed soil, no yellowing of cap/stem when bruised, sheathed partial veil,firm white flesh, pleasant mushroomy odor and taste
Based on chemical features: KOH negative

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Great find and great pictures!
By: Chris May (ccmaymd)
2014-05-19 18:30:25 CEST (+0200)

You guys are awesome. Hope you found many more. I love how clearly your pix show the double annulus that gives this species the epithet of “bitorquis.”

Created: 2014-03-02 23:12:29 CET (+0100)
Last modified: 2014-05-19 18:26:49 CEST (+0200)
Viewed: 290 times, last viewed: 2018-04-21 10:18:15 CEST (+0200)
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