TROPICAL POLYPORES 5 



i. IRPICIPORUS LACTEUS (Fries) Murrill 



Pileus extensively effused, shortly reflexed, imbricate, dimidi- 

 ate, laterally connate, 0-1.5 X 1-4 X 0.1-0.2 cm.; surface white, 

 subzonate, concentrically furrowed in large specimens, villose; 

 margin very thin, deflexed, undulate to lobed; context mem- 

 branous, less than I mm. thick; tubes short, irregular, white to 

 isabelline, 1-3 mm. long, mouths angular, about 2 to a mm., 

 edges uneven, soon splitting into teeth, which are compressed, 

 pointed, fimbriate, dentate to incised; spores cylindric, slightly 

 curved, smooth, 6-7 X 2-3 p. 



Frequent on dead wood, especially in the mountains, in Cuba, 

 Jamaica, Porto Rico, and eastern Mexico. 



2. IRPICIPORUS CUBENSIS (Berk. & Curt.) Murrill 



Pileus reniform, sessile, 0.5-0.7 X 1.5 X 0.2 cm.; surface 

 glabrous, radiate-lineate, white to isabelline, azonate, smooth; 

 margin deflexed, cirrhose, concolorous; context white, fragile, 

 less than I mm. thick; tubes 1-1.5 nun. long, white to discolored, 

 3-4 to a mm., very soon splitting into teeth, which are com- 

 pressed, pointed and dentate. 



Found once on dead wood in Cuba and once on a dead tree 

 trunk at Cinchona, Jamaica. Specimens from Guadeloupe 

 referred to this species by Duss are considerably larger, measuring 

 2 cm. long and 3 cm. broad. 



2. CORIOLUS Quel. 



Hymenophore annual, epixylous, sessile, usually zonate, ano- 

 derm, hairy or glabrous; context thin, white, flexible, fibrous, 

 leathery; tubes thin- walled, white, at length splitting into irpici- 

 form teeth in several species, mouths polygonal or irregular; 

 spores smooth, hyaline. 



Tubes more or less entire, at least until the hymeno- 



phore is quite old. 



Surface of pileus wholly or partly glabrous when 

 mature or clothed only with inconspicuous hairs. 

 Pileus not entirely glabrous at maturity. 



Pileus marked at maturity with glabrous zones 

 of a different color from the rest of the 

 surface. 



Glabrous zones large, numerous, conspicu- 

 ously and variously colored. i. C. versicolor. 

 Glabrous zones small and comparatively 

 inconspicuous. 



