Comprehensive Description
provided by North American Flora
Ustilago holwayana P. Henn. Bot. Gaz.
Sori in the inflorescence, elongate, 2 cm. or more in length, concealed by leaf-sheaths, at first covered by a thin membrane which soon ruptures disclosing a black-brown dusty sporemass surrounding remains of inflorescence as a columella ; spores medium-dark reddishbrown, ovoid to spherical or occasionally slightly angled, rather prominently echinulate,
12-16 ji in length. On Poaceae :
Paspalum velutinum,'M.Q-Kco. .
Type locality: Patzcuaro, Michoacan, Mexico, on Paspalum veluttnum.
Distribution : Mexico.
- bibliographic citation
- George Perkins Clinton. 1906. USTILAGINALES; USTILAGINACEAE, TILLETIACEAE. North American flora. vol 7(1). New York Botanical Garden, New York, NY
