Amanita
verrucosivolva Zhu L. Yang
Technical description not yet available. BRIEF DESCRIPTION: The fruiting bodies of Amanita verrucosivolva are medium-sized to large. The cap is 70 - 140 mm wide, convex to applanate to concave, often distinctly umbonate, at first yellowish, becoming orange to yellow when mature, often yellowish towards margin, usually glabrous; the cap margin is tuberculate-striate (30% to 40% of radius), non-appendiculate; and the context is white. The gills are free, crowded, and white to cream, with edges yellowish; the short gills are truncate. The exannulate stem is 100 - 220 x 10 - 20 mm, subcylindric or slightly tapering upwards, with a lower half that is white to cream and covered with yellow to orange, snakeskin-like squamules, while the upper half is yellowish to orange. The context is white and fistulose; the stipe lacks a basal bulb; the volva on the stipe's base is saccate, 40 - 80 x 20 - 35 mm, 1 - 4 mm thick, with its outer surface white to dirty white and with brownish to ferruginous, conical to verrucose warts. The inner surface of the volva is white, and the volva's internal limb is yellow to yellowish. Odor of sauerkraut. Taste is mild. Basidiospores (9.0-) 10.0 - 12.5 (-14.0) x (8.5-) 9.0 - 12.0 (-14.0) µm, globose to subglobose, inamyloid. Clamps are absent from the bases of the basidia. This species was originally described from Yunnan Province, southwestern China. It has also been found in Hubei Province, central China. -- Zhu L. Yang Note: the reader may wish to compare this species with A. strobilaceovolvata Beeli and A. tomentosivolva Zhu L. Yang. Photo: Zhu L. Yang (Yunnan Province, China) Return to Section Vaginatae page. Last changed 5 August 2005. |
