88 
OHIO BIOLOGICAL SURVEY 
or 5 mic. wide edge view, with a germ-pore extending nearly the entire 
length of the spore, and a hyaline envelope prominent when spores have 
been removed from the ascus, and quite persistent. 
Habitat: American specimens on dung of horses and cows; type on 
dung of hare. 
Distribution: Rhode Island to Ohio, Montana, Kansas, and Missis¬ 
sippi; also in Europe. 
Illustrations: PI. IV, f. 9-16; Mem. Torrey Club 11 : pi. 3, f. 4-8; 
Grevillea 6: pi. 94, f. 2. 
Type Locality: Leipzig, Germany. 
Distinctive Characters: Bristly hairs of the perithecia and com¬ 
paratively large spores. 
Notes: Griffiths and Seaver give perithecia 270x220 mic., asci 75-130x13-21 mic., and spores 
10-18x8-11 mic. 
Plants grown in the laboratory, Feb. 7, 1917, on horse dung collected by the author at Oxford, 
Nov. 2, 1913. 
2. Pleurage Fries, Summa Veg. Scand. 418. 1849. 
Schizothecium Corda, Ic. Fung. 2: 29. 1838. Not Schizotheca Ehrenb. 1832. 
Perithecia superficial or sunken, membranous or coriaceous; paraphyses 
ventricose or filiform-tubular, usually longer than the asci and agglutinate; 
asci without an apical perforation, stretching at maturity; spores ellipsoid, 
with or without primary appendages, but always having attached to them 
at maturity two or more hyaline, gelatinous, secondary appendages of 
variable length. 
Type species, Schizothecium fimicola Corda. 
Asci 4-spored. 
Primary appendages of spores reduced to a small triangular apiculus. 
1. P. taenioides. 
Primary appendages of spores elongate and cylindric. 2. P. anserina. 
Asci 8-spored. 
Primary spore-appendages present. 
Perithecia hairy above the substratum. 
Beak hairy. 
Hairs agglutinate and consisting of bunches of irregular cells. 
Spores 2-seriate. 3. P. conica. 
Hairs short, scattered or in tufts. 
Hairs scattered. 
Hairs bristly, light-brown, tipped with a colorless cell. 
4. P. amphicornis. 
Hairs not bristly, hyaline throughout. 5. P. hyalopilosa. 
Hairs in tufts. 6. P. immersa. 
Beak naked, black. 
Spores consisting of a fertile cell at each end of a long, hyaline 
filament. 7. P. zygospora. 
Spores simple with usually four gelatinous appendages at each end. 
8. P. vestita. 
