Par? 2, 1908] POLYPORACEAE 95 
woody, rarely punky; tubes cylindrical, usually thick-walled, stratose: spores smooth, 
hyaline or subhyaline. : 
Type species, Polyporus marginatus Fries. 
Context flesh-colored ; light-brown in faded specimens. 
Tubes 1-2 mm. long each season ; spores ellipsoid. 1. &. roseus, 
Tubes 3-5 mm. long each season ; spores globose. 
Species confined to tropical regions. 
Species confined to temperate regions. 
Context white or nearly so. 
Pileus less than 3 cm. broad. 
Pileus ungulate, becoming black only at the base, zonate and concen- 
trically sulcate in age ; tubes over 2 mm. Jong. 
Pileus scutellate, uniformly black even when young ; tubes less than 2 
mm. long, context thinner than tube-layer. 
Pileus more than 3 cm. broad. 
Pileus encrusted, surface darker than the context. 
Surface pure-black or nearly so at maturity, with no trace of red; 
species tropical. 
Context punky ; crust thin and fading with age. 
Context woody ; crust thick, horny and shining with age. 
Surface gray, brown or reddish, rarely becoming black with age; 
species found in temperate regions. 
Pileus thin, distinctly zonate, irregular or applanate; crust 
brown to black. 8. F. annosus. 
Pileus thick, sulcate, ungulate, rarely applanate. 
Surface soon becoming rimose, deeply sulcate ; older pores 
visible in the upper projecting annual layers ; pileus exactly 
ungulate ; found only on Shepherdia. 9. F. Ellisianus. 
Surface not as above. 
Mouths of tubes 4-5 to a mm.; surface often resinous, bay 
or black in color; abundant on conifers. 10. F. ungulatus. 
Mouths of tubes 2-3 toamm.; surface gray to black, never 
resinous nor reddish ; found only on ash anda few other 
deciduous trees. ll. &. fraxinophilus. 
Pileus rarely encrusted, surface concolorous with the context. 
Pileus chalk-white or slightly yellowish throughout, cylindrical, 
context friable, bitter; growing on conifers. 12. #. Laricts. 
Pileus not as above. 
Pores large, 2 to a mm., becoming reddish when bruised, 
annual strata separated by thick layers of context; tropical. 13. F. rubrilinctus,: 
Pores small, 5-7 to a mm., not changing to reddish when 
F. Sagraeanus, 
iF. fraxineus. 
wh 
> 
. £, ohiensis, 
om 
F. scuiellatus. 
f, subferreus. 
. £&. ligneus. 
NO 
bruised. 
Tubes white, concolorous, the mouths glistening. 14. F. populinus. 
Tubes smoky at maturity, darker than the context, not over 3 
mun. long. 15. F. Meliae. 
g : 
Tubes light-brown, strongly contrasted with the white or yel-* 
lowish context, and a cm. or more in length. 
Surface zonate. | 16. F. Auberianus. 
Surface azonate. 17. F. geotropus. 
1. Fomes roseus (Alb. & Schw.) Cooke, Grevillea 14: 21. 1885. 
Boletus roseus Alb. & Schw. Consp. Fung. 251. 1805. 
Polyporus voseus Fries, Syst. Myc. 1: 372. 1821. 
Polyporus carneus Nees, Nova Acta Acad. Leop.-Carol.13: p/. 3. 1827. 
Polyporus rufo-pallidus Trog, Flora 15: 556. 1832. 
Fomitopsis rosea Karst. Rev. Myc. 3%: 18. 1881. 
Fontes carneus Cooke, Grevillea 14: 21. 1885. 
Pileus woody, dimidiate, varying from conchate to ungulate, often imbricate and longi- 
tudinally effused, 2-4 <x 6-8X0.5-3 cm.; surface rugose, subfasciate, slightly sulcate, 
rosy or flesh-colored, becoming gray or black with age; margin acute, becoming obtuse, 
sterile, pallid, often undulate: context floccose-fibrose to corky, rose-colored, 0.2-2 
cm. thick; tubes indistinctly stratose, 1-2 mm. long each season, mouths circular, 3-4 
to a mm., edges obtuse, concolorous: spores ellipsoid, smooth, thick-walled, subhyaline, 
3.5 X 6 #. 
TYPE LOCALITY: Germany. 
HasivtaT: Dead trunks; especially those of coniferous trees. 
DISTRIBUTION : North America; also in Europe. 
ILLUSTRATIONS: Nees, doc. cit.; Fries, Ic. Hymen. pé. 186, f. 1. 
ExsiccaTl: Ellis, N. Am. Fungi 9/6; Rav. Fungi Car. 14; Thiim. Myc. Univ, 1904; Griff. 
West Am. Fungi 257. 
