142 
OHIO BIOLOGICAL SURVEY 
EXPLANATION OF PLATE XVIII. 
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. 
1-9. Sporormia herculea. 1. Perithecium. 2. Upper portion of a paraphysis. 3. 
Young ascus showing thick hyaline wall. 4. Ascus in outline showing spore 
arrangement X 306. 5. Tip of ascus. 6. Young spores. 7. Mature spore. 
8. Other spores in outline. 9. Peculiar apical spore of ascus. 
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