REVISION OF THE NORTH AMERICAN HYvDNACEAE 147 
Hydnum fennicum басс. Syll. Fung. 6: 433. 1888. 
Phaeodon fennicus Hennings, Die Natürl. Pflanzenf. 1!** : 140. 
1808. 
Plants terrestrial, mesopodous, somewhat gregarious, medium 
size, reddish brown or purplish; pileus convex, subumbilicate, 
slightly uneven, 4-8 cm. wide; margin thin, fertile, inflexed ; surface 
broken up into small thick scales which аге arranged in more or less 
concentric and radiating lines, scales diminishing in size toward 
at tips, 3-4 mm. long, 0.2-0.3 mm. wide, but with many minute 
teeth scattered irregularly among the others; spores subglobose, 
tuberculate, 6-7 и wide, brown; taste bitter. 
Нав. : On ground in mixed woods. Aug.—Oct. 
Rance: Massachusetts, Seymour; New York, Banker 735, 
Peck; New Jersey, Ellis ; Kentucky, Morgan ; Tennessee, Murrill. 
The plant has been usually referred to S. imbricatus on the 
basis of its scaly pileus but it differs from that species in its smaller 
size, more slender stem, finer teeth, reddish color, and the dark 
usually bluish base of the stem. Many of the specimens distrib- 
uted by Ellis in М. Am. Fung. under No. 926 (М. imbricatum) 
apparently belong to this species. 
9. Sarcodon Underwoodii sp. nov. 
Plantterrestrial, mesopodous, small to medium size ; pileus sub- 
plane, depressed, irregular, 6-10 cm. wide; margin thin, inflexed, 
fertile with short teeth ; surface covered with small narrow scales 
more or less floccose toward margin, mostly 1-2 mm. wide, ends 
upturned, subzonately arranged, color pale brown or tan, some- 
what darker on the scales, grayish brown toward the margin ; 
substance fleshy, whitish, drying thin (less than 1 mm.), hard, dark, 
brown to black, subtranslucent; stem irregular abruptly tapering 
and radicating below, subconcolorous, scaly and roughened above 
by scattered spines, 3-5 cm. long, 1-3 cm. wide; teeth small, 
slender, terete, acute, crowded, decurrent, scattered nearly to base 
of stem, pale cinereous nearly white, light brown when dry, 2-3 
mm. long, 0.5 mm. wide, in dried plants less than 2 mm. long, capil- 
