|California Fungi—Peziza repanda
(Photo: © Fred Stevens)
Ic. Pict. Fung. 49. 1806.
Apothecium 5.0-10.0 (12.0) cm broad, sessile, cup-shaped, often irregular in outline, eventually spreading; margin incurved, then upright, finally level to recurved, crenate to lacerate; hymenium concave, even to wrinkled or furrowed, glabrous, light brown to chestnut-brown, sometimes tinged reddish-brown; exterior surface white to ash-grey, finely tomentose to furfuraceous; context thin, brittle, colored like the surface; odor and taste mild.
Spores 16.0-18.0 x 9.0-11.0 µm, ellipsoid, smooth, thin-walled lacking oil droplets; spores white in deposit.
Scattered to clustered on well-rotted logs, sawdust, or near decaying wood chips; fruiting throughout the mushroom season; widely distributed and common.
As indicated by the species epithet,
typically expands broadly in age. This feature and a preference for fruiting on or near rotting wood are important but not infallible fieldmarks. Similar colored Pezizas are unfortunately common. Most require a microscope to identify with certainty. Several reported to occur in California are listed below.
with a spreading form and association with rotting wood, but differs in its smaller, greyish-brown ascocarps, and microscopically with septate paraphyses, and a strongly stratified context.
), has an ochre-brown hymenium, lighter-colored, slightly furfuraceous exterior, finely warted spores, and fruiting habit on soil and decaying wood.
is found on old masonry, rotting textiles, and sandy soils. It forms a tan to ochre-brown cup, sometimes with pinkish to vinaceous tints, has smooth spores, and septate paraphyses;
has a dark-brown hymenium with a dingy reddish-brown, pustulate, outer surface, remains cupulate at maturity, has roughened to sculptured spores with 1-2 oil droplets, and occurs on soil in woods;
is an ochre-brown species distinctive for its urn shape at maturity and preference for fruiting on straw enriched with horse and cow dung. Furrowed specimens of
should also be compared with
, a snowbank species which bears a resemblance, but differs in a relatively thick, blunt margin and usually short, stout stipe.
(1986). Mushrooms Demystified. Ten Speed Press: Berkeley, CA. 959 p.
(1981). British Ascomycetes. J. Cramer: Vaduz, Liechtenstein. 585 p.
Desjardin, D.E., Wood, M.G. & Stevens, F.A.
(2015). California Mushrooms: The Comprehensive Identification Guide. Timber Press: Portland, OR. 560 p.
(2006). Ascomiceti d'Italia. Centro Studi Micologici: Trento. 454 p.
(1978). The North American Cup-Fungi (Operculates). Lubrecht & Cramer: Moncticello, N.Y. 377 p.
Other Descriptions and Photos
(D & CP)
Fungi in Finland and in Sweden:
Arora (1986): p. 821 (D), p. 822 (P)
Jordan: p. 49 (D & CP)
Lincoff: p. 347 (D), pl 620 (CP)
Tylutki (1979): p. 53 (D & P)
(D=Description; I=Illustration; P=Photo; CP=Color Photo)
The Fungi of California
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