110 
OHIO BIOLOGICAL SURVEY 
EXPLANATION OF PLATE II. 
Note: Where no magnifications are given an enlargement of 79 diameters for perithecia, and 450 diame¬ 
ters for hairs, paraphyses, asci, and spores is to be understood. The illustrations were drawn from a 
magnification double that given here and reduced one-half in the process of reproduction. 
1-8. Chaetomium bostrychodes. 1,2. Two types of apical hairs. 3. A lateral hair 
showing the hyaline tip. 4. Paraphyses. 5. Young asci. 6. Spore-bearing 
portion of a mature ascus. 7. Mature ascus with only six spores visible. 8. 
Spores. 
9-12. Chaetomium datum. 9-11. Several sections of an apical hair. 9. Near the 
base. 10. At the point of branching. 11. At the hyaline tip. 12. Spores, one 
with an oil globule. 
13-18. Chaetomium funicola. 13. Perithecium. 14. Part of a simple apical hair 
showing the hyaline tip. 15, 16. Branched hairs. 17. Rhizoids. 18. 
Spores. 
