. 
172 MONOGRAPH OF CHAETOMIUM AND ASCOTRICHA 
Ch. crispatum differs in its peculiarly contorted terminal 
hairs from all other species which the writer has studied, with the 
exception of Ch. contortum, Ch. simile and Ch. tortile. It has a 
smaller perithecium and terminal hairs of much smaller diameter 
and with more irregular coilings than in Ch. contortum; terminal 
hairs of slightly greater diameter and with much more irregular 
coilings, and spores of greater diameter than in Ch. simile; a 
smaller perithecium, more regularly contorted hairs and larger 
spores, than in Ch. tortile. 
The writer has seen specimens of the exsiccati mentioned 
above and has made and examined mounts from them. 
7. CHAETOMIUM TORTILE Bainier, Bull. Soc. Myc. France 25: 214. 
Ы. 22. 1910 
PLATE 9, FIGS. 13—17 
On rabbit dung, Hanover, New Hampshire (Chivers No. 1) 
Type locality: Bainier makes no mention of the place where he 
found this species or the substratum on which it grew. 
Ch. tortile is in certain respects similar to Ch. contortum, Ch- 
crispatum, and Ch. simile. The terminal hairs are much more 
complicated in their twistings than in those of the other species 
mentioned and more slender than those of Ch. contortum. The 
Spores are smaller than those of Ch. contortum or Ch. crispatum. 
