MONOGRAPH ОҒ CHAETOMIUM AND ASCOTRICHA 201 
Through the kindness of the New York Botanical Garden it 
has been possible to examine type specimens of this interesting 
species. The large diameter of the terminal hairs and their 
exceedingly long and regular cylindrical spiral distinguish this 
from all other species. 
23. CHAETOMIUM BOSTRYCHODES Zopf, Abh. Bot. Ver. Prov. 
Brandenburg 19: 173; 1877. Nova Acta Acad. Leop.-Carol. 
42: 277. pl. 20, f. 14-26. 1881 
Chaetomium caninum Ellis & Everhart, Jour. Myc. 4: 79. 1888. 
Chaetomium formosum Bainier, Bull. Soc. Myc. France 25: 215. 
pl. 20, f. 6-9. 1910. 
Chaetomium formosum, хат. neglectum Вашег, 1. с. 25: 217. 
pl. та, Т. 8. 1910. 
Chaetomium formosum, хат. ovatum, Bainier 1. с. 25: 216. pl. 20, 
f 1-5. 1910. 
PLATE 13, FIGS. I-II 
Steel gray. Perithecia of medium size, extremely variable 
in shape, broadly ovate, globose or nearly cylindrical, generally 
with a bluntly pointed base, 340 X 220 и (168-350 X 131-230), 
frequently provided with black, straight or re-curved cirrhi. 
teral hairs not numerous, encrusted, clearly and evenly septate, 
tapering, at base dark olive-brown and about 3.8 и in thickness, 
at tips pale yellow or hyaline, frequently collapsed. Terminal 
hairs encrusted and roughened with spine-like projections through- 
out, at base straight or very slightly flexed, dark olive-brown to 
black and about 44 in thickness, slightly less colored at tips, 
always more or less spirally coiled but in this respect extremely 
varied. In the type either regularly coiled with seldom more than 
in turn are septate and spirally coiled. Asci short, stout, club- 
shaped, 8-spored, 50 X 12 и, pars sporif. 24и. Spores when 
young greenish, hyaline, with granular contents, when mature 
pale with olive-brown tint, oval to nearly spherical, clearly or 
лгі only in this species, 74 X hi бу АРТА» um 
seen edgewise, compressed, 4.8 и broad. 
Exsiccatt.—Fung. Europ. Edit. Nova, Series П, XXXIV, 
3340; Myc. March. No. 43. | 
