Observation 63611: Leucoagaricus Locq. ex Singer

When: 2011-02-17

Collection location: Peter Coutts Circle, Palo Alto, California, USA [Click for map]

Who: Len (placeport)

Specimen available

Dense, hard button-type mushroom. Creamy white with tan tones in cap. Flesh creamy white, very dense, solid. Stem snaps off like chalk. Not fibrous. Gills pure white, closely spaced, with minor gills interspersed. Could not induce spore prints. Odor and taste not very distinctive. Odor with notes of apricot.



Proposed Names

27% (6)
Recognized by sight: Growing in landscaping under mixed shrubs and conifers, including oleander and redwood.
-22% (6)
Based on microscopic features: stem snaps like chalk due to the presence of sphaerocysts.
20% (6)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Len (placeport)
2011-02-20 01:58:02 UTC (+0000)

This was a mystery mushroom to me because the flesh was very firm and compact, very resistant to decay (I had them in a cooler for days without much change in appearance, odor, etc.), and the gills were narrow and firmly attached to the cap. The gills were free from the stipe, with an open ring between the gill attachments and the edge of the stipe, like many Amanitas. However, unlike Amanitas I have collected, which have all had rather soft flesh, fragile and moderately broad gills, which are not firmly attached, and which tend to decay quickly, even when refrigerated. The stipe of these specimens did snap off cleanly, like a Russula, and was not notably fibrous inside. However, my review of all Russula candidates failed to yield any reasonable matches. This mushroom did not discolor on handling (at all), which rules out nearly all Russula species that resemble it. The only Amanita that seems to be a reasonable candidate from this area is A. ocreata.

Free gills
By: Irene Andersson (irenea)
2011-02-19 08:36:54 UTC (+0000)

like in Leucoagaricus, Agaricus, Amanita etc..

Created: 2011-02-18 20:30:40 UTC (+0000)
Last modified: 2011-02-21 22:03:47 UTC (+0000)
Viewed: 171 times, last viewed: 2018-12-04 02:49:28 UTC (+0000)
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