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Amanita ceciliae [ Basidiomycetes > Agaricales > Amanitaceae > Amanita . . . ] by Michael Kuo This ring-less species of Amanita features a lined, brown cap that is usually covered with one or more grayish patches. Unlike many of the other ringless amanitas (Amanita vaginata, for example), Amanita ceciliae has a flimsy volva that usually breaks apart, leaving grayish flakes and patches of tissue on the stem base--as opposed to a persistent volva that leaves a sack around the stem base. Amanita ceciliae is reported primarily from areas east of the Mississippi River but similar mushrooms also occur in the Pacific Northwest, the Southwest, and Texas. Amanita experts David Jenkins (1986) and Rodham Tulloss (2004) suggest that North American amanitas matching the general description of Amanita ceciliae (a European species) may be undescribed, separate species. No species of Amanita should be considered for the table. Description: Ecology: Mycorrhizal with hardwoods and conifers; growing alone, scattered, or gregariously; summer and fall; primarily eastern in distribution but reported in the Pacific Northwest, the Southwest, and Texas (with an apparent association with pecan trees). My collections have been in northern Michigan, under eastern hemlock and quaking aspen. Cap: 5-12 cm; convex, expanding to planoconvex or flat; brown; usually darker in the center; with grayish patches; the margin strongly lined at maturity. Gills: Free from the stem or slightly attached to it; crowded; whitish; with frequent short-gills. Stem: 7-18 cm long; up to 2 cm thick; tapering slightly to apex; whitish; finely hairy or fairly smooth; without a ring; without a swollen base; with a whitish to grayish volva that falls apart, leaving flakes, patches, or a grayish zone of tissue on the stem base. Flesh: White; unchanging when sliced. Odor: Not distinctive. Spore Print: White. Chemical Reactions: KOH on cap surface negative. Microscopic Features: Spores 9-12 µ; nearly round; smooth; inamyloid. Amanita inaurata and Amanita strangulata are synonyms. REFERENCES: (Berkeley & Broome, 1854) Bas, 1983. (Saccardo, 1887; Smith, Smith & Weber, 1979; Weber & Smith, 1985; Jenkins, 1986; States, 1990; Phillips, 1991/2005; Lincoff, 1992; Metzler & Metzler, 1992; Barron, 1999; Roody, 2003; Tulloss, 2004; McNeil, 2006; Miller & Miller, 2006.) Herb. Kuo 09110512. Further Online Information: Amanita ceciliae at Tulloss's Studies in Amanita |
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Cite this page as: Kuo, M. (2006, March). Amanita ceciliae. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/amanita_ceciliae.html |