Fruiting bodies of Amanita griseofarionosa are small to medium-sized.
The cap of this species is 40 - 70 mm wide, convex to applanate, greyish,
brownish grey, or occasionally whitish. The cap is densely covered with greyish, grey to dark grey,
farinose, verrucose to felty volval remnants; the margin
is smooth and appendiculate; and the context is white.
The gills are free and white; their edges are greyish. The short gills are attenuate.
The stipe is 60 - 120 × 5 - 20 mm
and subcylindric, and it has a surface that is greyish to
dirty white, covered with grey farinose to floccose to
fibrillose squamules. The stipe's basal bulb is 10 - 30
mm wide and ventricose; its upper part is covered with
grey to brown, floccose to farinose volval remnants. The
annulus is fugacious.
Bas (1969) reported that
the taste as mild and the smell, faint.
Spores measaure (8.0-) 8.5 - 11.0 (-12.5) × 7.0 - 9.0 (-11.0) μm and are subglobose to broadly ellipsoid to ellipsoid (rarely globose) and amyloid. Clamps are absent at the bases of basidia.
Amanita griseofarinosa was originally described from Japan. The species is also found in China and South Korea.
Due to delays in data processing at GenBank, some accession numbers may lead to dead pages.
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TNS [per Doi. 1991. Bull. Natl. Sci. Mus., Tokyo, Ser. B 17(2): 50]
Bas. 1969. Persoonia 5: 472, figs. 226-227.
Z. L. Yang. 1997. Biblioth. Mycol. 170: 160, figs. 132-134.
Z. L. Yang and Y. Doi. 1999. Bull. Natl. Sci. Mus. Tokyo B 25(3): 117-118, fig. 14.
Imazeki and Hongo. 1987. Color. Illus. Mushr. Japan 1: 131, pl. 32 (fig. 225).
Imazeki and Hongo. 1969. Color. Illus. Mushr. Japan 2: 43, pl. 13 (fig. 79).
Oosaku. 2000. Boll. Gruppo Micol. G. Bresadola 43(2): 60.
Olive text indicates a specimen that has not been
thoroughly examined (for example, for microscopic details) and marks other places in the text
where data is missing or uncertain.
NOTE: Spore measurements from papers by Z. L. Yang use his "Times New Roman" face for "Q"
and "Q'"—respectively, "Q" and
Most presentations of spore data since the description of the present species have been based on at most two collections (see, below). The best set of data is presented last in this data field—the data from (Yang 2005). The sporograph corresponding to this data is overlaid on all others in the graphical presentation above.—ZLY, RET
from type study of Yang and Doi (1999): [71/3/1] (8.0-) 9.0 - 11.0 (-12.0) × (6.0-) 6.5 - 8.5 (-10.0) μm, (Q = (1.10-) 1.18 - 1.47 (-1.54); Q = 1.29 ± 0.09).
from Bas (1969): [20/2/1] 8.5 - 10.0 × 7.0 - 9.0 μm, (Q = 1.05 - 1.35; Q' = 1.20).
Each spore data set is intended to comprise a set of measurements from a single specimen made by a single observer;
and explanations prepared for this site talk about specimen-observer pairs associated with each data set.
Combining more data into a single data set is non-optimal because it obscures observer differences
(which may be valuable for instructional purposes, for example) and may obscure instances in which
a single collection inadvertently contains a mixture of taxa.