28 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 
and 1 in Connecticut. None of the species apparently are of 
economic importance. 
Tolyposporium bullatum (Schrét) Schrét. Figs. 10, 40. 
The ovate sori are found in the ovaries, are about 3-5 mm. in 
length, and are covered by a smooth greenish plant membrane, 
which upon rupturing discloses the granular, black spore 
mass. The spore balls are opaque, black, oblong to spherical 
or polyhedral, contain numerous (over 100) firmly aggluti- 
nated spores, and are 50-160 in length. The spores are light 
reddish brown, or the inner ones semi-hyaline, and are covered 
with a thin, tinted outer coat thrown more or less into ridges 
or folds that bind the spores together; they vary from ovoid 
to spherical or polyhedral, and are 7-12y, rarely 14, in length. 
Host and Distr.: Panicum Crus-galli, Woodmont (Setch- 
ell) ; Unionville, Aug. 26, 1902; New Haven, Sept. 11, 1903; 
New Canaan, Sept. 29, 1903. 
Sometimes Ustilago spherogena occurs in the ovaries of 
the same plant with this. It can easily be distinguished from 
this by its larger sori, which are covered by a hispid mem- 
brane. Figure 40 shows the uppermost ovary only infected by 
the fungus. 
TILLETIACEZE $= Schrot. 
The sori form dusty erumpent spore masses, or are per- 
manently embedded in the plant tissues, often without evident 
distortion of these. The germination is by means of a pro- 
mycelium, which usually gives rise to a terminal cluster of 
elongated sporidia, which sometimes bear whorls of similar 
secondary sporidia; or the primary sporidia, with or without 
fusing in pairs, may give rise to infection threads, or in a 
nutrient medium to a mycelium bearing dissimilar secondary 
sporidia (aerial conidia). Fig. 22. 
Tilletia Tul. 
The sori occur in various parts of the host, usually in the 
ovaries, forming a dusty, dark spore mass. The spores are 
simple, separate, and originate singly in the ends of special: 
mycelial threads that generally disappear rather completely 
