STUDIES ON THE AGARICACEAE OF HOKKAIDO. I

18 SANSHI IMAI
Agaricus (Amanita) pantherinU8 FR. Syst. Myc. I, 16, 1821; Epicr. Myc.
5, 1838; Hymen. Eur. 21, 1874-WINT. Die Pilze, I, 847, 1884.
Amanita umbrina SCHROET. Pilze Schles. I, 679, 1889.
[Po HENN. Hedw. XXXIX, (156), 1900-MATSUM. Ind. PI. Jap. I, 131,
1904]
Solitary, poisonous. Pileus 5-26 cm. broad, convex, then plane,
at length slightly depressed at the center; surface cinnamon-buff,
cinnamon-brown, snuff-brown or bister, paler at the margin, slightly
viscid when wet, besprinkled with three to many sided or pyramidal,
easily separable, whitish or yellowish warts, or with whitish patches
of the fragments of vol va, margin striate or rarely tuberculatestriate;
context white, taste and odour none; lamellae free, white,
tapering to both ends, moderately crowded, edge not entire; stipe
5.5-35 cm. long, 1-3 cm. thick, attenuated upward or nearly equal,
globosely bulbous at the base, white, then brownish, floccose or
fibrous-scaly, stuffed or hollow; annulus median or subsuperior,
membranous, white, then yellowish or brownish, persistent Of somewhat
fugacious; volva whitish or brownish, forming 1-3 concentric
encircling rings at the apex of bulbous base pf stipe; spores white in
mass, hyaline, ellipsoidal, 9-12 x 6.5-9 f-l •
Hab. on the' ground in woods. Summer to autumn. Ishikari
(Nopporo, Mt. Kurodake), Kushiro (Mt. Meakan).
Disir. Japan (Hokkaido, Honshu), Europe and North America.
Jap. name. Tengu-tuke (KAWAMURA), Huitorituke (KAWA­
MURA), Hy6-tuke (TANAKA).
12. Amanita sepiacea lMAI
Bot. Mag. (Tokyo) , XLVII, 426, 1933.
Solitary, edibility doubtful. Pileus 6-10 cm. broad, convex then
plane; surface snuff-brown to mummy-brown, darker at the center,
subviscid when wet, smooth, besprinkled with grayish or brownish,
polygonal or pyramidal warts, not striate on the margin; context
white, fleshy, rather thin, taste and odour none, not changing in color
when bruised; lamellae scarcely free or somewhat adnate, white,
tapering to both ends, crowded, edge not entire; stipe 15-18 cm. long,
1-1.5 cm. thick, attenuated upwards, obovately bulbous at the base,
up to 3 em. thick at the base, grayish to smoky gray or avellaneousbuff,
fibrous Of flocculose-squamulose, solid or stuffed; annulus mem-