[Vor. 7 
118 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
Fructifications somewhat membranaceous, soft, spongy, 
sometimes resupinate, usually becoming conchate-reflexed, often 
imbricated, villose, becoming glabrous, 
| somewhat concentrically suleate, drying 
0 snuff-brown to bister; hymenium even, 
O glabrous, white, drying cream-color to 
pallid mouse-gray; in structure 1000 y 
thick, composed of longitudinally and 
loosely interwoven hyphae 3 y in diam- 
eter, colored towards the upper surface, 
hyaline towards the hymenium; hyme- 
nium not zonate, containing flexuous 
gloeocystidia 20-60X5-—7 nu, rarely 90 y, 
long; spores hyaline, 3-43 X2-3 y. 
Reflexed pileus 1-4 cm. long, 2-5 cm. 
wide; resupinate specimens 3-10 X 1-3 em. 
On rotting frondose limbs usually, but 
sometimes on pine. Canada to Texas, 
westward to Oregon, in the West Indies, 
and also in Europe. April to December. 
Not rare. 
Reflexed specimens of S. fuscum may be recognized at sight 
by the soft, pliant pileus, brown and felt-like above, with a white 
hymenium. Gloeocystidia are so rare in the hymenium of a 
Stereum that their presence in abundance in this species affords 
a decisive specific character. Wholly resupinate specimens 
have the color of the hymenium of reflexed fructifications and 
have similar consistency and gloeocystidia. So many reflexed 
species occur resupinate that one should be sure to gather the 
more or less reflexed fructifications which can usually be secured 
associated with the resupinate specimens. Since both Persoon 
and Fries recognized the priority of Schrader's specific name fus- 
cum and substituted bicolor, presumably because highly distinc- 
tive and appropriate for the species, the restoration of the 
original name by recent mycologists seems just. 
Specimens examined: 
Exsiccati: Elis, N. Am. Fungi, 1207; Ell. & Ev., Fungi Col., 
1019; Rabenhorst, Fungi Eur., 3233; Ravenel, Fungi Am., 
9; Ravenel, Fungi Car. 2:33; de Thümen, Myc. Univ., 
1704. 
ig. 10. . fuscum. 
Gloeocystidia and spores 
x 665. 
