MONOGRAPH OF CHAETOMIUM AND ASCOTRICHA 207 
the one hand, and on the other hand with CA. globosum Kze. 
From the former it differs in its straight terminal hairs, and in 
the fact that the terminal hairs never form a dense head. From 
the latter it differs also in its loose head of terminal hairs and in 
the fact that it possesses straight and stout, coarse, spirally coiled 
terminal hairs. 
28. CHAETOMIUM TORULOsUM Bainier, Bull. Soc. Мус. France 
25: 224. Ph 23. 1910 
PLATE 16, FIGS. 1-5 
Golden-yellow. Perithecia of medium size, rather tall and 
elongated, vase-shaped, 355 X 170 (290-140 X 150-187), fre- 
quently provided with short, stout, blue-black cirrhi. Lateral 
hairs numerous, varying in length, delicate, smooth, generally 
slightly curved or bent, clearly and regularly septate, near base 
dark olive, about 3.7 и in thickness, gradually fading above to 
yellow and ending in extremely slender, colorless, crumpled tips. 
Terminal hairs almost entirely concealed at maturity by the spore 
mass, long, slender, graceful, irregularly flexed, clearly and 
regularly septate to near the tips, conspicuously constricted at, 
and inflated between, the septa, dark olive-brown at base, about 
3.8 и in thickness, very gradually fading and tapering for a long 
distance, terminating in a long colorless, refractive thread. Asci 
irregularly club-shaped, 8-spored, 40 X IO y, pars sporif. 18 и. 
Spores when young hyaline, filled with refractive globules, when 
mature very dark, rich olive-brown, lemon-shaped, apiculate, 
extremely variable in size, 9 X 7.6 ы (73-113 Х 6.4-9), when 
seen edgewise, compressed, 4.5 и broad. 
In cultures of old paper, muskrat, rat and rabbit dung from 
various localities in New England (Chivers No.5). Type locality: 
Paris(?). i 
This species may be easily distinguished from Ch. ampullare, 
which it most nearly resembles, by the fact that the perithecia 
are less elongated, the lateral hairs much more numerous and 
shorter, and the terminal hairs less rigid and conspicuously con- 
stricted at the septa. 
Species DUBIAE 
Unfortunately it has been impossible to identify certain forms 
which have been described from time to time, on account of the 
fact that their characteristics are not given in sufficient detail 
