22 NORTH AMERICAN FLORA [VoLUME 9 
17. Coriolus haedinus (Berk.) Pat. Tax. Hymén. 94. 1900. 
Polyporus haedinus Berk, Jour. Bot. & Kew Misc. 8: 234. 1856. 
Polyporus undigerus Berk. & Curt. Jour. Linn. Soc. 10: 317. 1868. (Type from Cuba.) 
Pileus very thin and very flexible, almost as thin as paper at times, dimidiate to circu- 
lar, according to its relation to the substratum, applanate or conchate, laterally connate, 
decurrent, 1-2 * 2-3 & 0.02-0.05 ecm. ; surface white to slightly yellowish, densely concen- 
trically furrowed, slightly spongy between the furrows, glabrous; margin thin, undulate 
to lobed, fertile: context white, membranous; tubes short, less than 1 mm. long, mouths 
angular, nearly regular, 4-5 to a mm., with a tendency to appear much elongated radially 
by the partial separation of the transverse walls, edges very thin, fimbriate-dentate: spores 
smooth, hyaline. 
TYPE LOCALITY: Brazil. 
HaBITaT: Dead wood. . 
DISTRIBUTION : Cuba and Porto Rico; also in Brazil. 
18. Coriolus substipitatus Murrill, sp. nov. 
Pileus flabelliform, attached by a short tubercle, applanate, rather thin, flexible, of 
very light weight, 45-7 x 0.2-0.3 cm.; surface milk-white, opaque, glabrous, somewhat 
uneven, especially behind, faintly zonate in front; margin acute, concolorous, entire to 
slightly lobed: context thin, soft, punky, milk-white, 1 mm. thick; tubes 1-1.5 mm. long, 
white within, firm and elastic, glistening, mouths circular to angular, very regular, 6-7 to 
atmm., edges thin, entire, white, becoming denticulate with age, slightly yellowish in 
dried specimens: spores globose, smooth, hyaline, 3.54; hyphae 44; cystidia none. 
Type collected at Port Antonio, Jamaica, on an old log in woods, /. S. Earle 629. 
DISTRIBUTION: Known only from the type locality. 
19. Coriolus subectypus Murrill, sp. nov. 
Pileus imbricate, sessile, flabelliform, rather thin, slightly flexible to rigid, 4-7 * 6-10 
 0.2-0.4 em.; surface smooth, glabrous, white to pallid, tinged with bay at times behind, 
indistinctly concentrically furrowed, subshining, finely multizonate; margin thin, undulate 
to lobed, sometimes inflexed when dry: context white, punky, 2-3 mm. thick; tubes about 
1 mm. long, white within, mouths glistening, circular to angular, 6 to a mm., edges very 
thin, denticulate, white, pale-ochraceous in dried specimens, rather firm when young, be- 
coming flaccid and wearing away with age: spores ovoid, smooth, hyaline, scanty, 5-6 X 
3-4 w; hyphae 3 p, cystidia none. 
Type collected in Florida, on dead wood, April, 1885, H. A. Rau. 
DISTRIBUTION: Known only from the type locality. 
20. Coriolus hondurensis Murrill, sp. nov. 
Pileus very thin, slightly flexible, conchate-reniform, sessile, 7 <9>X 0.2-0.3 cm. ; 
surface radiate-rugose, glabrous, subshining, white to pale-cinereous, with a few very nar- 
row, slightly darker, concentric lines; margin thin, white, lobed, inflexed on drying: 
context very thin, white, fibrous, less than 1 mm. thick; tubes 2-3 mm. long, slender, 
white to pale-isabelline within, mouths minute, angular, regular, glistening, 7-8 toa mm., 
edges thin, dentate, white to dark-isabelline, fulvous in dried specimens: spores smooth, 
hyaline. 
Type collected near Punta Gorda, British Honduras, on dead wood, 1906, Morton E. Peck. 
DISTRIBUTION: Known only from the type locality. 
21. Coriolus ochrotinctellus Murrill, sp. nov. 
Pileus subimbricate, dimidiate or flabelliform, applanate or conchate, sessile to sub- 
stipitate, rigid, more or less brittle, 2-6 K 3-9 X 0.2-0.5 cm.; surface glabrous, smooth, sub- 
shining, ochroleucous with ochraceous zones; margin papery-thin, fragile, often incurved, 
entire or undulate, rarely lobed: context milk-white, fleshy-tough, somewhat friable, 1-3 
min, thick; tubes 1-3 mm. long, slender, white to ochroleucous within, mouths very regu- 
lar, angular, 4-5 to amm., edges thin, entire, white to ochraceous or isabelline: spores 
globose, smooth, hyaline, 3; hyphae 5 »; cystidia none. 
Type collected at Biloxi, Mississippi, September 10, 1904, on a decayed oak, Esther S. 
Earle 55. 
DISTRIBUTION : Mississippi; Cuba. 
