Collection location: Tualatin Hills Nature Park, Beaverton, Washington Co., Oregon, USA [Click for map]
Growing in soil under conifers. Odor a bit raphanoid, didn’t taste it.
Spores from fresh specimen: 11-14 × 6-8; from spore print (different specimen) 9.5-12.5 × 5.5-6.5.
Basidia 2- and 4-spored, ~32+8 x 9. Cheilocystidia mucronate or with 0-4 fingers, some of which branch into two. Ch. size ~45 × 20, fingers 5-15 microns long. No obvious pleurocystidia. Hyphae of the pileipellis forming dense mass (gelatinized?). Hyphae of the cortical layer of the stipe diverticulate, clamps observed. Caulocystidia numerous, variously shaped.
The only Fragilipedes species with such large spores seems to be the little known Mycena griseoconica, but its cap is “bluish grey when young”, and I couldn’t find any info about its caulocystidia. Another non-lignicolous candidate is Mycena robusta, but its spores are smaller (9-11 × 5.5-8 per Maas G.) and cheilocystidia have longer necks.
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