Part 2, 1908] POLYPORACEAE 85 
fibers, which often more or less disappear with age; margin entire or undulate, pallid, 
acute, sterile below: context fulvous at maturity, zonate, punky to corky, 3-5 mm. thick ; 
tubes rather long, grayish-umbrinous within, equaling the thickness of the context, 
mouths small, circular to somewhat angular, 3-4 toa mm., edges thick, entire, pallid to 
umbrinous: spores oblong, smooth, hyaline, 8-10 X 3-4 z. 
TYPE LOCALITY : Jamaica. 
HawsiTaT: Various forms of dead wood. 
DISTRIBUTION : Gulf States and tropical America. 
ILLUSTRATION: Bosc, doc. cié. 
EXSICCATI: Ellis, N. Am. Fungi 505; Rav. Fungi Am. 6,; Roum. Fungi Sel. 4078. 
58. NIGROPORUS Murrill, Bull. Torrey Club 32: 361. 1905. 
Hymenium annual, epixylous, dimidiate-sessile to flabelliform, glabrous: context 
dark-brown, firm, homogeneous; tubes short, slender, thin-walled, black: spores smooth, 
hyaline. 
Type species, Polyporus vinosus Berk. 
1. Nigroporus vinosus (Berk.) Murrill, Bull. Torrey 
Club 32: 361. 1905. 
Polyporus vinosus Berk, Ann, Mag. Nat. Hist. 11.9: 195. 1852. 
Pileus thin, dimidiate to reniform, imbricate, narrowly attached by a scutate disc or 
laterally connate and broadly decurrent, 1-3 x 3-6 X 0.1-0.3 cm.; surface zonate, finely 
velvety to glabrous, obscurely vinous-brown ; margin yellowish when young, thin, undu- 
late, often inflexed on drying: context rigid, tough, honiogeneous, chestnut-colored, 1-2 
mm. thick; tubes minute, short, scarcely a mm. in length, smoky-black, mouths regular, 
angular, 7-9'to amm., edges thin, entire, vinous-brown, pruinose when young, blackish 
with age: spores allantoid, smooth, hyaline, 3-4 X1-1.54; hyphae 2.5-3.5 z. 
TYPE LOCALITY : Santo Domingo. 
HABITAT: Decaying wood. 
DISTRIBUTION : Georgia; Cuba; Santo Domingo. 
59. CYCLOPORELLUS Murrill, Bull. Torrey Club 34: 468. 1907. 
Hymenophore annual, tough, epixylous, sessile, anoderm, zonate: context thin, fibrous- 
brown; tubes short, thin-walled, mouths polygonal, becoming concentrically elongate in 
some species by the splitting of the radial walls: spores ovoid, smooth, pale-ferru- 
ginous. 
Type species, Polyporus todinus Mont. 
1. Cycloporellus iodinus (Mont.) Murrill. 
Polyporus rodinus Mont. Ann. Sci. Nat. II. 16: 108. 1841. 
Cyclomyces iodinus Duss, Enum. Champ. Guad. 33. 1903. 
Cyclomycetella pavonia Murrill, Bull. Torrey Club 31: 423, in part. 1904. 
Pileus conchate, thin, umbonate-sessile, simple or imbricate, often radially-plicate, 
2-4 X 3-5 X 0.1-0.2 cm.; surface densely concentrically zonate, velvety, tawny-chestnut ; 
margin thin, entire, ferruginous, deflexed in drying: context thin, fibrous, leathery, 
slightly flexible, fulvous; hymenium fuliginous, tubes 1 mm. or less in length, 3-7 toa 
mm., isabelline within, polygonal and regular, often becoming concentrically confluent, 
edges thin, entire, often splitting with age: spores ovoid, smooth, pale-ferruginous, 3% 54; 
cystidia dark-brown, rather scanty, averaging 5 X 204. 
TYPE LOCALITY : Guiana. 
HasitaT: Dead wood of deciduous trees. 
DISTRIBUTION: Tropical America. ; 
Exsiccatr: Ellis & Ev. N. Am. Fungi 7705. 
