204 MONOGRAPH OF CHAETOMIUM AND ASCOTRICHA 
of a spiral, producing here and there along their convolutions short- 
branches which in turn are septate, tapering and irregularly coiled. 
Asch club-shaped, 8-врогей, 50 X 10 и, pars sporif. 24 и. Spores 
when young greenish, hyaline, filled with granular contents, when 
mature pale with slight olive tint, ovate to globose, sometimes 
minutely apiculate at both ends, 6.6 X 5.1 и (5.6-8.1 X 4.8-5.6), 
when seen edgewise, compressed, 4.5 ш broad. 
On muskrat dung, Massachusetts; rat dung, Liberia, Herb. R. 
Thaxter; on dog dung, Connecticut (Chivers No. 20). Type 
locality: Paris(?); on goat and sheep dung. 
It is possible that this species may be identical with Ch. 
rostratum, described by Spegazzini in 1899, but type specimens 
of his form are not available and it is impossible to decide with 
certainty from a study of the original description. Spegazzini’s 
species has been listed, therefore, among the doubtful forms. 
The species may be easily distinguished from Ch. bostrychodes 
Zopf, which it most nearly resembles, by the extreme length of 
the perithecium, a characteristic which has proved constant 
through cultures including many generations. 
26. CHAETOMIUM COCHLIODES Palliser, N. A. Flora 3: 61. 1910” 
Chaetomium flexuosum Palliser, N. A. Flora 3: 61. 1910. 
PLATE 15, FIGS. 1-8 
Grayish-green, brilliant green, often losing color and becoming 
dark brown in dry herbarium material. Perithecia globose ог 
subglobose with bluntly pointed base, 340 X 295 и (318-360 Х 
273-310), forming black cirrhi in comparatively few cases only, 
producing a heavy mass of stout, dark olive-brown to blac 
rhizoids which anchor the plants firmly to the substratum. Lat: 
eral hairs numerous, irregularly and sparsely septate, evenly rough- 
ened with extremely fine projections, some hairs rather stout, 
tapering, straight or evenly bent, at base about 5.3 шіп thickness 
and dark olive-brown to black, above faded yellow, at tips fre- 
quently hyaline, other hairs loosely and irregularly twisted 
through their entire length, still others straight for a long distance, 
then spirally twisted. Terminal hairs very numerous and finally 
interwoven forming a thick, massive, shaggy head, always of 
two types; (a) thick, stout, projecting beyond the dense portion 
of the head, then becoming spirally coiled with about three ОГ ` 
four convolutions, dark olive-brown, almost black below, fading | 
above to light yellow or becoming colorless, evenly roughened — | 
throughout and without visible septa, at base about 7.54 E 
