TROPICAL POLYPORES 



tomentose, zonate, radiate-lineate, brown, tinged with wine- 

 color, becoming very blackish and opaque in type specimens; 

 margin extremely thin, even or undulate; context tough, fibrous, 

 very thin, discolored in type specimens; tubes extremely short, 

 angular, 8 to a mm., edges thin, entire, white to discolored, nearly 

 black in type specimens; stipe laterally attached, compressed, 

 sometimes wanting, rarely over 2 cm. in length or 5 mm. in 

 breadth, expanding into the pileus, which it resembles in surface 

 and substance. 



Occasional on dead wood in Cuba; also reported from Guiana. 



15. POLYPORUS (Micheli) Paulet 



Hymenophore annual, epixylous, small and simple, very rarely 

 large and compound; stipe central, eccentric or lateral, much 

 reduced at times in a few species, often partly or wholly brown 

 or black; surface usually smooth, the margin at times ciliate; 

 context white or yellowish, fibrous, tough to corky; hymenium 

 porose, at times alveolate; spores smooth, hyaline. 



Stipe pallid or light-brown, centrally attached, not darker 



than the pileus. 

 Margin of pileus devoid of cilia. 



Pileus beset, especially near the margin, with hydnoid 



processes. i. P. hydniceps. 



Pileus plainly villose, tomentose or scabrous, often 



becoming glabrous with age. 

 Pileus scabrous, irregular, umbrinous, margin 

 involute; stipe scabrous; tubes small, 4 to a 

 mm., dissepiments dentate. 2. P. scabriceps. 



Pileus villose or tomentose, becoming virgate 



from the rupture of the cuticle. 3. P. virgatus. 



Pileus minutely tomentose or glabrous from the first. 

 Hymenophore goblet-shaped; pileus less than 3 

 cm. broad, shallowly depressed at the center; 

 stipe long, striate, expanding into the pileus. 4. P. Tuba. 

 Hymenophore trumpet-shaped; pileus 5-10 cm. 

 broad, deeply infundibuliform; stipe 3 cm. 



long, pallid, puberulent. 5. P. cyathiformis. 



Hymenophore not as above. 



Pileus minute, 2 mm. in diameter, umbilicate, 



margin involute; pores alveolar. 6. P. Acicula. 



Pileus large, 10 cm. or more in diameter. 7. P. discoideus. 



Pileus of medium size, 2-3 cm. in diameter. 8. P. obolus. 

 Margin of pileus ornamented with cilia, which often 



disappear with age. 

 Tubes alveolar. 



Margin of pileus finely hispid, broadly sterile 



below. p. P. aemulans. 



