Amanita submembranacea: The Ultimate Mushroom Guide
About The Amanita submembranacea Mushroom
Amanita submembranacea is a species of fungi belonging to the family Amanitaceae. It is native to Europe and Northern America. This smallish and generally fairly dark grisette occurs in association with fir, birch, larch, and spruce.
Other names: Olive Amanita.
Amanita submembranacea Identification
In young specimens the cap margin is noticeably paler than the rest of the cap, but this feature is not always retained as the caps expand fully. Olivaceous brown; the margin marked with strong radial lines; sometimes with irregular grey veil fragments mainly in centre; convex, eventually flattening; 6 to 10cm across.
The gills are free, not very crowded, and off-white tending to gray or brown with age; the short gills are truncate to sub truncate, plentiful, and unevenly distributed.
Its stem is exannulate and has a sheathing, submembranous volva at its base. This volva rapidly becomes gray after it has been split to expose the pileus, and it often has the appearance of canvas with flakes of old paint on it.
The spores measure (8.3-) 9.5 - 13.0 (-14.5) x (7.3-) 9.0 - 12,0 (-13.0) µm and are globose to subglobose (infrequently broadly ellipsoid) and inamyloid.
Clamps are absent from bases of basidia.
Amanita submembranacea Look-Alikes
Similar but has a smooth stem without a snakeskin pattern.
Has an olivaceous fawn cap with a pale margin; its volva is substantial rather than thin and leathery.
Amanita submembranacea Taxonomy & Etymology
In 1975 the well-known French mycologist Marcel Bon (born 1925) described this species, naming it Amanitopsis submembranacea; and four years later Frieder Gröger, a German mycologist, defined it as Amanita submembranacea, the current name by which this species is listed in the British Mycological Society checklist of fungi. Some people refer to this mushroom as the Peeling Paint Ringless Amanita.
The specific epithet submembranacea is simply a reference to the very thin (submembranous) and brittle or leathery bag-like volva at the base of the stem.
Amanita submembranacea profile
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