126 
OHIO BIOLOGICAL SURVEY 
EXPLANATION OF PLATE X. 
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. 
1-5. Pleurage zygospora. L Perithecium. 2. Portions of arachnoid mycelium. 
3. Outline of young ascus X 306. 4. Young spore. 5. Mature spores X 306. 
6-7. Pleurage vestita. 6. Perithecium. 7. Rhizoid-like mycelium. 
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