Chaetomium aterrimum Ellis & Everh. 1910

Chaetomium aterrimum Ellis & Ev. sp. nov
Perithecia scattered, loosely attached, black, ovoid or subglobose, 275^ high, perforated at the apex, thin, membranaceous, densely clothed with hairs; lateral and basal hairs numerous, smooth or slightly incrusted, flexuous, light-brown, septate, in dried specimens breaking off close to the perithecium; apical setae dark-brown, gradually becoming almost black toward the end, thickly incrusted, 6// thick at the base, straight for 120-180//, then coiling 10-15 times in a close, regular spiral 400-450/* long and 50-60// in diameter; setae at the tip 10-12// thick; spores yellow-brown, ellipsoid, slightly apiculate at both ends, 6-7.5X4-5//.
On damaged wheat.
Type collected on damaged wheat in a stack, Rockport, Kansas, December 21, 1891, Elam Bartholomew 448 (herb. N. Y. Bot. Card.).
Distribution : Known only from the type locality.