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Hypholoma capnoides

[ Basidiomycota > Agaricales > Strophariaceae > Hypholoma . . . ]

by Michael Kuo

Hypholoma capnoides (sometimes called Naematoloma capnoides) fruits in clusters on conifer stumps and logs. It is typically a fall or winter mushroom, but can be encountered in the spring as well. Distinguishing features include the yellow-brown to cinnamon cap, the purplish brown spore print, and the lack of a ring on the stem. Two other common Hypholoma species are similar; Hypholoma fasciculare has yellowish green gills when young, and a bitter taste--and Hypholoma sublateritium has a brick-red cap.

Description:

Ecology: Saprobic; growing in clusters or gregariously on or near decaying conifer logs, especially on the wood of pines and Douglas-fir; often common in pine plantations after trimming operations; fall and winter, sometimes in spring; widely distributed in North America. The illustrated and described collections are from Michigan, Illinois, and Québec.

Cap: 2-6 cm; bell-shaped to convex, becoming broadly bell-shaped, broadly convex, or nearly flat; sometimes with an incurved margin when young; often with wispy partial veil remnants on the margin; bald; dry; yellowish brown to orangish brown or cinnamon brown, but somewhat variable in color; usually darker over the center and paler toward the margin; often splitting radially when mature.

Gills: Attached to the stem or beginning to pull away from it; close; whitish to yellowish at first, becoming gray and eventually smoky brown; short-gills frequent.

Stem: 2-8 cm long; 4-10 mm thick; tough; more or less equal, or tapering somewhat to base when growing in tight clusters; bald or finely silky; colored like the cap, or more pale.

Flesh: Whitish to yellowish; sometimes slowly yellowing when sliced.

Odor and Taste: Not distinctive.

Chemical Reactions: KOH red on cap surface.

Spore Print: Purple brown.

Microscopic Features: Spores 6-9 x 3-4.5 µ; ellipsoid; smooth; with a small pore; thick-walled; yellowish in KOH. Cheilocystidia hyaline; subclavate; thin-walled. Pleuro-chrysocystidia mostly fusoid-ventricose to submucronate; thin-walled; 35-50 x 10-13 µ. Pileipellis a cutis or an ixocutis.

REFERENCES: (Fries, 1818) Kummer, 1871. (Fries, 1821; Saccardo, 1887; Smith, 1949; Smith, 1951; Smith, 1975; Stamets, 1978; Smith, Smith & Weber, 1979; Weber & Smith, 1985; Arora, 1986; Phillips, 1991/2005; Lincoff, 1992; Barron, 1999; McNeil, 2006; Miller & Miller, 2006; Trudell & Ammirati, 2009.) Herb. Kuo 05289501, 05170202, 11290902.

Further Online Information:

Hypholoma capnoides at MykoWeb
Hypholoma capnoides at Roger's Mushrooms

 

Hypholoma capnoides

Hypholoma capnoides

Hypholoma capnoides

Hypholoma capnoides

Hypholoma capnoides

Hypholoma capnoides

Hypholoma capnoides
Spore print

Hypholoma capnoides
Spores

Hypholoma capnoides
Chrysocystidium



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Cite this page as:

Kuo, M. (2014, February). Hypholoma capnoides. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/hypholoma_capnoides.html