Amanita zonata - Amanitaceae.org - Taxonomy and Morphology of Amanita and Limacella
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name Amanita zonata
name status nomen acceptum
author Yang-Yang Cui, Qing Cai & Zhu L. Yang
english name "Yunnan Zoned Cap Ringless Amanita"
intro This text is derived from the original description of Amanita zonata.  The fruiting bodies of Amanita zonata are medium-sized.
cap The cap is 50 – 80 mm wide, planar, gray-brown, brown to dark gray in the center, gradually changing towards the margin to gray to gray-brown, and often has an indistinctly dark-colored ring-like zone at the proximal end of the marginal striations. The cap’s margin is radially grooved covering 15% - 30% of the cap's radius.  There is not material hanging from the edge.  The flesh is white.
gills The gills are free, crowded, and white.  The short gills are truncate and plentiful.
stem The stem is 90 – 130 × 4 – 15 mm, nearly cylindrical or narrowing upwards, dirty white, brownish to gray-brown, and is covered with grayish to brownish squamules.  The stem lacks a basal bulb.  At the stem's base, the volva is saccate, 20 – 35 × 15 – 20 mm, membranous, and the outer surface is white and sometimes with brown tinge while the inner surface is white to dirty white.
odor/taste The odor and taste were not recorded for the present species.
spores The spores measure 9.0 – 10.5 × 8.5 – 10.0 µm and are globose to subglobose and inamyloid.  There are no clamps at the bases of basidia.
discussion Amanita zonata is described from Yunnan Province, China.  This species occurs in subtropical forests dominated by Fagaceae.

Amanita ovalispora, a species described from Indonesia, is similar to A. zonata in appearance and habitats, but the former can be distinguished from the latter by the grayer to darker gray cap lacking an obvious dark-colored ring-like zone at the proximal end of the marginal striations, and broadly ellipsoid to ellipsoid spores (Q = (1.08-) 1.11 - 1.37).—Yang-Yang Cui and Rachel Warner
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