Tilletia earlei Griffiths 1902

Tilletia earlei Griff. Bull. Torrey Club 29 : 290. 1902
Sori in culms usually affecting next to upper internode, forming a somewhat swollen body 1-10 cm. in length, rupturing by longitudinal fissures which disclose a semi-dusty lightbrown spore-mass; sterile cells smaller than spores, often with thick smooth wall; spores slightly tinted to light golden-brown, chiefly subspherical or spherical, occasionally ovoid, with coarse bluntish tubercles extending out about 2 fi to the evident hyaline envelope, chiefly 18-22 fi in diameter.
On Poaceae :
Agropyron occidentale. South Dakota. Type locality : Aberdeen, South Dakota, on Agropyron occideniale. Distribution : Known only from its type locality.