CLINTON: NORTH AMERICAN USTILAGINEAE. 
425 
Tolyposporella Chrysopogonis Atks. 
Tolyposporella chrysopogonis Atks., Bull. Corn. Uni., 3 1 : 16. 1897. 
Exsiccati: Tolyposporella chrysopogonis Atks., on Chrysopogon nutans, 
Barth., Ell., & Ev., Fungi Col., 1686. 
Sori on inner surface of leaf sheaths by which they are concealed, 
forming linear more or less merged striae of black granular-agglu- 
tinated spores ; spore balls black, opaque, more or less irregular, 
oblong to spherical, of many firmly agglutinated spores, 50-175 p in 
length; spores dark brown, chiefly subspherical or occasionally 
somewhat flattened, surrounded by a very prominently swollen and 
less deeply tinted sac-like envelope (of variable width and more or 
less sharply marked off from an inner dark thin layer) smooth, 
chiefly 9-12 p in diameter exclusive of the envelope. 
Host: Chrysopogon nutans, Ala. (type), Tex. 
This is the species upon which Atkinson founded the genus. 
The peculiar sac-like envelope by which the spores are surrounded 
and which serves to bind them together is probably only the swollen 
remains of the fertile hyphae though possibly it is a true epispore. 
It constitutes the chief characteristic of the genus. Atkinson has 
described the germination of the species. Literature: 11. 
Tolyposporella Brunkii (Ell. & Gall.) Clint. 
Ustilago ( Sorosporium ?) Brunkii Ell. & Gall., Journ. Myc., 6: 31. 1890. 
Ustilago apiculata Ell. & Gall., 1 Tex. Agr. Exp. Sta. Bull., 9 : 29. 1890. 
Tolyposporella Brunkii Clint., Journ. Myc., 8: 147. 1902. 
Exsiccati: Ustilago Brunkii Ell. & Gall., on Andropogon perforatus , Syd., 
Ust., 204. 
Sori on inner surface of leaf sheaths though often showing 
through, forming short linear striae usually so thickly placed as to 
become merged into a coating of black granular spores; spores of 
different stages of development (the younger smaller and light olive, 
the older often opaque and olive black), more or less agglutinated 
but not in definite spore balls, chiefly subspherical or spherical, 
obscurely granular, with rather uniformly thickened epispore (2—4 p) 
1 Listed by Jennings as a n. sp. with a note but no description given. 
