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Amanita magniverrucata [ Basidiomycetes > Agaricales > Amanitaceae > Amanita . . . ] by Michael Kuo White Amanita species in Section Lepidella are notoriously difficult to separate, but Amanita magniverrucata is fairly easily recognized by its huge pyramid-shaped warts, its slightly rooting stem base, and its range (from northern California to Baja California). Amanita cokeri is similar, but its warts are much smaller, and its stem base features prominent, peeled-back scales. Its presence in California is debatable; if it actually occurs within the range of Amanita magniverrucata, it is extremely rare. No species of Amanita should be considered for the table. Description: Ecology: Mycorrhizal; originally recorded under Bishop pine, but since reported under other conifers and, according to Jenkins (1986) and Tulloss (2005), under coast live oak; winter; distributed from northern California to Baja California. Cap: 4-15 cm; convex, expanding to planoconvex; when young with an inrolled margin; covered over the center with very large, pyramid-shaped warts--and towards the margin with smaller warts; whitish, sometimes bruising and discoloring slightly brownish. Gills: Free from the stem; close; whitish; with frequent short-gills. Stem: 7-12 cm long; up to 3 cm thick; equal or tapering slightly to apex; whitish; sometimes bruising and discoloring brownish to reddish brown; smooth or finely hairy; with a large, white, delicate ring; with a swollen base that usually has a root-like extension; with a whitish volva that usually appears as concentric zones of soft scales at the top of the bulb and the lower part of the stem. Flesh: White; unchanging when sliced. Odor: Unpleasant and strong, or not distinctive. Spore Print: White. Microscopic Features: Spores 8-13 x 5-8.5 µ; elliptical; smooth; amyloid. REFERENCES: Thiers & Ammirati, 1982. (Thiers & Ammirati, 1982; Thiers, 1982; Arora, 1986; Jenkins, 1986; Phillips, 1991/2005; Wood & Stevens, 2004; Tulloss, 2005.) Further Online Information: Amanita magniverrucata at Tulloss's Studies in Amanita |
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Cite this page as: Kuo, M. (2006, March). Amanita magniverrucata. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/amanita_magniverrucata.html |