Collection location: Tualatin Hills Nature Park, Beaverton, Washington Co., Oregon, USA [Click for map]
Who: Sava Krstic (sava)
Found in Tualatin Hills Nature Park, under oaks, growing on a decorticated small branch.
Odor strongly alcaline.
Spores 7-8 × 3.5-4 microns. Basidia 2- and 4-spored.
The pileus has a separable pellicle. It’s visible in the first photo, and obvious in the photo of the specimen maimed after several preparation I made from it. The pellicle is a crucial diagnostic character, which puts this mushroom directly into subgenus Glutinipes in A.H.Smith’s monograph (1947). The subsequent key puts the mushroom (because of lignicolous habitat) into section Caespitosae, where it does not match anything closely (cheilocystidia differ etc).
Maas Geesteranus’s key to sections of Mycena leads to a dead end after we pass the tests: (1) lamelar edge NOT separable as an elastic-tough thread; (2) spores pip-shaped; (3) stipe not exuding milk; (4) pileus covered by separable pellicle; (5) cheilocystidia sessile or short-stalked; (6) lamellar edges concolorous with the sides.
Thus, I cannot give this Mycena even a section name.
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sum(score * weight) /
(total weight + 1)
Created: 2011-11-27 14:09:01 PST (-0800)
Last modified: 2013-03-05 23:55:50 PST (-0800)
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