Amanita citrina var. grisea - Amanitaceae.org - Taxonomy and Morphology of Amanita and Limacella
[print] [map]
name Amanita citrina var. grisea
name status nomen acceptum
author (Hongo) Hongo
english name "Asian Citrine Bulbous Amanita"
images
intro The following information is derived from (Yang 1997).
cap

Fruiting bodies of A. citrina var. grisea are medium-sized.  The cap is 70 - 80 mm wide, convex to applanate, grey to dark grey with a brownish tinge, innately radially fibrillose, and covered with cream-colored to yellowish felty volval remnants; the cap's margin is smooth and non-appendiculate; and the flesh is white.

gills

The gills are free, crowded, and white, occasionally with a pinkish tinge; the short gills are attenuate.

stem

The stipe is 80 × 9 - 14 mm, subcylindric or attenuate upwards, with a surface that is white; the stipe's basal bulb is 25 mm wide and abrupt to subabrupt.  The annulus is membranous, with an upper surface that is yellow to yellowish and a lower surface that is grayish to whitish.

spores

The spores of A. citrina var. grisea measure 8.0 - 10.0 (-11.0) × 7.5 - 9.0 (-10.5) µm and are subglobose and amyloid.  Clamps are absent from bases of basidia.

discussion Amanita citrina var. grisea was originally described from Japan.  It was recently reported also from southwestern China.

The reader may wish to compare the present species to the following taxa: A. mappa, A. lavendula, and A. sinocitrina.—Zhu L. Yang
brief editors RET

[top]