442 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
more or less evident hyaline membrane and conspicuous hyaline 
or opaque acute or truncate scale-like projections 2 p long (in 
cross section on top of spores showing as polygonal areas), chiefly 
20-30 /x in diameter. 
Hosts : Panicum obtusum , Ariz. ; P. sanguinale , Miss.; P. vir- 
gatum , Ill. (type). 
This herbarium name of Ellis and Galloway is used as the writer 
believes the fungus to be distinct from Tilletia corona with which 
Tracy and Earle placed it. Some botanists have even thought this 
to be the same as Tilletia Maclagani, which occurs on Payiicum 
virgatum , though the two are quite distinct. The species is inter¬ 
mediate between Tilletia horrida and Tilletia corona. It is more 
closely related to the former from which it differs in the somewhat 
smaller spores and their less conspicuous scales and the more promi¬ 
nent sorus. Its germination is not known. Literature : 29, 74, 
181. 
« • 
Tilletia rugispora Ell. & Gall. 
Tilletia rugispora Ell. & Gall., 1 Ell. & Ev., N. A. Fungi, 2794. 1892. 
Exsiccati : Tilletia rugispora Ell. & Gall., on Paspalum plicatulum , Ell. 
& Ev., N. A. Fungi, 2704. 
Sori in ovaries, subspherical, inconspicuous, about 2 mm. in diam¬ 
eter, concealed by the glumes; sterile cells hyaline or often tinted, 
more or less irregular, polygonal to subspherical, thick walled, vary¬ 
ing from smaller to larger than the spores; mature spores dark 
reddish brown, ovoid to spherical, with rather prominent tinted 
appendages that show at circumference as blunt scales (1-2 p.) and 
on top in cross section (1-2.5 p ) as more or less irregular polygonal 
areas, 18-25 p in length. 
Hosts: Paspalum plicatulum, Tex. (type) ; Paspalum sp., Mex. 
This species is near Tilletia horrida, from which it differs in 
smaller less conspicuously appendaged spores. It differs from 
Tilletia pulcherrima in the somewhat smaller and lighter colored 
spores that are more coarsely appendaged. Tilletia Ulei Schrt. & 
1 The first description was Tilletia rugispora Ell., in Journ. Myc., 7 : 275, in 
1893. Jennings published*the name as a new species but without description. 
May, 1890, in Tex. Agr. Exp. Sta. Bull., 9 : 28. 
