1916] 
BURT—THELEPHORACEAE OF NORTH AMERICA. VII 327 
menial crust not loosely interwoven on its under sides, pro- 
basidia terminal on the hyphae, and the large hook-shaped, 
presumably spore-bearing, organs of the upper surface. If 
these organs grow out from the probasidia, the probasidium 
must differentiate into the organ, for I have traced the 
eurved organ back to the colored hyphal cells. 
Specimens examined: 
Mexico: locality not stated, C. G. Pringle, comm. by W. G. 
Farlow, 5 (in Mo. Bot. Gard. Herb., 44590). 
4. S. pseudopedicellatum Burt, n. sp. 
Thelephora pedicellata of most American authors but not 
of Schweinitz. 
Type: in Mo. Bot. Gard. Herb. 
Fructification resupinate, effused, coriaceous, dry, not sep- 
arable from the substratum, varying from avellaneous and 
= 
ЖЖ 
Quin 
к | 
Fig. 3 
S. pseudopedicellatum. 
h, portion of hymenium showing the longitudinally inter- 
woven hyphal ends or paraphyses and some probasidia; b, 
three spore-bearing organs; s, spores. x 640. 
wood-brown to cinnamon-brown, the margin undulate, whit- 
ish; in structure three-layered, with (1) a layer next to the 
substratum of densely interwoven, thick-walled, slightly col- 
ored hyphae 3» in diameter, which form (2) a layer of 
erect, hyphal pillars, or pedicels, each about 500» long, 20- 
40 in diameter, about 3-5 to a millimeter, whose hyphae 
spread apart at the upper end of the pillars, branch, and 
form and support (3) the hymenial crust about 300, thick, 
with hyphae loosely interwoven near the pillars, 3-314 in 
