Parasola plicatilis (Curtis: Fr.) Redhead, Vilgalys & Hopple
pleated inky-cap
Psathyrellaceae

Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.

Introduction to the Macrofungi

Photograph

© Michael Beug     (Photo ID #15113)


Map

E-Flora BC Static Map

Distribution of Parasola plicatilis
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Species Information

Cap:
1-3cm across when expanded, 0.5-1.5cm high when young, oval or cylindric to conic when young, broadly convex or flat when old; buff to yellow brown, usually with darker (cinnamon brown or fulvous) center, when old becoming grayish except for center; "deeply grooved (pleated) nearly to center", margin sometimes recurved [upturned] when old
Flesh:
very thin, fragile
Gills:
free but attached to a collar around top of stem, well-spaced, narrow; "soon gray and eventually black, but tending to wither rather than liquefy"
Stem:
3-7.5cm x 0.1-0.3cm, thin, hollow, more or less equal, very fragile; white or buff; smooth
Veil:
none (Breitenbach)
Odor:
none (Miller)
Taste:
mild (Miller)
Microscopic spores:
spores 10-13 x 6.5-10 microns, broadly elliptic, smooth, (Arora), spores 9.6-13.3 x 5.9-8.4 x 8.5-10.3 microns, miter-shaped to lentiform [lens-shaped] in front view, elliptic in side view, smooth, dark red-brown, with eccentric germ pore; basidia 4-spored, 25-40 x 11-16 microns, clavate, without basal clamp; pleurocystidia 70-125 x 20-35 microns, cylindric to ventricose, cheilocystidia 35-60 x 16-25 microns, lageniform to clavate or vesicular; cap cuticle of vesicular cells 25-40 x 14-25 microns, some septa with clamps, (Breitenbach), spores 9.5-13 x 6-8 x 8.5-10.5 microns, lentil-shaped, (Trudell)
Spore deposit:
black (Lincoff(2))
EDIBILITY
edible (Lincoff(2))

Habitat and Range

SIMILAR SPECIES
Parasola leiocephala (P.D. Orton) Redhead, Vilgalys & Hopple, found at least in California (where it had often been referred to as Parasola plicatilis), can be reliably differentiated by its smaller spores 8.0-11.0 x 7.0-9.5 x 5.0-7.5 microns, (P. plicatilis is said to be slightly smaller, more grayish, and more restricted to grassy habitats, whereas P. leiocephala is more ecologically variable), (MykoWeb). P. plicatilis is like some other coprinoid species but lacks the cap patches and hairs that many of them have.
Habitat
single, scattered or in small groups in grass, in woods, along paths etc., (Arora), single to numerous in grass and lawns, May to September, (Lincoff(2)), spring, summer, fall

Synonyms

Synonyms and Alternate Names:
Coprinus plicatilis (Curtis) Fr.