CLINTON: NORTH AMERICAN USTILAGINEAE. 
387 
by Hoi way, has spores somewhat more variable in size than is usual 
on S. vulgare and they have more of a granular appearance. On 
this host, too, the sori are often concealed by the glumes. Litera¬ 
ture: 23, 26, 27, 97, 104, 109, 129, 143. 
Sphacelotheca Seymouriana Clint, n, sp. 
Sorosporium Syntherismae and S. Ellisii , Amer. auct. p. p. 
Exsiccati : Sorosporium Ellisii, 1 on Andropogon Virginicus, Syd., Ust., 
189; Sorosporium Syntherismae (S.) Earl., 1 on Andropogon Virginicus, 
Seym. & Earle, Econ. Fungi, 531. 
I , 
Sori in ovaries forming linear bodies 4-7 mm., or about the length, 
of the glumes between which they extend, rupturing from apex 
and disclosing distinct columella and somewhat agglutinate spore 
mass; sterile cells hyaline, with those of the interior often in 
groups, chiefly subspherical, with those forming the membrane more 
irregular and adhering more permanently, about the size of the 
spores ; spores light brown, often with pitted contents, apparently 
smooth, chiefly subspherical or slightly polyhedral, occasionally 
ovate or ovoid, 7-12 g in length. 
Hosts: Andropogon Virginicus , Ala. (type); Andropogon sp., 
(4a. . 
When the writer first examined the exsiccati specimens of this 
species from Alabama he was in doubt as to its identity and tempo¬ 
rarily placed it under Sorosporium Ecerhartii thinking it might be 
that species with the spore balls dissolved, as the sori of the two are 
similar. Since then he has collected both at the same time in 
Georgia, and although the specimens of the species described here 
were in a young condition they showed no signs of true spore balls. 
The species approaches closely to Sphacelotheca monilifera in the 
type of its sorus but differs in having smooth spores. It is also 
closely related to Sphacelotheca Ischaemi but has larger spores 
and the smaller sorus is confined to the ovaries. It has not been 
germinated. 
Sphacelotheca Chrysopogonis Clint, n. sp. 
Sori usually in all the ovaries of the panicle, linear oblong, about 
3-5 mm. in length, showing between the spreading glumes, with 
1 These are the same collection issued under different names in the two 
exsiccati. 
