Part 2, 1908] POLYPORACEAE 113 
encrusted, grayish-black with age; margin fulvous, pulverulent, undulate or lobed, sub- 
acute, deflexed, sterile on the perpendicular portion, which is from 2to3mm. long: context « 
floccose, homogeneous, ferruginous, 2-5 mm. thick, with a strong and disagreeable odor 
when fresh; tubes 2 mm. long, grayish- -umbrinous, mouths circular, whitish-pulverulent 
to eaceaeans fuliginous with age, edges thick, entire: spores globose or ovoid, smooth, 
ferruginous, 44; hyphae dark-brown, 6; cystidia ovoid, hyaline, rather abundant, 
7x4h. 
TYPE LOCALITY: Georgia. 
HABITAT: Dead trunks of oak and beech. 
DISTRIBUTION : Pennsylvania to lowa and Georgia. 
ILLUSTRATION: Ohio Myc. Bull. 9: I. 
EXSICCATI: Rav. Fungi Car. 3: 8; Ellis & Ev. N. Am. Fungi 603. 
71. ELFVINGIA Karst. Finl. Basidsv. 333. 1889. 
? Aylopilus Karst. Bidr. Finl. Nat. Folk 37: 69. 1882. 
Hymenophore large, epixylous, sessile, applanate or ungulate; surface sulcate, horny- 
encrusted: context brown, punky; tubes brown, cylindrical, stratose, thick-walled, mouths 
whitish when young: spores brown, rarely hyaline; conidia present in most species on or 
near the surface of the pileus. 
Type species, Homes applanatus (Pers.) Gill. 
Context ferruginous ; spores hyaline ; pileus usually ungulate. 
Pileus exactly ungulate ; pores 3 to amm.; found in tentperate regions south 
to North Carolina. 1. E£. fomentaria. 
Pileus compressed-ungulate ; pores 5 to a mm.; found in tropical America and 
the Gulf states. 2. £. fasciata. 
Context darker, fulvous to chocolate-brown; spores yellowish-brown; pileus 
usually applanate. 
Hymenophore annual, persisting above later growths; pileus reniform, 
margin thin ; spores dark-brown, roughly echinulate, 8-97 he 3. E. lobata. 
Hymenophore ‘truly perennial ; tubes stratified ; spores smooth or nearly so. 
Crust white, becoming brown, not separating ; spores smooth, 8-9 x Sy; 
found in temperate regions. 4. BE. megaloma. 
Crust brown; context floccose, softer ; spores smooth or slightly echinulate ; 
found in tropical America. 
Pileus thick at maturity, crust smooth and very hard ; hymenium plane ; 
margin truncate, very smooth, often laccate. 5. £. tornata. 
Pileus thin, crust radially wrinkled, thinner; hymenium concave ; 
margin undulate, never laccate. 6. E£. Lionnetit, 
1. Elfvingia fomentaria (1,.) Murrill, Bull. Torrey 
Club 30: 298. 1903. 
Boletus fomentarius L. Sp. Pl. 1176. 1753. 
Polyporus fomeniarius Fries, Syst. Myc. 1: 374. 1821. 
Polyporus fomentarius excavatus Berk. Ann. Nat. Hist. 3: 387. 1839. (Type from Isle a la 
Crosse, North America. ) 
Fomes fomentarius Gill. Champ. Fr. 1: 686. 1878. 
Pileus hard, woody, ungulate, concave below, 7-9 < 8-10 & 3-10 cm.; surface finely 
tomentose to glabrous, isabelline to avellaneonus and finally black and shining with age, 
zonate, sulcate, horny-encrusted ; margin obtuse, velvety, isabelline to fulvous: context 
punky, homogeneous, ferruginous to fulvous, conidia-bearing, 3-5 mm. thick; tubes indis- 
tinctly stratified, not separated by layers of tontext, 3-5 mm. long each season, avellaneous 
to umbrinous within, mouths circular, whitish-stuffed when young, 3-4 to a mm., edges 
obtuse, entire, grayish-white to avellaneous, turning dark when bruised: spores globose, 
smooth, very light-brown, 3-4; hyphae brown, 7-8; cystidia none. 
TYPE LOCALITY : Sweden. 
HagiratT: Abundant on trunks of birch and beech. 
DISTRIBUTION: Canada to North Carolina and west to California; also in the temperate 
regions of Europe 
Tec ueeR arions Gill. Champ. Fr. £/. 467; Sow. Engl. Fungi p/. 137. 
ExsiccaTI : Sydow, Myc. Mar. 210, 4608; Allesch. & Schn. Fungi Bavar. /#0,; Linhart, Fungi 
Hung. pet Thiim. Fungi Austr. 716 ; Eriksson, Fungi Par. Scand. 77; Krieger, "Fungi Sax. “i; 
Shear, N. Y. Fungi 35 ;- Thtim. Myc. Univ. 2109. 
