Part 2, 1908] POLYPORACEAK 103 
Pileus very large, 15-30 cm. broad ; context marked with interlacing 
lines of a lighter color. 29. P. extensus, 
Pileus 8-12 cm. broad ; context homogeneous, 
Surface almost free from markings ; tubes 2-6 mm. long each 
season ; found on mesquite. 30. P. sublinteus. 
Surface distinctly zonate and shallowly furrowed ; tubes 5-10 
mm. long each season; found on logwood. 31. P. Haematoxyli. 
1. Pyropolyporus igniarius (1,.) Murrill, Bull. Torrey 
Club 30: 110. 1903. 
Boletus igniarius V,. Sp. Pl. 1176. 1753. 
Polyporus tgniarius Fries, Syst. Myc. 1: 375. 1821. 
Polyporus nigricans Fries, Syst. Myc. 1: 375. 1821. 
? Polyporus hyperboreus Berk. Ann. Mag. Nat. Hist. 7: 453. 1841. (Type from Arctic North 
America.) : 
? Polyporus Novae-Angliae Berk. & Curt. Grevillea 1: 51. 1872. (Type from New England.) 
Fomes igniarius Gill. Champ. Fr. 1: 687. 1878. 
Phellinus igniarius Quél. Ench. Fung. 172. 1886. 
Pileus woody, ungulate, sessile, 6-7 X 8-10 X 5-12 cm.; surface smooth, encrusted, 
opaque, velvety to glabrous, ferruginous to fuscous, becoming black and rimose with age; 
margin obtuse, sterile, ferruginous to hoary, tomentose: context woody, distinctly zonate, 
ferruginous to fulvous, 2-3 cm. thick; tubes evenly stratified, 2-4 mm. long each season, 
fulvous, whitish-stuffed in age, mouths circular, minute, 3-4 toa mm., edges obtuse, fer- 
ruginous to fulvous,. hoary when young: spores globose, smooth, hyaline, 6-7; spines 
10-25 & 5-6 #. 
TYPE LOCALITY: Sweden. a 
HaBitaT: Trunks of various diseased déciduous trees. 
DISTRIBUTION : North temperate and arctic regions of all lands. 
ILLUSTRATION: Gill. Champ. Fr. p/. 290. 
ExsiccaTi: Roum. Fungi Sel. 6268, 7388 ; Krieger, Schad]. Pilz. 20; Thiim. Fungi Austr. 1007 ; 
Thiim. Myc. Univ. 105; Eriksson, Fungi Par. Scand. 78 ; Allesch. & Schn. Fungi Bavar. #27, 423; 
Desmaz. Pl. Crypt. 2256 ; Krieger, Fungi Sax. 526 ; Sydow, Myc. Mar. 460, 1603. 
2. Pyropolyporus fulvus (Scop.) Murrill, Bull. Torrey 
Club 30: 112. 1903. 
Boletus fulvus Se68. Fl. Carn. ed. 2.2: 469. 1772. 
Fomes fulvus Gill, Champ. Fr. 1: 687. 1878. 
Pileus woody, triquetrous, rarely ungulate, thick and broadly attached behind, 
1-3 X 5-7 & 3-8 cm.; surface smooth, very slightly sulcate, velvety, ferruginous, becoming 
horny and glabrous and finally nearly black with age; margin subobtuse, ferruginous, 
velvety: context woody, fulvous, 1-2 cm. thick; tubes evenly stratified, 2-3 mm. long 
each season, fulvous, mouths circular, 3 to a mm., edges obtuse, entire, ferruginous to 
fulvous: spores globose, compressed on one side, hyaline, 5.5-6 & 4.5-5 4; spines fulvous, 
veutricose, 15-20 * 7-9; hyphae 2.5-3 4. 
TYPE LOCALITY: Carniola. 
HaBsitTaT: Diseased trunks and stumps of various species of Prunus. 
DISTRIBUTION: North America; also in vida 
ILLUSTRATION: Fries, Ic. Hymen, pl. 184, f. 3 
ExsiccaTI: Roum. Fungi Sel. 6963, 7389 ; Desmaz. Pl. Crypt. 2157 ; Kunze, Fungi Sel. 202. 
3. Pyropolyporus Everhartii (Ellis & Gall.) Murrill, Bull. Torrey 
Club 30: 114. 1903. 
Mucronoporus Everhartii Ellis & Gall. Jour. Myc. 5: 141. 1889. 
‘Pileus woody, dimidiate, ungulate, broadly attached behind, 6-10 X 6-15 x 3-8 cm.; 
surface glabrous, slightly encrusted, deeply sulcate, not polished, gray to brownish-black, 
slightly rimose in age; margin obtuse, covered with ferruginous tomentum, becoming gray 
and glabrous: context corky to woody, repeatedly zoned, fulvous in dried specimens, 
2-3 cm. thick; tubes evenly stratified, 0.5-1 cm. long each season, fulvous, mouths cir- 
