Aly Re pies eens ek th 
70 MISSOURI BOTANICAL GARDEN. 
a brownish color. The fungus was isolated and grown in 
pure cultures on the wood of the red gum and on pine de- 
coction agar, as well as on tubes of rice, potato, etc., the 
following cultural characters being from both natural and 
artificial cultures. The description differs but slightly 
from that given by Ellis and Everhart* and has been 
emended by the addition of the conidial stage. 
MyYcELium. 
The colonies resulting from either ascospores or conidia 
are white at first with a hyaline mycelium which later’ 
becomes pigmented in certain of the larger filaments, assum- 
ing a dark brown color. The filaments measure from 4 
to 7 in the mature forms. Conidia appear after 36 
hours, and perithecia in four or five days. 
CONIDIA. 
The conidia are borne in short branching moniliform 
chains in small clusters, falling together in irregular masses 
as they mature (pl. 6,f.1). They are unicellular, hya- 
line, becoming guttulate when old, obovate to elliptical, 
and measure from 4p to 6.54 by 2u to 3.5p, averaging 6 
by 3z. 
PERITHECIA. 
The perithecia are brown at first, but when they are ma- 
ture they become black and carbonaceous and are covered 
sparsely with short, glandular hairs. They are globose, 
or sometimes slightly flattened, measuring 50p to 100p in 
diameter. The hairs measure 104 to 324 in length by 
1.5mto 2, Each terminatesina gland or spherical enlarge- 
ment measuring 24 to 34 in diameter. The perithecium is 
tipped by a long slender beak, black at the base, brown 
* Ellis, J. B. and Everhart, B. M. North American Pyrenomycetes. 
p- 195. (1892). 
