|Major Groups > Gilled Mushrooms > Pale-Spored > Amanita > Amanita chlorinosma|
by Michael Kuo
Amanita chlorinosma is one of several white species of Amanita with powdery universal veil remnants and a strong, peculiar odor that is reminiscent of chlorine--although the name chlorinosma often gets applied in a broad, field-guide-ish sense to almost any species meeting this description. Strictly speaking, however, the name should probably be reserved for a small to medium-sized, oak-associated species of eastern North America with a slight basal bulb and a very thick, powdery veil.
Ecology: Mycorrhizal with oaks and perhaps with pines; usually growing alone, but sometimes growing scattered or gregariously; summer and fall; widely distributed in eastern North America below the Great Lakes from about the Mississippi River eastward.
Cap: 2.5-10 cm; convex, expanding to planoconvex or flat; dry; white; covered with thick, white to grayish, powdery universal veil material (usually as an indistinct powdery or mealy layer, but sometimes as well defined patches, or even aggregated into a few clearly defined warts); the margin not lined.
Gills: Free from the stem or slightly attached to it; close; white to ivory; with frequent short-gills.
Stem: 5-10 cm long; 0.5-1.5 cm thick; more or less equal above a slight basal bulb; sometimes with a short, rooting, underground portion; white; covered with veil material like that on the cap; usually lacking a ring; volva powdery and indistinct.
Flesh: White; not staining on exposure.
Odor: Strong and somewhat foul; reminiscent of chlorine and rotting meat.
Chemical Reactions: KOH on cap surface negative to slightly yellowish.
Spore Print: White.
Microscopic Features: Spores 7-11 x 5-7 µ; ellipsoid; smooth; amyloid. Basidia 4-spored; basally clamped. Pileipellis a cutis of elements 2-9 µ wide. Lamellar trama bilateral; subhymenium with inflated cells.
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Cite this page as:
Kuo, M. (2013, May). Amanita chlorinosma. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/amanita_chlorinosma.html