86 NORTH AMERICAN FLORA [VoLUME 9 
60. INONOTUS Karst. Medd. Soc. Faun. Fl. Fenn. 5: 39. 1879. 
Inoderma Karst. Medd. Soc. Faun. Fl. Fenn. 5: 39, 1879. Not Jnoderma S. F. Gray 1821. 
Lnodermus Quél. Ench. Fung. 173. 1886. 
Phacoporus Schrét. Krypt. Fl. Schles. 3: 489. 1888. 
Hymenophore annual, epixylous, sessile, dimidiate, simple or somewhat imbricate, 
variable in size; surface usually anoderm, brown, hairy or glabrous: context brown, thin 
and fibrous to spongy or corky; hymenium concolorons, usually covered with whitish 
powder in youth, tubes small, thin-walled: spores smooth, light- to dark-brown. 
Type species, Zronotus cuticularis (Bull.) Karst. 
Sporophore large, 10-30 cm. or more broad. 
Surface conspicuously hirsute. 
Surface glabrous. 
Spores pale-brown. 2. i. dryadeus. 
Spores deep-brown. 3. L. dryophilus. 
Sporophore minute, only a few millimeters broad, erumpent from Jenticels. 4. 7. puszllus. 
Sporophore of medium size, about 5-10 cm. broad. 
Surface conspicuously hairy. : 
Pileus very thin, 1-2 mm. 5. L. pertenuts. 
Pileus quite thick, 7-20 mm. 6. L. fulvomelieus. 
Surface not conspicuously hairy. 
Spores deep-brown in color. 
1. I. hirsulus. 
Context multizonate and iridescent. 7. I. texanus. 
Context neither zonate nor iridescent. 
Hymenium fuliginous or black. 8. Lpguniperinus, 
Hymenium fulvous. 
Surface glabrous ; tubes 1 cm. long. 9. I. jamaicensis. 
Surface tomentose ; tubes 5 mm. long. 10. I. perplexus. 
Spores faintly tinted with brown. 
Pores invisible to the unaided eye. 
Pileus thick, azonate, margin obtuse ; hymenium duil, 11. Z. corrosus. 
Pileus thin, zonate, margin very sharp ; hymenium glistening. 12. J. Wilsonti. 
Pores visible to the unaided eye, although sometimes small. 
Surface soft and spongy; sporopbores found on living shrubs, 
often encircling the twigs. 
Hymenium very concave, margin sharp and depressed. 13. Z. amplectens. 
Hymenium plane or nearly so, margin’rather blunt and not 
depressed. 14. L. fruticum. 
Surface hard and firm ; sporophores found on decaying trunks or 
roots. 15. /. radiatus. 
1. Inonotus hirsutus (Scop.) Murrill, Bull. Torrey Club 31: 594. 1904. 
Boletus hirsutus Scop. Fl. Carn. ed. 2.2: 468. 1772. 
Boletus spongiosus Lightf. Fl. Scot. 1033. 1777. 
Boletus hispidus Bull. Herb. Fr. pi. 210. 1784. pi. 423. 1791. (Type from France.) 
Boletus flavus Pollini, Fl. Ver. 3: 607. 1824. (Type from Italy.) 
Polyporus hispidus Fries, Syst. Myc. 1: 362. 1821. 
Polyporus endocrocinus Berk. Lond. Jour. Bot. 6: 320. 1847. (Type from Ohio.) 
Inonotus hispidus Karst. Medd. Soc. Faun. Fl. Fenn. 5: 39. 1879. 
Inodermus hispidus Quél. Ench. Fung. 172. 1886. 
Pileus thick, compact, fleshy to spongy, dimidiate, sometimes imbricate; compressed- 
ungulate, 7-10 10-15 3-5 cm.; surface hirsute, ferruginous to fulvous, azonate, smooth ; 
margin.obtuse, velvety: context spongy-corky, somewhat fragile when dry, ferruginous to 
fulvous, blackening with agé, 1-1.5 cm. thick ; tubes slender, about 1 cm. long, ferruginous 
within, mouths angular, 2-3 toa mm., ferruginous to bay, blackening with age, edges thin, 
very fragile, lacerate: spores broadly ovoid, smooth, thick-walled, deep-ferruginons, 2-gut- 
tulate, 5-6 7-8. . 
TYPE LOCALITY: Carniola. 
HaBiITaT: Living trunks of various deciduous trees. 
DISTRIBUTION: Northern United States ; also in Europe. 
ILLUSTRATIONS: Bull. Herb. Fr. doc. cit. ; Eas Engl. Fungi, pl. 345. 
ExsiccaTr: Roum. Fungi Sel. 2301, 6674, 7345; Krieger, Fungi Sax. 719 ; Thiim. i 
914, 1502, Allesch. & Schn. Fungi Bavar. 525. ee is eS 
2. Inonotus dryadeus (Fries) Murrill. 
Polyporus dryadeus Fries, Syst. Myc. 1: 374. 1821. 
Sporophore of immense size, sessile, dimidiate, rarely circular, usually imbricate 
applanate or depressed above, convex below, fleshy to spongy-corky, rather fragile when 
