130 
OHIO BIOLOGICAL SURVEY 
EXPLANATION OF PLATE XII. 
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. 
1-3. Pleurage longicaudata. 1. Ascus contracted X 306. 2. Upper portion of an 
ascus expanded. 3. Spores. 
4-9. Pleurage multicaudata. 4. Perithecium. 5. Outer portion of hair-bundle. 
6. Mature ascus. 7. Old spore in section. 8, 9. Mature spores. 
