104 Peck : NEW SPECIES OF FUNGI 
Armillaria ventricosa (Peck) 
Lentinus ventricosus Peck, Bull. Torrey Club 23: 414. 1896. 
Pileus fleshy, convex or nearly plane above, glabrous, shining, 
white, the thin margin involute, flesh white or whitish ; lamellae 
narrow, close, decurrent, sometimes dentate or denticulate on the 
edge, whitish ; stem short, thick, ventricose, solid or sometimes 
hollow through erosion by insects, abruptly narrowed at the base, 
annulate, white or whitish ; spores 10-12 » long, 5-6 p» broad. 
Pileus 8-15 cm. broad; stem 5-10 cm. long, 1.5-2.5 cm. 
in the widest part. ; 
Ground. Alabama. December. L.M.Underwood.— District 
of Columbia. November. T. A. Williams. 
Fresh specimens received from the last mentioned locality indi- 
cated that this mushroom belongs rather to the genus Armillaria 
than to Lentinus. 
GEOLOGICAL HALL, ALBANY, NEw YorK. 
