MONOGRAPH OF CHAETOMIUM AND ASCOTRICHA 
163 
in the form of a densely aggregated mass of fungus threads 
radiating in ropy strands from the point of origin. 
haped or rarely linear 
walled, delicate, stalked, evanescent, club-s 
and cylindrical, eight-spored 
frequently olive-brown, typically lemon-shap 
Asci thin- 
Spores single-celled, colored, most 
KEY TO THE SPECIES OF CHAETOMIUM 
I. Terminal hairs unbranched. 
А; 
В. 
n 
D 
Terminal hairs straight or и во. Ѕрогеѕ 
uërg triangular. 
Terminal hairs flexuous, circinate at their 
tips. 
Terminal hairs slender, about 4и in thick- 
ness, with open, circinate tips. Plant blue- 
gray to blue-black. 
Terminal hairs stout, about ти in thickness, 
coarsely encrusted, with closed, circinate 
tips 2-3 times re-curved. Plant gray- 
ack, 
Terminal hairs tortuous, consisting of succes- 
sively reversed loops with connecting 
arch ips circinate 
es - 
Terminal hairs stout, 15 4 in thickness at 
1 
crown of terminal arch. тсһез short 
thecium large with diameter as great as 
1050 д. 
Terminal hairs slender. about бы іп thick- 
ness at crown of terminal arch. rches 
long and graceful, loops far apart. Peri- 
thecium not exceeding 340 и in diameter. 
Terminal hairs rather slender, about 7.5 и а 
mated. т not exceeding 350 и 
in diam 
- Terminal sued tortuous or spirally re 
Terminal hairs contorted as well intri- 
cately апа irregularly Vise coiled, 
usually with arched circinate tips. Регі- 
thecia subglobose. Plant gray-black. 
enbinal hairs coi s 
bose. Plant blue- 
M 
“ 
yrs 
8. Ch. 
pay oy 
g 
Q 
= 
с 
с 
= 
g 
trigonosporum (p. 166). 
. murorum (p. 166). 
‚ circinatum (р. 168). 
. contortum (р. 169). 
. simile (p. 169). 
‚ crispatum (р. 171). 
‚ tortile (р. 172). 
convolutum (p. 173). 
