TROPICAL POLYPORES 27 



4. BjERKANDERA SUBSIMULANS Murrill 



Pileus explanate, fleshy-tough, sessile, dimidiate or fan-shaped* 

 often attached by a narrow base, 5-10 X 10-15 X 0.3-0.7 cm.; 

 surface smooth, partly glabrous and partly clothed with scanty, 

 flexible hairs; margin thin, acute, broadly sterile, lobed, with a 

 zone of appressed hairs and blackish as though scorched for 

 5-10 mm.; context fibrous, hard and corky when dry, white to 

 isabelline; tubes 2-5 mm. long, white to fuliginous, mouths 

 angular, irregular, 1-3 to a mm., edges thin. 



Found once on dead trunks in Cuba. 



9. TRAMETES Fries 



Hymenophore annual, epixylous, sessile; surface anoderm, 

 white, azonate; context white, homogeneous, coriaceous to soft- 

 corky; hymenium concolorous, rigid; tubes thin-walled, mouths 

 circular to irregular; spores smooth, hyaline. 



Context punky, soft. 



Surface entirely white, sometimes discolored with age; 



pileus less than 5 cm. broad. 



Pileus snow-white, dimidiate. i. T. nivosa. 



Pileus whitish, opaque, effused-reflexed. 2. T. jamaicensis. 



Surface partly brown or red, especially behind; pileus 



10-20 cm. broad. 3. T. cubensis. 



Context corky, rather firm. 



Pileus effused-reflexed; surface more or less murinous. 4. T. submurina. 

 Pileus normally expanded; surface not murinous. 

 Surface white or yellowish. 



Context about 5 mm. thick. 5. T. havannensis. 



Context 2-3 cm. thick. 6. T. lignea. 



Surface fulvous tinged with chestnut. 7. T. rutilantiformis . 



Surface avellaneous to blackish-avellaneous. 8. T. jalapensis. 



Pileus vertically attached, i cm. broad. 9. T. subscutellattis. 



i. TRAMETES NIVOSA (Berk.) Murrill 



Pileus dimidiate, conchate or applanate, 2-3 X 3-5 X i cm.; 

 surface smooth, azonate, glabrous, snow-white, pale-isabelline in 

 dried specimens; margin thin, concolorous, entire; context soft, 

 punky-corky, white, 5 mm. thick; tubes 2-4 mm. long, slender, 

 white to pallid within, mouths circular, 5 to a mm., edges thin, 

 firm, entire, glistening, white to slightly discolored. 



Frequent on dead wood in the West Indies, as well as in South 

 America. 



