[Vor. 3 
330 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
5. S. castaneum Burt, n. sp. 
Type: in Mo. Bot. Gard. Herb. 
Fructification resupinate, effused, coriaceous, dry, not sep- 
arable from the substratum, glabrous, cracking in drying 
into pieces about 10 X 5 mm., olive-brown when fertile, Van- 
dyke brown when in vegetative condition, the margin соп- 
colorous; in structure 3-layered, with (1) a layer next to 
substratum of opaque, concolorous hyphae 4и in diameter, 
which form (2) a layer of pillared or spongy structure, in 
some places with pillars up to 150 in diameter, about 1 mm. 
apart, and in other places with a spongy mass of obliquely 
ascending, interwoven hyphae similar to those of the pillars. 
This layer supports (3) the 
hymenial crust, sometimes 
(/ \ stratose, with hyphae loosely 
As interwoven on the under 
pose side, 3—44 in diameter, very 
dense at the outer surface, 
at + ft ` with the hyphal branches or 
MJ a paraphyses 2и in diameter, 
>J curved longitudinally along 
Fig. 4 the surfaee and densely in- 
terwoven; erect probasidia 
base of the spore-bearing organ which slightly colored, rich in pro- 
жен gest 3 = en ne toplasm, deeply staining, 
pyriform, 11-15 >x 9-10y, 
are borne laterally on the hyphae about 15и below the surface 
of the hymenium; spores hyaline, simple, even, curved, 12 X 
3-314, borne singly from each of the upper four cells of a 
straight, few-celled, even-walled, clavate, hyaline organ 30-40 
X би, which grows from the probasidium and protrudes above 
the surface of the hymenium. 
Fructification 8-15 em. long, wholly surrounding limbs 
215 em. in diameter, 1-114 mm. thick. 
On living bark in swamp, Montgomery, Alabama. May 
and August—fertile in May. 
