112 NORTH AMERICAN FLORA [VorumEz 9 
tomentose, tawny-brown, becoming rimose and almost black with age ; margin rounded or 
acute, tomentose, ferruginous to tawny-cinnamion, entire, sterile in large specimens: context 
soft-corky to indurate, homogeneous, ferruginous, 5-10 mm. thick, thinner in small speci- 
mens; tubes stratified, white to avellaneous within, becoming ferruginous at maturity and 
in the older layers, 5 mm. long each season, much shorter in thin specimens, mouths 
irregular, circular or daedaleoid, often radially elongate, averaging 1 toamm., edges fer- 
ruginous to grayish-umbrinous, glistening when young, rather thin, entire; spores sub- 
globose, smooth, hyaline at maturity, becoming brownish with age, 5-6 xX 3-4; spines 
abundant, short, 25-35 & 4-64. 
TYPE LOCALITY: France. 
Hapitat: Trunks of living conifers. 
DISTRIBUTION : Temperate regions. ; 
ILLUSTRATIONS: Bull. U. S. Dep. Agr. Veg. Phys. 25: pl. 12, E. & P. Nat. Pfl. Lite sf 9. 
Exsiccatr: Ellis & Ev. N. Am. Fungi 2507, 2730; Romell, Fungi Scand. 7; Zopf & Sydow, 
Myc. Mar. 3; Ellis, N. Am. Fungi 602; Rab.-Wint. Fungi Eur. 3238; Karst. Finl. Fungi 7; Ellis 
& Ey. Fungi Columb. 205; Linhart, Fungi Hung. #48; Krieger, Schadl. Pilz. 78. 
69. NIGROFOMES Murrill, Bull. Torrey Club 31: 425. 1904. 
Hymenophore large, perennial, epixylous, sessile: context woody, purple; tubes 
cylindrical, stratose, thick-walled, black : spores ovoid, smooth, hyaline. 
Type species, Polyporus melanoporus Mont. 
1. Nigrofomes melanoporus (Mont.) Murrill, Bull. Torrey 
Club 31: 425. 1904. 
Polyporus melanoporus Mont. Pl. Cell. Cuba 422. 1842. 
Fomes melanoporoides Cesati, Myc. Borneo 5. 1879. (Type from Borneo.) 
Fomes Cornu-bovis Cooke, Grevillea 13: 2. 1884. (Type from Malaya.) 
Pileus very hard, ligneous, heavy, conchate to applanate, sessile, dimidiate, decurrent, 
6-10 K 10-15 % 1-2 cm. surface tomentose, nearly smooth, fuliginous to black, becoming 
glabrous, shining, several times sulcate and often rough and tuberculose with age; margin 
usually deflexed at least when dry, sterile, rounded, rarely acute, finely tomentose, cas- 
taneous-umbrinous, becoming bay when bruised: context hard, fibrous, zonate, lustrous, 
dark reddish-violet to chestnut-colored, 5 mm. thick, much thinnerin old specimens; tubes 
distinctly stratified, 3-4 mm. long each season, blackish to black the first year, avellaneous 
in the older layers, mouths circular, minute, 5-6 to a mm., edges thitk, entire, umbrinous, 
becoming angular, thin and dark smoky-black with age: spores ovoid, smooth, hyaline. 
TYPE LOCALITY: Cuba. 
HasiTaT: Trunks of trees. 
DISTRIBUTION: Southern Florida; Nicaragua; Cuba; Jamaica; also in tropical Asia. 
70. GLOBIFOMES Murrill, Bull. Torrey Club 31: 424. 1904. 
Hymenophore large, woody, encrusted, perennial, epixylous, compound : context fer- 
ruginous, punky ; tubes cylindrical, thick-walled, stratose : spores ovoid, smooth, ferruginous. 
Type species, Boletus graveolens Schw. 
1. Globifomes graveolens (Schw.) Murrill, Bull. Torrey 
Club 31: 424. 1904. 
Boletus graveolens Schw. Schr. Nat. Ges. Leipzig 1: 97. 1822. 
Polyporus conglobatus Berk. Lond. Jour. Bot. 4: 303. 1845. (Type from Ohio.) 
Fomes graveolens Cooke, Grevillea 13: 118. 1884, 
Hymenophore polycephalous, globose, having the appearance of being thatched, 8-15 
em. in diameter, the center homogeneous, ferruginous, floccose and rigid: pilei very 
numerous, cespitose-branched, closely imbricate, occupying the periphery of the mass. 
Pileus corky, rigid, conchate, usually plicate, 1-3 x 0.5-0.8 cm.; surface radiately sulcate, 
slightly zonate, purplish-fuscous, pulverulent to glabrous, slightly resinous in appearance, 
