dcsimg

Comprehensive Description

provided by North American Flora
Thecaphora aterrima Tul. Ann. Sci. Nat. III. 7 : 110. 1847
SorospoHum atrum Peck, Bot. Gaz. 5 : 35. 1880. (Type from Colorado, on Carex pennsylvanica.) Tolyposporium aterrimum Dietel, in B. & P. Nat. Pfl. 1^** : 14. 1897.
Sori rather indefinite, at inner base of bracts of staminate spikes, hidden from viewbut on removal of bracts showing as black granular spore-masses, more rarely filling the perigynia (according to Peck) ; spore-balls usually black-brown, opaque, ovoid to spherical, firm, composed of 2-12 or rarely more spores, 17-35 ^, rarely 50 //, in length ; spores dark reddish-brown, triangular, semipolygonal or semicircular in cross-section, more or less obscurely papillate on free surface, chiefly 10-16 i in length.
On Cyperaceae :
Carex adusta, Iowa.
Carex pennsylvanica y Colorado, Kansas.
Carex sp., Iowa. Type locality: France, on Carex prae cox.
Distribution : Iowa, Kansas and Colorado ; also in Europe and Africa.
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bibliographic citation
George Perkins Clinton. 1906. USTILAGINALES; USTILAGINACEAE, TILLETIACEAE. North American flora. vol 7(1). New York Botanical Garden, New York, NY
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