TROPICAL POLYPORES 43 



decurrent, pallid to ochraceous, short, mouths subelliptic or 

 circular, becoming angular, 4-6 to a mm., edges entire to dentate; 

 spores smooth, hyaline; stipe central or eccentric, short, thick, 

 usually reticulate, brown to blackish, fleshy, 2 cm. long, 5-15 

 mm. thick. 



Found a few times on dead wood in Cuba. 



2. POLYPORUS SCABRICEPS Berk. & Curt. 



Pileus irregularly circular in outline, slightly convex, 3-5 X 0.3 

 cm.; surface umbrinous, minutely and evenly scabrous, appear- 

 ing spuriously porose; margin irregular, involute, 3-4 mm. of it 

 being rolled inward; context soft-corky, pale-yellowish-brown; 

 tubes decurrent, pallid, dark-yellowish-brown when dry, mouths 

 irregular, 4 to a mm., edges thin, dentate; stipe central, short, 

 even, lighter than the pileus, scabrous^ tough, 2 cm. long, 5-6 

 mm. thick. 



Found once on dead wood in Cuba. 



3. POLYPORUS VIRGATUS Berk. & Curt. 



Pileus circular, depressed at the center, 3.5-6 X 0.2-0.3 cm.; 

 surface rufous when dry, tomentose to glabrous, at length 

 virgate from the rupture of the cuticle; margin thin, acute, 

 inflexed when dry; context firm, fibrous, pale-brown, 1-2 mm. 

 thick; tubes decurrent, fragile, dark-yellowish-brown when dry, 

 1-1.5 nim. long, mouths angular, somewhat irregular, 2-3 to a 

 mm., slightly concentrically confluent, edges thin, conspicuously 

 dentate; stipe central, nearly equal, concolorous or darker at the 

 base, smooth like the pileus, firm and tough, 1.5-2.5 cm. long, 

 5-10 mm. thick. 



Found a few times on dead wood in Cuba, once in Costa Rica, 

 and once at Hogtown, Florida. 



4. POLYPORUS TUBA Berk. & Curt. 



Pileus cup-shaped, like a Peziza, with a very long stipe, and 

 very thick for its size, 1-1.5 X 0.5-1 cm.; surface white, yellow- 

 ish-brown when dry, glabrous, smooth or radiate-rugose; margin 

 abruptly acute, entire, slightly revolute when dry; context pallid, 

 firm, not elastic, 5 mm. or more thick; tubes decurrent, short, 

 yellowish, mouths small, 4 to a mm., edges thin, at length 

 elongate; stipe slender, central, dilated above, concolorous, 

 rough, striate, tough, 3-4 cm. long, 2-4 mm. thick. 



Found once on dead wood in Cuba. 



