REVISION OF THE NORTH AMERICAN HYDNACEAE 167 
the stem is too stout. The European exsiccati also contain typi- 
cal examples of the American plant, except that Roumeguere 4309 
appears to be more delicate than our plant. 
2. Phellodon alboniger (Peck) 
Hydnum albonigrum Peck, Rept. N. Y. State Mus. Nat. Hist. 50: 
IIO. 1897. ; 
Plant terrestrial, mesopodous, gregarious, confluent, small size ; 
pileus obconical, subconvex, expanded, or slightly depressed sub- 
round to irregular, somewhat uneven, 1-7 cm. wide; surface 
covered with a whitish pubescence, sometimes subglabrous, cine- 
reous to fuscous or mouse-colored, blackish where handled, azonate ; 
margin thin, obtuse, sterile ; substance spongy tomentose іп upper 
part of pileus, compact, hard when dry, fibrous, bluish-black in 
lower part and continuous as a core to the stem, very hygrophanous 
so the water can be squeezed out in drops, juice clear watery ; 
stem short, slender or stout, surrounded below by a large mass of 
spongy tomentum often as large or larger than the pileus, solid 
hard and black within, surface fuscous or mouse-colored, pubes- 
cent, I-2 cm. long, 0.5—1 cm. wide; teeth slender, terete, decurrent, 
whitish or cinereous, becoming black where injured, 2 mm. or less 
long, longest toward stem; spores subglobose, echinulate, white, 
3.5-4 и wide; odor of fresh plant not noticeable, becoming strong 
in drying. қ 
Нав.: Growing in wet ground in woods. July—Aug. 
RANGE: (A) Maine, White ; Massachusetts, Гай; Connecticut, 
Underwood ; New York, Peck, Banker, Earle ; Pennsylvania, 
Schweinits ; Tennessee, Murrill. 
(B) Connecticut, Underwood: New York, Underwood ; New 
Jersey, Ellis ; Delaware, Commons ; Kentucky, Morgan. 
Exsicc.: Ellis, North. Am. Fung. 710, as Hydnum graveolens. 
The type specimen is in the N. Y. State Herbarium at Albany. 
The species is closely related to P. niger (Fries) Karst but differs in 
its lighter superficial color, its whitish tomentum, the less depressed 
pileus, the surface of the pileus not shaggy floccose but only 
pubescent or tomentose, and in the larger mass of tomentum 
about the base. In old specimens the spongy tomentum of the 
cap seems to break up and fall away exposing the hard dark 
underlayer which often appears when thus exposed zonate, the 
adhering pieces of the old tomentum giving the surface a scrobic- 
