82 NORTH AMERICAN FLORA [VoLuME 9 
53. ISCHNODERMA Karst. Medd. Soc. Faun. Fl. Fenn. 5: 38. 1879. 
Hymenophore large, annual, epixylous, sessile ; surface pelliculose, glabrous: context 
light-brown, fleshy to slightly corky, friable when dry; tubes small, thin-walled: spores 
smooth, hyaline. 
Type species, /schnoderma resinosunt (Schrad.) Karst. 
1. Ischnoderma fuliginosum (Scop.) Murrill, Bull. Torrey 
Club 31: 606. 1904. 
Boletus fuliginosus Scop. Fl. Carn. ed. 2.2: 470. 1772. 
Boletus rubiginosus Schrad. Spic. Fl. Ger. 168. 1794. (Type from Germany.) 
Boletus resinosus Schrad. Spic. Fl. Ger. 171.1794. (Type from Germany.) 
Trametes benzoina Fries, Epicr. Myc. 489. 1838. 
Ischnoderma resinosum Karst. Medd. Soc. Faun. Fl. Fenn. 5: 38. 1879. 
Pileus very large, subimbricate, laterally connate, effused-reflexed, often covering the 
entire under surface of logs, the reflexed portion applanate, 5-15 cm. long, 10 to many cm. 
broad, 1-2.5 cm. thick; surface pelliculose, floccose, rugose, zonate, fuliginous, ivory-black 
and dark-fulvous, with a conspicuous resinous appearance; margin acute, concolorous, 
inflexed on drying, entire or undulate: context fleshy, becoming corky with age, very firm 
and rather fragile when dry, light-brown, 5-10 mm. thick; tubes pallid to umbrinous, 5-8 
mm. long, mouths minute, white, angular, equal, becoming umbrinous and somewhat 
irregular with age, edges thin, fimbriate to lacerate ; spores smooth, cylindrical, subcurved, 
hyaline, 4-6 & 1.5-2 #. 
TYPE LOCALITY: Carniola. 
Hasitat: Fallen trunks of basswood, maple, fir, spruce, and certain other trees. 
DISTRIBUTION: Canada to Florida and west to Wisconsin ; also in Europe. 
ILLUSTRATION: Fries, Ic. Hymen. pl. 483, f. 2 
Exsiccati: Ellis & Ev. N. Am. Fungi 406: Shear, N. Y. Fungi 722; Rab.-Wint. Fungi 3332 ; 
Kellerm. Ohio Fungi /05; Ellis & Ev. Fungi Columb. 203, 1304 ; Linhart, Fungi Hung. 447, 
Thiim. Fungi Austr. 723 ; Krieger, Fungi Sax. 525; Thtim. Myc. Univ. 1103. 
54. ANTRODIA Karst. Medd. Soc. Faun. Fl. Fenn. 5: 40. 1879. 
Hymenophore small, annual, epixylous, sessile or semiresupinate; surface zonate, 
encrusted, glabrous: context thin, light-brown, fibrous; tubes short, firm, thin-walled: 
spores smooth, hyaline. 
Type species, ntrodia mollis (Sommerf.) Karst. 
_ 1. Antrodia mollis (Sommerf.) Karst Medd. Soc. Faun. FI. 
Fenn. 5: 40. 1879. 
Daedalea moltis Sommerf. Suppl. Fl. Lapp. 271. 1826. 
Trametes stereoides Bres. Atti Accad. Roveret. III. 3: 92. 1897. 
Pileus sessile or semiresupinate, often broadly effused, the reflexed portion irregular, 
imbricate, conchate, often plicate, 1-2 cm. long, 2-8 cm. broad, less than 5 mm. thick ; 
surface light-brown to umbrinous or black, encrusted, conspicuously multizonate, finely 
tomentose to glabrous, eneven; margin acute, rather thick, sterile, pale-brown, finely 
tomentose: context very thin, membranous, light-brown next to the tubes, fulvous above 
with a black line between ; tubes very variable in size and shape, avellaneous within, 2-4 
mm. long, mouths Gru to sinuous, 1-3 to a mm., edges rather thick, firm, entire, Oaea 
splitting into flat teeth in old plants: spores Slongate-cllipsoid. smooth, hyaline, 9-11 < 
4-5 uw; hyphae 2 # thick. 
TYPE LOCALITY: Lapland. 
HaBitTaT: Dead deciduous wood. 
DISTRIBUTION : Temperate North America and Europe. 
ExsiccaTi: Thiim. Myc. Univ. 2004; Ellis & Ev. N. Am. Fungi 2506; Rab.-Wint. Fungi 
Eur. 3739. 
