54 TROPICAL POLYPORES 



1. CERRENELLA RAVENELII (Berk.) Murrill 



Pileus thin, coriaceous, flexible, effused-reflexed, the reflexed 

 portion dimidiate, imbricate, connate, o-i X 1-3 X o.i cm.; 

 surface tomentose to finely hirsute, finely concentrically striate, 

 fulvous-chestnut to avellaneous; margin very thin, undulate to 

 lobed, deflexed in dried specimens; context papery thin, con- 

 colorous; tubes short, irregular, less than I mm. in length, 1-2 

 to a mm., teeth ferruginous, compressed, obtuse, somewhat 

 seriate, irregular in size and shape, pulverulent at first; spores 

 globose, smooth, hyaline, 6-7 p. 



Occasional in southern Florida on decaying branches of oak 

 and other deciduous trees. 



2. CERRENELLA FARINACEA (Fries) Murrill 



Pileus very thin, soft, flexible, coriaceous, entirely resupinate 

 or effused-reflexed, the reflexed portion dimidiate, imbricate, 

 laterally connate, o-i X 1-5 X o.i cm.; surface finely con- 

 centrically striate, tomentose, umbrinous-chestnut ; margin very 

 thin, undulate to lobed, sterile; context membranous, concolor- 

 ous, papery-thin; tubes short, I mm. or less, irregular, 2-3 to a 

 mm., edges thin, fimbriate to lacerate, dentate, separated at a 

 very young stage forming an irpiciform hymenium, yellowish- 

 green to olive and finally cinereous and farinaceous; spores 

 6-7 X 2.5 M . 



Frequent throughout on decaying branches of hardwood trees. 



3. CERRENELLA SUBCORIACEA Murrill 



Pileus coriaceous, rather flexible, effused-reflexed, the reflexed 

 portion dimidiate, imbricate, often laterally connate, 1-2 X 2-5 

 X 0.3-0.7 cm.; surface somewhat zonate, finely tomentose to 

 glabrous, dark-chestnut-colored; margin entire to lobed, bay, 

 tomentose, very thin; context very thin, less than I mm., 

 chestnut-colored, soft, fibrous; tubes often reviving, 2-4 cm. 

 long, umbrinous-chestnut and powdery within, hymenium ir- 

 regular, daedaleoid to iripiciform, mouths 1-2 to a mm., edges 

 thin, firm, glistening, chestnut-colored to very dark fuliginous, 

 soon splitting into flat, more or less pointed teeth. 



Found once on dead wood in Nicaragua. 



23. CORIOLOPSIS Murrill 



Hymenophore thin, flexible or rigid, annual, epixylous, sessile, 

 dimidiate, often largely resupinate; surface light-brown to bay- 



