Oct. 1902] 
North American Ustilagmeae 
149 
**** Spores with prominent tubercles, spines or 
scales. (Tilletia.) 
TILLETIA EARLEI Griff.—Host: Agropyron occidentale, 
S. Dak. (type). 
This species is peculiar in that the sorus occurs in the modi¬ 
fied culm of his host. 
TILLETIA TEXANA Long n. sp.— Sori in ovaries, ovoid 
or oblong, about 3-5 mm. in length, more or less hidden by envel¬ 
oping glumes, forming a somewhat agglutinated light-reddish 
brown spore mass; sterile cells not very numerous, hyaline, with 
very thick often lamellate walls and central contents; spores very 
light-colored, orange yellow (appearing as if somewhat imma¬ 
ture) chiefly subspherical or spherical, with prominent conical 
tubercles (blunt or sometimes quite pointed) which extend out 
2-3 n to the evident hyaline envelope, chiefly 19-25 n in diameter. 
Host: Hordeum pratense, Tex. (type). 
In Europe Tilletia hordei occurs as a parasite on a species of 
Hordeum but that smut possesses reticulate spores and so is quite 
distinct from the species described here. This description is 
based on the single collection made by Long and as the spores 
have somewhat the appearance of being immature, it may be 
that the description will need some changing with further study 
of the fungus. It is closely related to Tilletia buchloeana but 
apparently differs in the slightly larger lighter colored spores 
with more prominent tubercles and in the character of the hyaline 
membrane. The spores have not been germinated. 
TILLETIA BUCHLOEANA Kell. & Sw.—Host: Buchloe 
dactyloides, Kans. (type). 
TILLETIA CATHESTECI (Henn.) Clint, n. nom.—Usti- 
lago cathesteci Henn., Hedw. 36:212. 1897. 
Llost: Cathestecum procumbens, Mex. (type). 
TILLETIA CORONA Scrib.—Hosts: Leersia lenticularis, 
Miss.; L. oryzoides, D.C. (type), Mo.; L. virginica, D.C. (type), 
Ill., Miss., Ohio. 
TILLETIA PULCHERRIMA Ell. & Gall.—Tilletia pul- 
cherrima Ell. & Gall., Bull. Torr. Bot. Club, 23 :2io. 1896. 
This herbarium name was merely mentioned here by Earle. 
The writer believes the fungus to be a distinct species from Til¬ 
letia corona Scrib. 
TILLETIA RUGISPORA Ell. & Gall.—Hosts: Paspalum 
plicatulum, Tex. (type) ; Paspalum sp., Mex. 
TILLETIA HORRID A Tak.—Host: Oryza sativa, S. Car. 
