[VoL. 3 
328 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
diameter, very dense at the outer surface with the hyphal 
branches or paraphyses 2» in diameter, curved longitudinally 
along the surface and densely interwoven; erect probasidia 
nearly hyaline, rich in protoplasm, deeply iE о, pyriform, 
12-20 X 8-155, are borne laterally on the hyphae about 15» 
below the surface of the hymenium; spores white in a spore 
collection, simple, even, curved, 17-22 X 4-би, are borne 
singly from each of the upper three cells (so far as observed) 
of a straight or flexuous, few-celled, hyaline organ up to 
60 X 5-5%а, which grows from the probasidium and pro- 
trudes above the surface of the hymenium. 
Fructifications 2-15 em. long, 1-8 em. broad, 1-115 mm. 
thick. 
On small, living branches of apple, orange, oak, Nyssa, 
Cornus, acu ere and also on orange leaves in one col- 
lection; sometimes, perhaps always, associated with scale 
inel. Canada to Florida and Louisiana and westward to 
Wisconsin; also in Cuba and Porto Rico. December to Au- 
gust; spores produced in the last of May. 
S. pseudopedicellatum is the common Septobasidium of 
southeastern United States. It may be recognized by its 
brown, glabrous, shining, foliaceous crust which is raised 
and supported about a millimeter above the substratum on 
perpendicular, hyphal pillars which are as conspicuous as the 
rhizoids of a lichen. Old specimens may crack, break the 
hyphal pillars, and the hymenial crust curl outward so as 
to show the broken pillars attached to the under side. Sterile 
specimens of this species have been heretofore referred to 
S. pedicellatum, but a collection of fertile specimens received 
from Dr. R. P. Burke in May of the present year shows that 
our common species differs from S. pedicellatum by having 
large spores produeed on a straight or but slightly curved, 
mueh larger, spore-bearing organ, paraphyses or hyphal 
branches at the surface of the hymenium curved and densely 
longitudinally interwoven, larger probasidia, and larger and 
thieker fruetifieations. Even in sterile condition the longitu- 
dinally interwoven paraphyses are suffieiently distinetive. 
