Observation 275047: Mycena alnicola A.H. Sm.

Notes:
[PNW Key Council Foray at Lake Cowichan]

Growing on a mossy log, not thick and with bark. It could be Alnus, but there were a lot of conifers around too. Collected on a rainy day, no photo in situ taken, no odor recorded. “Dense bloom giving the cap a pale-bluish sheen” — a character Smith used in the description of the type, and later used to distinguish the species from similar lignicolous Fragilipedes (M. abramsii, M. alclaliniformis) — was not observed, perhaps because of the rain and handling. Other than this, everything seems to match, in particular relatively short spores, gills adnate without decurrent tooth, and the variety of cheilocystidia shapes as depicted in Maas Geesteranus’s study. The type collection of M. alicola is from just a little South, in the Olympic Nat’l Park.

Basidia 4-spored 25-30 + 4.5 × 8. Spores 7.5-8.5 × 4.5-5; Q in the range 1.6-1.8. Cheilocystidia typically 40-50 × 11-15, most of them with a longish neck in the two caps examined.

Species Lists

Images

Basidia.
Cheilocystidia.
Cheilocystidia.
Cheilocystidia.
Cheilocystidia.
Hyphae of the cortical layer of the stipe.
Hyphae of the cortical layer of the stipe.
Pileipellis in MLZ.

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Created: 2017-04-28 01:31:00 CDT (-0400)
Last modified: 2017-04-28 01:31:09 CDT (-0400)
Viewed: 63 times, last viewed: 2019-08-12 10:50:52 CDT (-0400)
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