Major Groups > Cup Fungi > Helvella queletii

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Helvella queletii

[ Ascomycetes > Pezizales > Helvellaceae > Helvella . . . ]

by Michael Kuo

Helvella queletii has a grayish brown to brown, cuplike cap that sits atop a whitish, ribbed stem. The ribs do not extend more than a few milimeters onto the undersurface of the cup, which helps to separate it from Helvella costifera and Helvella acetabulum, which have ribs that extend far onto the undersurface of the cap. Helvella queletii grows under hardwoods or conifers, and is fairly widely distributed in North America.

Description:

Ecology: Probably mycorrhizal; growing alone or gregariously under hardwoods or conifers; spring and summer in eastern North America and in the Rocky Mountains--but appearing in fall, winter and spring on the West Coast; widely distributed.

Cap: 1.5-6 cm; when young often folded inward along a central axis; cup-like or saucer-like at maturity (sometimes irregular); upper surface grayish brown to brown, smooth or slightly wrinkled, bald; undersurface pale grayish brown to whitish (sometimes darker near the margin), densely but finely fuzzy.

Flesh: Thin; brittle.

Stem: To 11 cm long and 4 cm thick; flaring to apex and/or base; usually deeply ribbed with round-edged ribs that terminate at the apex of the stem and do not continue far onto the under surface of the cap; whitish or very pale brown.

Chemical Reactions: KOH negative on all surfaces.

Microscopic Features: Spores 17-22 x 11-14 µ; elliptical; smooth; with one central oil droplet. Paraphyses filiform with rounded apices that become clavate with maturity; 7-8 µ wide at apex. Excipular surface elements hyaline to brown; often arranged in bundles; frequently septate; terminal cells clavate.

REFERENCES: Bresàdola, 1882. (Saccardo, 1889; Smith Weber, 1972; Smith, Smith & Weber, 1981; Breitenbach & Kränzlin, 1984; Arora, 1986; Abbott & Currah, 1997; Barron, 1999.) Herb. Kuo 05099505, 06030401, 05070702, 08120708, 04211203.

Helvella solitaria is a synonym, and may be the more appropriate name for the species, since solitaria predates queletii.

Further Online Information:

Helvella queletii at MykoWeb

 

Helvella queletii

Helvella queletii

Helvella queletii

Helvella queletii
Spores



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Cite this page as:

Kuo, M. (2012, October). Helvella queletii species cluster. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/helvella_queletii.html