STUDIES ON THE AGARICACEAE OF HOKKAIDO. I

STUDIES ON THE AGARICACEAE OF HOKKAIDO. I. 23
white, obscurely flocculose on the edge; stipe 7-15 cm. long, 7-16 mm.
thick, attenuated upward, bulbous at the base, white or grayish,
pruinose and powdery-scaly above the annulus, nearly fibrous below,
solid or stuffed; annulus membranous, superior, white or grayish,
striate above; volva powdery, remaining loose powdery-floccose, gray
mass, evanescent; spores white in mass, hyaline, broadly ellipsoidal
or subglobose, 8-10 X 7-9 p, usually with a large central gutta.
Hab. on the ground in woods. Summer to autumn. Ishikari
(Sa pporo, N opporo ), Iburi (Lake side of Shikotsu).
Distr. Japan (Hokkaido, Honshu), Asia Minor, Europe, North
America and Australia.
Jap. name. Hebi-kinoko (SHIRAI ex P. HENNINGS).
18. Amanita spissacea lMAI
Bot. Mag. (Tokyo), XLVII, 427, 1933.
Solitary, of doubtful edibility. Pileus 6-10 cm. broad, convex,
then expanded; surface drab to fuscous, darker at the center, concentrically
arranged with fuscous or hair-brown colored polygonal
or pyramidal small powdery or powdery-floccose warts or patches;
context white, rather thick, comp·act, taste and odour none; lamellae
remote, white, subcrowded, ventricose, attenuated both ends; stipe
10-15 cm. long, 1-2 cm. thick, attenuated upward, obovately bulbous
at the base, grayish and flocculose-scaly or powdery-scaly above the
annulus, hair-brown colored powdery scaly below the annulus but it
appears to be concolorously fibrous just above the bulb, solid; annulus
membranous, superior, whitish and striate above, grayishwhite
and floccose below, margin hair-brown; volva powdery, hairbrown,
forming 1-3 concentric encircling rings on the bulb of the
stipe, evanescent; spores white in mass, hyaline, globose, 7-8 fl,
apiculate.
Hab. on the ground in woods. Autumn. Ishikari (Nopporo).
Distr. Endemic.
Jap. name. Hebikinoko-modoki (IMAI).