Ustilago hilariicola G. W. Fisch. 1952

Ustilago hilariae Ellis & Tracy, Jour. Myc. 6 : 77. 1890
Uredo Hilariae Sacc. Syll. Fung. 9 : 333. 1891.
Sori in the inflorescence and somewhat in the enveloping leaves, usually elongate, 0.51.5 cm. in length, covered by a thin whitish membrane through which the dark sporemass shows, or hidden entirely by unaltered enveloping parts; spores light reddish-brown, usually subspherical or spherical or occasionally ovoid, minutely echinulate, chiefly 13-17/^ ill length.
On Poaceae :
Hilaria Jamesii , Colorado, New Mexico.
Hilaria mutica^ Arizona. Type locality : Albuquerque, New Mexico, on Hilaria Jamesii. Distribution : Colorado, New Mexico, and Arizona.