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Lepiota magnispora [ Basidiomycetes > Agaricales > Agaricaceae > Lepiota . . . ]
by Michael Kuo Lepiota magnispora is often featured in field guides as "Lepiota clypeolaria," but recent studies by Vellinga (2000, 2001, 2003) have discovered several genetically distinct mushrooms in this group; compared to the true Lepiota clypeolaria, Lepiota magnispora has brighter, yellower colors and a more contrasting "eye" in the center of the cap, as well as longer, more spindle-shaped spores. Description: Ecology: Saprobic; growing scattered, gregariously, or in clusters in forest litter; found under hardwoods (including Coast Live Oak on the West Coast and oaks in the Midwest) and under conifers; summer and fall (over winter in coastal California); widely distributed in North America. Cap: 3-5 cm; convex to bell-shaped, becoming broadly convex, broadly bell-shaped, or nearly flat in age; dry; scaly; yellow to yellow-brown or rusty brown with a darker, contrasting center. Gills: Free from the stem; white; close. Stem: 4-9 cm long; under 1 cm thick; more or less equal, with a slightly swollen base; hairy to shaggy; whitish to yellowish, or with scattered brownish scales; sometimes discoloring yellowish with age or on handling; with a sheathing ring or ring zone that sometimes disappears. Flesh: White. Odor and Taste: Not distinctive. Chemical Reactions: KOH on cap surface negative. Spore Print: White. Microscopic Features: Spores 15-21 x 4.5-6 µ; smooth; strongly to weakly dextrinoid; fusiform, with a convex curve on the adaxial side but not on the other side; reminiscent of bolete spores. Cystidia absent. Clamp connections present. REFERENCES: Murrill, 1912. (H. V. Smith, 1966; Vellinga, 2000, Vellinga, 2001; Vellinga, 2003.) Herb. Kuo 08190502, 01150604. Further Online Information: Lepiota magnispora at MykoWeb |
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Cite this page as: Kuo, M. (2007, October). Lepiota magnispora. Retrieved from the MushroomExpert.Com Web site: http://www.mushroomexpert.com/lepiota_magnispora.html |