Summary:
{See also Otidea Table.} Features include an Otidea-like fruiting body [like a vertically elongated cup with an opening down the side], dark purplish red brown to dark brown color on the inside surface and medium red brown exterior, short stem, growth in duff under conifers, and microscopic characters. The description is derived from Abbott(1).
Wynnella silvicola is found at least in BC, AB, MB, PQ, YT, MT, and Romania, and is reported from eastern North America, Europe, and Asia, (Abbott). It is also found in WA and ID, (Larsen). A collection from OR was used by O''Donnell(2).
Upper surface:
0.5-2.3cm in diameter, 1-6cm high (up to 5cm x 8cm fresh), ear-shaped or rarely irregularly cup-shaped with one enlarged lobe, margin inrolled at first, expanding and rarely somewhat reflexed when old; dark purplish red brown to dark brown when fresh, blackish brown when dry; smooth or rarely slightly wavy-wrinkled when very old, (Abbott)
Underside:
medium red brown or pale red brown to white near base; bald, (Abbott)
Stem:
0.2-1cm x 0.2-0.9cm (up to 0.8cm x 2cm fresh), narrowing to base or nearly equal; "yellow brown to pale yellow or white at base"; "shallowly fluted or ribbed", sulcate [grooved] and solid or with central chamber, (Abbott)
Microscopic:
spores 17-24 x 11.5-17 microns, broadly elliptic, smooth, colorless, with one droplet; asci 200 x 15-19 microns; paraphyses clavate, 5-6 microns wide at apex, brown, contents finely granular, (Abbott), spores 22-25 microns long (Arora)
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