[Vor. 7 
128 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
Stereum Micheneri Berk. & Curtis emend. Massee, Linn. Soc. 
Bot. Jour. 27: 183. 1890.—S. Micheneri Berk. & Curtis, Gre- 
villea 1: 162. 1873 (in part). See Ann. Mo. Bot. Gard. 1: 
214. 1914.—Corticium Nyssae Berk. & Curtis, Grevillea 1: 166. 
1873; Sacc. Syll. Fung. 6: 609. 1888; Massee, Linn. Soc. Bot. 
Jour. 27: 120. 1890.—C. siparium Berk. & Curtis, Grevillea 
1: 177. 1873; Sace. Syll. Fung. 6: 636. 1888; Massee, Linn. 
Soc. Bot. Jour. 27: 139. 1890. 
Illustrations: Berkeley, Ann. & Mag. Nat. Hist. I. 1: 94. 
)l..8. f. 40. 
Type: in Kew Herb. and Curtis Herb. 
Fructifications coriaceous-soft, rarely resupinate, usually more 
or less broadly reflexed, upper surface tomentose, spongy, some- 
times with projecting hairs 
m lh 
TM ul l 
IN A cinnamon-buff, the margin 
collapsed together into a 
QQ SN 
S plane or wrinkled surface, 
| \ Ss drying cartridge-buff to 
NANA 
M SN) 
SSI 
n 
entire; hymenium even, 
drying vinaceous-buff to 
fawn color; in structure up 
to 1-13 mm. thick inclusive 
i ; r of the tomentum, with the 
Fig. 14. S.rugosiusculum. Section of hy-  . : : 
menial region X 90; cystidium and basidia, intermediate layer on its 
n, vesicular body, v, and spores, s, X 665. under side in the sub- 
hymenial region, loosely 
interwoven, and containing more or less numerous, pyriform 
vesicular bodies 15-30 X 10-20 ,; cystidia slender, thin-walled, 
tapering hairs, not incrusted, 4-5 » in diameter, protruding up 
to 25 » beyond the basidia; spores white in spore collection, 
even, flattened on one side, 41-6 X 2-3 y. 
Resupinate specimens up to 6 cm. in diameter; reflexed por- 
tion 1-2 em. broad, 2-6 cm. laterally along substratum. 
On logs and stumps of Salir and other frondose species. 
Ontario to Alabama, in Missouri, and in British Columbia to 
Mexico; occurs also in Sweden, France, Italy, England, and 
Japan. August to April. 
Stereum rugosiusculum is probably more frequent and more 
widely distributed than shown by the specimens received, for 
mW 
