12 TROPICAL POLYPORES 



edges thin, dentate, white to dark-isabelline, fulvous in dried 

 specimens. 



Found once on dead wood near Punta Gorda, British Honduras. 



15. CORIOLUS PERTENUIS Murrill 



Pileus very thin, coriaceous, flexible, dimidiate, nearly plane, 

 sessile by a narrow base, 2.5 X 3 X 0.1-0.2 cm.; surface slightly 

 concentrically furrowed, glabrous, stramineous; margin thin, 

 entire, sterile, cremeous; context white, fibrous, membranous; 

 hymenium ochraceous when viewed at an angle, nearly fulvous 

 when looked at perpendicularly; tubes punctiform, less than I 

 mm. long, mouths very regular, angular, about 5 to a mm., edges 

 thin, entire. 



Collected once at Chester Vale, Jamaica, on dead wood. 



1 6. CORIOLUS OCHROTINCTELLUS Murrill 



Pileus subimbricate, dimidiate or flabelliform, applanate or 

 conchate, sessile to substipitate, rigid, more or less brittle, 

 2-6 X 3-9 X 0.2-0.5 cm.; surface glabrous, smooth, subshining, 

 ochroleucous with ochraceous zones; margin papery-thin, fragile, 

 often incurved, entire or undulate, rarely lobed; context milk- 

 white, fleshy- tough, somewhat friable, 1-3 mm. thick; tubes 

 1-3 mm. long, slender, white to ochroleucous within, mouths 

 very regular, angular, 4-5 to a mm., edges thin, entire, white 

 to ochraceous or isabelline ; spores globose, 3 /*. 



Occasional on dead wood in southern Florida, Cuba, and 

 Porto Rico. 



17. CORIOLUS HOLLICKII Murrill 



Pileus imbricate, substipitate, attached by a short, scutellate 

 disk or tubercle, flabelliform, flexible to nearly rigid, rather thick 

 for the genus, 4-6 X 5-7 X 0.5 cm. ; surface slightly radiate- 

 rugose, multizonate, shallowly concentrically sulcate, opaque, 

 glabrous, ochroleucous or ochraceous to pallid with pale-avel- 

 laneous zones; margin subacute, entire, fertile, concolorous; 

 context milk-white, soft-corky, homogeneous, about 2 mm. thick; 

 tubes stramineous within and without, becoming isabelline on 

 drying, 2-3 mm. long, corky, rigid, mouths regular, nearly cir- 

 cular, glistening, 4-5 to a mm., edges thin, entire. 



Collected once at Union Hill, near Moneague, Jamaica, on a 

 log in the woods; once in Porto Rico; and four times at Jalapa, 

 Mexico. 



