112 
OHIO BIOLOGICAL SURVEY 
EXPLANATION OF PLATE III. 
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. 
1-6. Fimetaria tetraspora. 1. Perithecium showing superficial mycelium. 2. 
Paraphyses with an ascus, showing shape and spore-arrangement. 3. 
Paraphyses. 4. Apical spore of ascus with peculiar enlargement of hyaline 
envelope. 5. Mature spore. 6. Old spores, end and side views. 
7-11. Fimetaria Humana. 7, 8. Perithecia. 9. Young ascus enlarged at the tip, 
due perhaps to the pressure of the young asci. 10. Apical portion of a 
paraphysis. 11. Old spores, hyaline envelope having disappeared. 
12-19. Fimetaria minima. 12. Perithecium as observed under the cover-glass 
with portions of the substratum beneath it. 13. Two perithecia as observed 
under the cover-glass with portions of the substratum beneath them. 14. 
Aciculae of the perithecium. 15. Paraphyses. 16. Paraphyses shriveled 
with two entwining each other. 17. Asc^one showing oil globules which are 
present in the spores of most of the asci. 18. Spores showing the hyaline 
envelope and two oil globules in each. 19. Spores germinating after 20 hours 
in water at room temperature. 
