"Larger-spored East Asian Amidella"
Technical
description not yet available.
BRIEF DESCRIPTION: The
fruiting bodies of A. clarisquamosa
are usually medium-sized to large. The cap is 40-100 mm wide,
convex to applanate, dirty white to yellowish brown to brownish, with
an appendiculate and shortly striate margin; it is covered with
brownish to grey-brown, patch-like volval remnants;
its context is white, unchanging or barely changing.
The
gills of this species are free to subfree, crowded, white to
cream-colored but become greyish, grey brown to chocolate brown when
dried; and the short gills are truncate and of diverse lengths.
The
stipe is 60 - 130 x 10 - 20 mm, subcylindrical to attenuate upwards;
its surface is white to dirty white and covered with grey-brown
furfuraceous to floccose squamules; the stipe base is not enlarged and
basal bulb is not present. The volval remnants form a sac at the base
of the stipe; the outer surface of the sac is white to dirty white,
and the inner surface is dirty white. The annulus is superior and
fugacious.
Spores
measure (9.5-)
10.0-13.5 (-14.0) ×
(5.5-) 6.0-7.0 µm and
are ellipsoid
to long ellipsoid, and
amyloid. Clamps are not present on the bases of basidia.
Amanita
clarisquamosa
was originally described from Japan. It also occurs in China. It grows
in mixed forests with broad-leaved trees and conifers.
Amanita clarisquamosa is very similar to A. avellaneosquamosa (S. Imai) S. Imai and A. volvata (Peck) Lloyd. However, A. clarisquamosa differs from A. avellaneosquamosa by its shorter striations on the pileal margin, more densely arranged lamellae and larger spores. The fruit-body of A. volvata becomes reddish brown when cut, and has much thicker subhymenium consisting of 3-4 layers of cells and somewhat smaller spores. Furthermore, the inner layer of the volval remnants consist of a large number of loosely arranged, fusiform, broadly clavate to ellipsoid inflated cells.
-- Zhu L. Yang
Photos: Zhu L. Yang (Yunnan, China).
Return to Section Amidella page.
Last change 26 September 2005.
This page is maintained by R.
E. Tulloss
Copyright 2005 by Dr. Zhu L. Yang..
Photographs copyright 2005 by Dr. Zhu L. Yang