D. discolor Fr. Flat, rugose, scrupose, zoned, glabrate, whitish, within 
white, hymenium fuscous, porous, then narrowly sinuate, torn and 
toothed. 
D. corrugata Berk. Fleshy, coriaceous, zoned, corrugated lengthwise, 
glabrous, pallid; sinuses unequal, flexuous, then torn, becoming fuscous. 
Imbricated sessile. According to Fries, perhaps a form of D. discolor. 
D. albida Schw. Very flat, horizontal, zoned, very smooth, white; 
sinuses poriform and lamelliform, fuscous. Frequent on birch (says 
Schweinitz) in Carolina. Compare D. discolor and D. corrugata. 
D. zonata Schw. Imbricated, flat, fuscous, zoned, undulate ; sinuses 
mostly poriform. Forming conspicuous tufts on trunks, with pilei 
resembling oysters; near D. albida. 
B. Fellow ish, tawny, ferruginous etc. 
D. puberula B. & C. Soft, corky, irregular, even, or with a few warty 
excrescences, finely pubescent, ochraceous, somewhat decurrent; margin 
thin; pores small, at length sinuate, concolorous. 
D. aurea Fr. Gibbous, velvety, subzonate, golden-yellow, substance and 
pores yellow, hymenium porous or narrowly sinuate-labyrinthiform; 
margin swollen. 
D. ferruginea Schum. Effused, reflexed, zoned, vellow-ferruginous, 
margins and young specimens white, within flesh-color; hymenium 
porous, then narrowly sinuate, tawny. Connate-imbricate. An uncertain 
species, reported from Pennsylvania many years ago. Perhaps a form of 
D. unicolor. 
D. rhabarbarina Mont. Resupinate, long-effused, surrounding living 
branches, byssine, thick, yellow-tawnv, radiate-fringed at the border; 
pores sinuous, obtuse, date brown within. 
D. Berkeleyi Sacc. SylL Reniform, umber, zoned, sulcate, tomentose ; 
margin obtuse, golden tawny; substance rhubarb-colored; hymenium 
ochraceous yellow; pores at length sinuate; dissepiments rigid, slightly 
pulverulent. Pine logs, Florida. The tawny orange marginal zone con¬ 
trasts strongly with the dark umber pileus. 
D. fallido-fulva Berk. Pallid, somewhat shining, zoneless ; hymenium 
pale-tawny, pores mostly straight. Referred by some to Trametes trabea 
Pers., which (see Lenzites vialis Peck) this species probably is. 
D. Ravenelii Berk. Ferruginous in the younger part, with sometimes 
a faint tawny tint; small, decurrent at the base, tomentose, becoming 
dark brown ; pores irregular, at first pubescent. 
D. sulphurella Peck. Resupinate, effused or nodulose, pale sulphur 
yellow, pores short, labyrinthiform, dissepiments often lacerated, as in 
Irpex, in the dry plant; encrusting decayed wood and mosses; becoming 
pallid on drying. 
D. externa Peck. Resupinate, thick, coriaceous, often uneven or some¬ 
what nodulose, the margin at first cottony and white, soon changing to 
brown, the subiculum slightly rufescent; pores large, unequal, and laby- 
rinthiform, in vertical places oblique, whitish. In long patches on under 
side of prostrate trunks. 
D. merulioides Schw. Terrestrial,, sessile; pileus pulvinate, somewhat 
fleshy behind, substipitate, extended ; margin subundulate and as if auric- 
ulate about the pseudo-stipe, where it is white subtomentose, elsewhere 
glabrous, olivaceous cervine; hymenium of irregular pores, which are 
broad, as in Merulius, becoming yellowish, green, subangular, at first 
rather soft. 
Lenzites Fr. 
Corky, leathery, or woody, one-sided, sessile, variously attached; gills 
partaking of the same character as the pileus, firm, unequal, often anas- 
