REVISION ОЕ THE NORTH AMERICAN HypNACEA® 133 
In some instances also the formation of pores by the coalescence 
of the teeth is carried so far that one might be deceived into sup- 
posing that the plant belonged to the Polyporaceae. 
10. Steccherinum adustulum sp. nov. 
Plant pileate, stipitate or sessile, rarely resupinate, often de- 
formed; pileus dimidiate, reniform, flabelliform, or irregular de- 
pressed, sometimes infundibuliform ; surface radiately fibrous, 
. obscurely zonate, minutely pubescent, white with pale brownish 
zones, becoming cream-colored when dry, 0.5-4 cm. wide; margin 
thin, acute, crimpled when dry, subfimbriate, substerile; substance 
tough, fibrous, white, brittle when dry, very thin, less than 1 mm. 
thick; stem usually slender, commonly more or less deformed, 
excentric, lateral or wanting, solid, velvety pubescent, enlarged at 
the base; teeth slender, crowded, flexuose, subterete or flattened, 
often forked, puberulent, less than 2 mm. long, 5 and 7 to one 
millimeter, white becoming cream-colored to pale ochraceous, 
not turning dark ; spores ovoid, smooth, granular, hyaline, 1.5 by 
259. 
Has. : On rotten sticks on ground in woods. July. 
КАКСЕ: New York, Lodenstine, Banker; New Jersey, Ellis. 
The species shows considerable degree of variation from mesop- 
odous through pleuropodous to apodous and even resupinate forms. 
The most common form is that of a horizontal dimidiate or reniform 
pileus with lateral, vertical or inclined stipe. In some cases the 
base of the stipe spreads out over the substratum, and producing 
teeth forms a resupinate portion of the plant. More commonly, 
however, the resupinate forms simply have the margin reflexed or 
without flexure projecting from the substratum ав а pileus. When 
wholly resupinate the plant is scarcely distinguishable from some 
forms of 5. ochraceum, but I have always found these associated 
with the pileate plants in such a way that there was no question 
as to the identity of the species. Тһе pileate forms show very 
close relationship to 5. adustum and the plant has usually been 
referred to that species, but it differs in its smaller size, more deli- 
cate structure, slender flexuose almost capillary teeth, its permanent 
light color throughout showing no trace of an “adustus ” margin 
or teeth, and finally its ovoid and shorter spores. I have found 
this plant common in mixed woods about Schaghticoke, N. Y., 
but have never found S. adustum in that region. Тһе spores of 
