Notes: Growing on needles and leaves, with white mycelial mass at stipe bottom. Odor and taste not recorded.
Spores smooth, ellipsoid, hard to find, 7-9 × 4-5. Basidia 2- and 4-spored, ~30 × 5; clamps seen in some. Cheilocystidia absent or indistinguishable from basidia. (Made multiple mounts looking for them.) Caulocystidia abundant. Pileipellis a cutis, no visible pellicle (multiple attempts).
No reaction of spores or tissues in MLZ.
This should not be a Mycena since omphalinoid members of the genus do not have smooth hyphae on the cap surface. M. pallida is a valid name in Species Fungorum, but it is synonymized to Pseudoomphalina pachyphylla in MycoBank. Murril’s Omphalopsis pallida was transferred to Mycena by Smith, but Redhead noted that “nonreactive spores and tissues in Melzer’s reagent and the abundant incrusting pigments in the tramal area exclude the taxon from Mycena” and synimyzed it with Clitocybe incomis, which later became Pseudoomphalina pachyphylla. Redhead may have had some doubts: “At present I consider O. pallida to be a synonym of Clitocybe incomis, a variable species…”
Now, P. pachyphylla that I’m seeing in pictures looks much different from my collection. It’s bigger, does not have really decurrent gills and its gills are closer. The match with Murrill’s and Smith’s descriptions is better. Both species have pileocystidia which I was not able to see, though it’s visible in the close-up photos that that the pileal surface is minutely hairy.
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Created: 2013-12-17 04:36:57 EST (-0500)
Last modified: 2013-12-17 04:37:02 EST (-0500)
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