14 TROPICAL POLYPORES 



branous, pallid; tubes punctiform, white within, mouths large, 

 hexagonal, irregular, 2-3 to a mm., edges entire to lacerate- 

 dentate, the divisions distinctly spinose, white to umbrinous. 

 Found once on old timber near the beach at Havana, Cuba. 



22. CORIOLUS PINSITUS (Fries) Pat. 



Pileus thin, flexible, confluent-effused, dimidiate or flabelliform, 

 often umbonate-affixed, 2-4 X 3-7 X o.i cm.; surface isabelline 

 to pale-cinereous, glistening, multizonate, velvety-hirsute; mar- 

 gin thin, undulate to lobed, sterile, inflexed on drying; context 

 white, membranous; tubes short, white to discolored within, 

 less than I mm. long, mouths hexagonal, very regular, 2-3 to a 

 mm., edges thin, denticulate, white to discolored, often becoming 

 fuliginous ; spores oblong, 6-7 X 3 /*. 



Extremely common on dead wood throughout. The variation 

 in the color of the tubes may be very confusing unless one happens 

 to find white and blackish tubes on the same hymenophore. 

 It was first described from Jamaica as Boletus villosus Sw.; not 

 B. villosus Huds. 



23. CORIOLUS SERICEOHIRSUTUS (Klotzsch) Murrill 



Pileus very thin, flexible, erf used-confluent, sometimes wholly 

 resupinate, conchate-reflexed, 0-3 X 2-6 X 0.05-0.1 cm.; surface 

 conspicuously silky-villose to strigose-hirsute, multizonate, pale- 

 brown to hoary, with slightly darker zones; margin thin, entire 

 or undulate, dentate or eroded with age; context thin, white, 

 membranous; tubes shallow, 1-1.5 mm. deep, white to slightly 

 discolored within, mouths hexagonal, irregular, very variable 

 in size, 0.3-1 mm. in diameter, edges thin, denticulate to dentate, 

 white to discolored, sometimes becoming umbrinous; spores 

 6X4M. 



Common on dead trunks and branches of red cedar in southern 

 Florida and the Bermudas, and occasional in the Bahamas and 

 Cuba. 



24. CORIOLUS SCUTATUS Murrill 



Pileus scutate-conchate, fixed at the center, thin, slightly 

 flexible, coriaceous, 5-7 cm. broad, 1-2 mm. thick; surface villose- 

 tomentose, isabelline to dark-purple or black, marked with a 

 few narrow, concentric lines; margin thin, sterile, pallid, entire or 

 undulate, inflexed when dry; context thin, soft-fibrous, less than 

 I mm. thick; tubes short, white, less than i mm. long, mouths 



