132 REVISION OF THE NORTH AMERICAN HYDNACEAE 
fragments and give little idea of many important characters of the 
species. Even these show considerable differences but without 
knowing the habit and general character of the plant from which 
they were obtained, it would be impossible properly to discriminate 
species. 
о. Steccherinum adustum (Schw.) 
Hydnum adustum Schweinitz, Syn. Fung. Car. Sup. 77. 1818. 
Plant pileate, stipitate to subsessile, more or less complicated ; 
pilei usually several, medium size, the mass 4-8 cm. wide, 
subdimidiate, reniform or sometimes flabelliform, lateral, rarely 
spreading around behind the stipe and becoming by confluence 
' subregular, subplane, convex, depressed toward the stipe, rough- 
ened above with more or less abortive pileoli, 2—6 cm. wide; 
surface subeven, finely pubescent, whitish to buff and reddish-um- 
ber toward the margin, more or less obscurely zonate ; margin thin, 
acute, fertile to substerile ; substance fibrous, dry, whitish to pale 
buff, brittle when dry, 2 mm. or less thick ; stem short stout, sub- 
cylindrical to irregular or compressed, more or less enlarged be- 
low, velvety pubescent, solid, hard, whitish within, branching above 
often into a series of lateral pilei ; teeth slender, tapering, crowded, 
straight, angular to subterete, acute, often forking and fimbriate, 
sometimes flattened and confluent forming concentric bands of 
pores, subdecurrent, white, becoming ochraceous to umber or fus- 
cus, sometimes bluish, 1-3 mm. long, 0.1—0.2 mm. wide, 4 and 5 
to one millimeter; spores pedi smooth, hyaline, lili! ob- 
liquely пране тіпше, 1-1.5 х 
Нав. : On dead decaying, half buried branches. Aug.—Nov. 
NN : Connecticut, Underwood & Earle, White; New York, 
Earle ; New Jersey, Е 25; Pennsylvania, Sumstine, Jackson ; Vir- 
ginia, Maxon, Murrill; North Carolina, Memminger ; Alabama, 
Earle ; Ohio, Lloyd, Morgan ; Kentucky, Lloyd; Тома, Holway ; 
Missouri, Demetrio, Glatfelter. 
Icon. : Schweinitz, ор. cit. pl. 2. f. 7-9. 
Exsicc.: Rabenhorst-Winter, Fung. Eur. 3324 ; Ellis, N. Am. 
Fungi. 317. 
The species presents a considerable amount of variation in 
form and coloring. Тһе plant is usually white throughout at 
first becoming darker on the teeth and margin with age or in dry- 
ing. The darkening of the margin and teeth in some cases be- 
comes only a deep buff and in other cases becomes a dark lavender 
or blue which sometimes spreads more or less over the pileus. 
