Classification of Ohio Ascomycetes 
25 
XIII. PERISPORIALES (part of the PYRENOMYCETINEAE) 
1. Erysibaceae. Genera known in Ohio are Erysibe, Sphaerotheca, 
Podosphaera, Microsphaera, Uncinula, and Phyllactinia. 
2. Perisporiaceae. Genera known in Ohio are Dimerosporium^ 
Scorias, Antennaria, and Apiosporium. 
3. Microthyriaceae. The genus Asterina is known in Ohio. 
XIV. ASPERGILLALES (ASPERGILLINEAE) 
1. Gymnoascaceae. The genus Gymnoascus must occur in Ohio. 
2. Aspergillaceae. Genera known in Ohio are Aspergillus and 
Penicillium. 
XV. EXOASCALES(EXOASCINEAE) 
1. Exoascaceae. Genera known in Ohio are Exoascus and Taphria. 
XVI. SACCHAROMYCETALES (SACCHAROYMCETINEAE) 
1. Saccharomycetaceae. The genus Saccharomyces is known in 
Ohio. 
LIST OP PAPERS CONSULTED 
1. Bachman, Freda M. A new type of spermagonium and fertilization in 
CoUema- Ann. Bot. 24 : 747-760. pi. 49. 1912. 
2. Bachman, Freda M. The origin and development of the apothecium in 
Collema pulposum (Bern.). Ach. Archiv. Zellforsch. jo: 369-430. pi. 
30-36. 1913. 
3. Bary, A. de. Recherches sur le developpement de quelques champignons 
parasites. Ann. Sci. Nat. IV 20 ’ 5-148. pi. 1-13. 1863. 
4. Baur, Erwin. Zur Frage nach der Sexualitat der Collemaceen. Ber. 
Deutsch. Bot. Ges. i 6 ’- 363-367. pi. 23. 1898. 
5. Baur, Erwin. Untersuchimgen iiber die Entwickelungsgeschichte der 
Flechtenapothecien. Bot. Zeit. 62 : 21-44. f. 1. pi. 1-2. 1904. 
6. Bessey, C. E. A synopsis of the plant phyla. Univ. Nebraska Stud. 
1-99. 1907. 
7. Bessey, C. E. Outlines of plant phyla. 1-20. Univ. Nebraska, 1909. 
See also the second, third, and fourth editions; 1911, 1912, and 1914. 
8. Bessey, C. E. Revisions of some plant phyla. Univ. Nebraska Stud.. 
14 : 37-73. 1914. 
