Observation 133874: Psathyrella piluliformis (Bull.) P.D. Orton
When: 2011-12-11
No herbarium specimen

Notes: Pileus 13-45 mm diamter, paraboloid when young, becoming convex in age. Surface smooth, hygrophanous. Color dark brown, becoming yellow-orange in age. Context gray-white, non-staining. Margin of the pileus remaining dark brown later than disk. Stipe 10-35 mm long, 3-6 mm wide, fistulose, very brittle. Color white, staining brown when cut or damaged. Membranous veil present on young specimens covering the gills, only as membranous tissue on the pileus margin or stipe in older specimens. Lamellae gills. Attachment adnexed to adnate. Spacing close to crowded. Color dark brown. 2 to 3 series of lamellulae. White fluffy tomentose mat of mycelium at base of clusters of basidiocarps. Taste and odor mild to none.
Basidiospores 4-7 µm x 3-4 µm (average 5.5 µm x 3 µm, n=20 spores), elliptical, smooth, dark brown, inamyloid. Cheilocystidia abundant, 25-50 mm length, oblong to utriform. Pileipellis an epithelium. Stipitipellis a cutis. Clamps present.
Specimen collected 12/11/2011
Collector: Miko R. Nadel
Collection number: 005
Locality: California, Marin County. Mount Tamalpais State Park. West side of Ridgecrest Boulevard, ca. 0.2 mile south of junction with Bolinas-Fairfax Road.
Elevation: 1420 feet.
In clusters on decomposing hardwood.

Proposed Names

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Eye3 Eyes3
Based on microscopic features

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2013-05-17 14:32:03 PDT (-0700)
Last modified: 2013-05-17 22:07:24 PDT (-0700)
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