84 GRIFFITHS: CONCERNING SOME WEST AMERICAN SMUTS 
culture), September 12, 1902 (type); Santa Rita Mountains, Ari- 
zona, October 1, 1902 (Griffiths & Thornber); Empire Ranch, 
Arizona, September 27, 1902 (Griffiths & Thornber). 
This is a very common and conspicuous fungus throughout the 
Santa Rita Mountains. It was abundant in the type locality as 
well as on the south side of the mountains in 1903, but no collec- 
tions were made of it. It usually destroys all of the heads on the 
bunch of grass which it attacks. 
Sorosporium Eriochloae sp. nov. 
Sori in ovary and surrounded by a sterile membrane which 
projects but slightly beyond the glumes of the host, its base sur- 
rounding the aborted pistil and black powdery mass of spores, but 
the distil end empty or containing only the distal portions of the 
aborted pistil; its cells hyaline, slightly longer than broad, upper 
portion early becoming lacerated and recurved; spore-balls sub- 
globose, angular and very irregular in both outline and size, 50- 
65 # by 50-105 p, easily separable; spores dark fuscous, subglo- 
bose, 10-13.5 # in diameter, angular, with thin, smooth epispore, 
coarsely granular contents and small but distinct nuclear area. 
On Lviochloa punctata (Linn.) W. Hamilt., Empire Ranch, 
Santa Rita Mountains, Arizona, September 28, 1902 (Griffiths & 
Thornber). The material cited above is quoted as the type be- 
cause it is more plentiful than other collections which the writer 
has made. It was collected by me in the spring of rgo1 in native 
hay on the ranch of Col. H. C. Hooker in Sulphur Spring Valley, 
Arizona, and subsequently observed during the fall of 1903 in va- 
rious localities in southern Arizona. It is a very common species. 
Ustilago lycuroides sp. nov. ‘ 
Sorus in ovary which is inflated to a globular, olive greet 
body, covered with the thin, wrinkled and modified integument, 
—I.5 mm. in diameter, bearing at its distal end the style and stigma _ 
but little modified, the interior being completely filled with a hard, — 
brittle mass of spores which are brown, subglobose to slightly oval 
and angular, 9.5 to 13 # in diameter’; epispore thin, smooth, con- _ 
tents granular with a distinct central or eccentric nuclear area. : 
On Lycurus phleoides H.B.K., Santa Rita Mountains, Arizona, : 
September, 1902 (Griffiths & Thornber). This appears to be 4 
very rare species. Only a few smutty heads were found. The 
exact type locality is one mile north of Greaterville, on the road 
to Rosemont. | 
