|Major Groups > Mycotrophs > Collybia cookei|
|Major Groups > Gilled Mushrooms > Pale-Spored > Collybioid > Collybia cookei|
by Michael Kuo
One of three species still remaining in the once-vast genus Collybia, Collybia cookei grows from the ground or from the blackened remains of other, larger mushrooms. Its stems are attached to "sclerotia"--little knots of tissue buried in the substrate. You'll need to pry around and uncover the sclerotia if you want to identify Collybia cookei, since it has roundish, yellowish sclerotia; the similar Collybia tuberosa has ellipsoid, reddish brown sclerotia--while Collybia cirrhata lacks sclerotia.
Ecology: Saprobic; growing gregariously on the remains of decayed mushrooms or on humus (occasionally on well rotted wood); found under hardwoods or conifers; summer and fall; fairly widely distributed in North America.
Cap: 2-9 mm; convex with a somewhat inrolled margin when young, becoming broadly convex to flat, with or without a shallow central depression; dry or moist; more or less bald; whitish to buff, sometimes with a darker central area.
Gills: Attached to the stem; close or almost distant; whitish.
Stem: 1-6 cm long; 1-2 mm thick; more or less equal; dry; whitish; becoming hollow; attached to sclerotia which are more or less round, yellowish to orangish yellow, and measure 4-10 mm.
Flesh: Whitish; thin.
Spore Print: White.
Microscopic Features: Spores 4.5-6 x 3-3.5 µ; smooth; ellipsoid or sublacrymoid; inamyloid. Pleuro- and cheilocystidia absent. Pileipellis a cutis or ixocutis of cylindric elements 3.5-7 µ wide; with scattered, rare pileocystidia.
Further Online Information:
Collybia cookei at Roy Halling's Collybia site
Cite this page as:
Kuo, M. (2013, February). Collybia cookei. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/collybia_cookei.html