Technical description (t.b.d.)

BRIEF DESCRIPTION: The cap of Amanita griseofolia is 30 - 70 mm wide, campanulate to hemispherical, becoming convex to plano-convex, non-appendiculate, without an umbo or slightly umbonate, and with a tuberculate-striate margin. The cap is brownish gray to gray-brown, darker over disc, becoming somewhat paler towards the margin, lacking any yellow or ochreous tint at all stages of development. The flesh is thin, 2-5 mm thick, white to whitish, and unchanging. The volva is grey to dark grey, verrucose to felty or farinose, sometimes irregularly formed, and easily washed away by rain.

The gills are free, crowded, whitish, becoming grayish to gray, often becoming somewhat darker when dried, with gray to dark gray edges. The short gills are truncate to subtruncate, plentiful, and evenly distributed.

The stem is (60) 80 - 170 x 5 - 15 mm, subcylindric or slightly tapering upward, with the apex slightly expanded, white to dirty white, fistulose, with the lower half covered with gray to grayish fibrillose squamules, and the upper half densely covered with gray fpowdery squamules. The flesh is white to dirty white. The volva is felty to granular or verrucose, gray to dark gray, arranged irregularly or sometimes in incomplete belts or rings at the stipe base.

The spores measure (9.5-) 10.0 - 13.5 (-16.5) x (8.5-) 9.5 - 13.0 (-15.0) µm and are globose to subglobose and inamyloid.

The species occurs in broad-leaved, coniferous, and mixed forests with Oak, and Pine.

The range of A. griseofolia extends from northeastern to southern China and from eastern to southwestern China. It may be common in East Asia; and, in the past, was regarded as Amanita ceciliae (Berk. & Broome) Bas. -- Zhu L. Yang

Note: Because of its similarity to A. ceciliae ("Cecilia's Ringless Amanita"), an English common name is proposed that is similar to the name of another species resembling the European species -- e.g., A. sororcula Tulloss, Ovrebo & Halling, the "Little Sister Ringless Amanita." -- RET

Photos: Dr. Zhu L. Yang (China)

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Last changed 15 August 2004.
This page is maintained by R. E. Tulloss.
Copyright 2004 by Zhu L. Yang.
Photograph copyright 2004 by Zhu L. Yang.