Ustilago heterogena Henn. 1904

Ustilago heterogena P. Henn. Hedwigia
Sori on various parts of host, most frequently at nodes of the stem, involving the axial growths and transforming them entirely or their base into a conspicuous tumor, ovate to elongate-lanceolate, often 40 by 15 mm., covered by the thick, smooth envelope of plant tissues, finally rupturing and disclosing a brown-black semi-agglutinated to dusty sporemass ; spores medium to dark reddish-brown, chiefly ovoid to spherical, conspicuously echinulate, 10-14 ^, rarely 16 ^, in length.
On Poaceae:
Lepiochloa scabra Louisiana. Type locality: Brazil, on Lepiochloa virgata. Distribution : Louisiana ; also in South America.