Amanita fuscoflava - Amanitaceae.org - Taxonomy and Morphology of Amanita and Limacella
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name Amanita fuscoflava
name status nomen acceptum
author Zhu L. Yang, Yang-Yang Cui & Qing Cai
english name "Black-Eyed Susan Slender Caesar"
intro This text is derived from the original description of Amanita fuscoflava.  The fruiting bodies of Amanita fuscoflava are medium-sized to large.
cap The cap is 70 – 120 mm wide, plano-convex to planar, raised over the stem (umbonate), dark brown in the center, gradually changing towards the margin to yellow to honey yellow.  The cap’s margin is radially grooved for about 50-70% of the cap's radius and does not have material hanging from the edge.  The flesh is white to cream.
gills The gills are free, crowded, and yellowish with cream to yellowish edges.  The short gills are truncate and plentiful.
stem The stem is 80 – 150 × 10 – 15 mm, nearly cylindric or narrowing upwards; its surface is yellow and covered with yellow to yellowish fibers in a snakeskin pattern.  The stem lacks a basal bulb.  The volva is saccate, 20 – 40 × 20 – 30 mm, and membranous and has white inner and outer surfaces.  The ring is yellow.
odor/taste The odor and taste were not recorded for the present species.
spores The spores measure 8.5 – 10.5 × 6.0 – 7.0 µm and are ellipsoid and inamyloid.  Clamps are common at bases of basidia.
discussion Amanita fuscoflava corresponds to Amanita sp. 5 in Yang (2015).  So far as we know, it's cap coloration is distinct in southern China.  It occurs in tropical to subtropical forests dominated by the Beech family (Fagaceae), and currently known to occur only in southern China.—Yang-Yang Cui and Rachel Warner
brief editors RET

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