132 
OHIO BIOLOGICAL SURVEY 
EXPLANATION OF PLATE XIII. 
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. 
1-4. Pleurage dakotensis. 1. Perithecium. 2. Agglutinate hairs. 3. Mature 
ascus. 4. Mature spore. 
5-12. Pleurage curvicolla. 5. Perithecium. 6. Apical hair. 7. Mycelium from 
agar. 8. Young ascus with thick hyaline wall. 9. Young ascus showing a 
few of the many spores forming. 10. A spore. 11. Germinating spores. 
12. Conidial stage. 
