Observation 97322: Melanoleuca Pat.

When: 2012-06-14

Collection location: Southeast Portland, Multnomah Co., Oregon, USA [Click for map]

Who: Daniel B. Wheeler (Tuberale)

No specimen available

Cap: 2.2-2.5 inches wide (5-6cm), white to very light buff, some wrinkling (from dehydration?); stem 2 inches tall (5cm), white with some yellowing near cap, slightly wider at cap than base, dead grass or dried grass adherring to base of stipe; gills: close to crowded, white to a faint blueish tint where cap broken, flesh white or pale flesh-colored; spore print white (see halo of spores on grass).

My initial reaction was Melanoleuca, perhaps in the evanosa grouping, based on Arora in Mushrooms Demystified. The grass adherring to the base of the stipe is reminiscent of Marasmius oreades, but the cap is the wrong color. Also, to my nose Marasmius oreades is a richer, more complex aroma than this, which smells remarkably like Agaricus bisporus.


Note white spores covering grass nearby.
Gills pale white, slight pinkish tint.
Dead grass pieces adherring to base of stipe with white mycelium.
Cap bruising pinkish, gills with slight blue where broken.

Proposed Names

4% (2)
Recognized by sight: Cap, gills, stipe. White spore print (see grass). No volva, gill adnate or free. Odor similar to Agaricus bisporus.
29% (1)
Used references: Arora, Mushrooms Demystified
46% (2)
Recognized by sight
56% (1)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Created: 2012-06-15 00:41:45 BST (+0100)
Last modified: 2014-02-26 19:28:07 GMT (+0000)
Viewed: 37 times, last viewed: 2017-06-13 09:05:34 BST (+0100)
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