Amanita tenuifulva - Amanitaceae.org - Taxonomy and Morphology of Amanita and Limacella
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name Amanita tenuifulva
name status nomen acceptum
author Yang-Yang Cui, Qing Cai & Zhu L. Yang
intro This text is derived from the original description of Amanita tenuifulva.  The fruiting bodies of Amanita tenuifulva are medium-sized.
cap The cap is 50 – 80 mm wide, plano-convex to planar, raised over the stem (umbonate), dark brown in the center, gradually changing towards the margin to brown to brownish.  The cap’s margin is radially grooved for 50% of the radius.  There is no material hanging from the edge.  The flesh is white to cream.
gills The gills are free, crowded, and white to cream.  The short gills are truncate and plentiful.
stem The stem is 100 – 140 × 9 – 15 mm, nearly cylindrical or narrowing upwards, dirty white to brownish, covered with white to brown tomentum.  The stem lacks a basal bulb.  At the stem's base, the volva is saccate, 16 – 35 × 13 – 20 mm, membranous, and both the inner and outer surfaces are white with brown tinge.
truffle-like fruiting body double click in markup mode to edit.
odor/taste The odor and taste of the present species were not recorded.
spores The spores measure 10.0 – 12.0 × 10.0 – 11.5 µm and are globose to subglobose and inamyloid.  There are no clamps at the bases of basidia.
discussion Amanita tenuifulva is described from Yunnan Province, China.  This species occurs in broad-leaved forests with Fagaceae.

Amanita tenuifulva is similar to A. fulva Fr., but the latter differs from the former in its relatively robust fruiting body with a proportionally shorter stem, and the structure of the volval remnants on the stem’s base.  In China, A. tenuifulva is also comparable to A. orientifulva Zhu L. Yang et al.  However, A. orientifulva has a relatively robuster fruiting body, larger spores (Q = 1.0 - 1.12 (-1.23) and scarce inflated cells in the outer part of the volval remnants on the stem’s base.—Yang-Yang Cui and Rachel Warner
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