62 | ASSEMBLY, 
PILIDIUM GRAMINICOLA, N. sp. 
Perithecia minute, .008 to .014 inch broad, depressed, erum- 
pent, orbicular or hysteriform, membranous, opening widely, 
black, the disk whitish, the mouth laciniate-dentate; spores oblong 
or subfusiform, colorless, triseptate, .0012 to .0016 inch long, 
.0004 to .00045 broad ; sporophores short, colorless. 
Dead leaves of blue joint, Calamagrostis Canadensis. Mount 
Marcy. June. 
GLHOSPORIUM LINDEMUTHIANDUM, Sacc. 
Living bean pods, especially of the butter or wax bean. Menands. 
August. 
An injurious fungus that produces brown spots on the pods, thus 
spoiling their appearance and diminishing their value. 
GLGOSPORIUM SEPTORIOIDES, Sacc. 
Living leaves of white oak. Quwercus alba. Gansevoort. 
September. 
GLGOSPORIUM ROBERGEI, Desm. 
Living leaves of water beech, Carpinus Americana. 
Gansevoort. September. 
MELANCONIUM BETULINUM, Schm. 
Dead bark of white birch, Betula populifolia. Menands. 
September. 
Distinguished from J. bicolor by its longer spores. 
MELANCONIUM DIMORPHUM, N. sp. 
Pustules small, subcutaneous, slightly prominent, subconical, 
black, containing a small white stroma; spores of two forms, one 
narrow, cylindrical, straight or curved, .0003 to .0004 inch long, 
.00008 broad, the other oblong, elliptical or subfusiform, colored, 
.0004 to .0005 inch long, .0002 to .00025 broad, oozing out in 
a black mass or in tendrils. 
Dead branches of alder, Alnus viridis. Adirondack mountains. 
June. 
Remarkable for the two kinds of spores. In some pustules the 
broader spores are more numerous, in others the narrower ones, 
but both kinds were found in all the pustules examined. Can the 
narrow ones be broken or effete sporophores 4 ; 
