168 REVISION OF THE NORTH AMERICAN HYDNACEAE 
ulate character. Such is the appearance of the plant in the 
Schweinitz Herbarium which he referred to Æ. compactum Pers. 
A collection from West Park, N. Y., shows plants faintly zonate 
and with some of the teeth flattened and coalescent forming pseudo- 
pores, perhaps a form approaching P. niger. 
The collections quoted under (B) above show plants of fairly 
constant characters differing from the typical specimens of the first 
list in a somewhat taller habit of growth, the hard interior not 
quite so dark, and the pileus buff or isabelline. Whether these 
represent a distinct species or variety is, however, doubtful, and 
can be decided only by more complete field study. Possibly they 
represent older states of the plant. The specimen examined in 
Ellis, №. Am. Fung. 710 issued as Hydnum graveolens Fries was 
of this type but does not appear to me to answer at all to Fries’ 
description or figure. Most of the plants of this latter type have 
been referred to 27. suaveolens Scop, but this disposition of them 
seems to be as unsatisfactory as the former and in both cases the 
odor appears to be the determining factor of the diagnosis. 
The odor is very marked when the plants are drying and per- 
sists for a long time afterward, but does not seem to be so perma- 
nent as in P. vellereus. It is described by several authors as the 
odor of melilot, but to me it is more like that of bone-meal. 
3. Phellodon vellereus (Peck) 
Hydnum vellereum Peck, Rept. N. Y. State Mus. Nat. Hist. 50: 
110, 1807 
Plant terrestrial, mesopodous or submesopodous, confluent, often 
forming crust-like masses among the dead leaves, cream-colored to 
ash-gray, sometimes brownish ; pileus expanded, subobconic, irreg- 
ular, lobed, depressed, often confluent, 2.5-10 cm. wide; surface 
below by an irre 
the pileus, 1.5-2 cm. long, 0.5-1.5 cm. wide; teeth short, slender, 
terete, acute, shortening to the sterile margin, decurrent, whitish 
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