TROPICAL POLYPORES 63 



lose, zonate or azonate, usually brown and glabrous; context 

 brown, leathery or corky, tough or rarely friable when dry; 

 hymenium usually differently colored, tubes small, thin-walled; 

 spores small, usually ovoid, hyaline. 



Context rigid; pileus azonate or with few and indefinite markings, i. H. gilvus. 

 Context flexible when hymenophore is expanded ; pileus plainly 



and definitely multizonate. 2. H. licnoides. 



i. HAPALOPILUS GILVUS (Schw.) Murrill 



Pileus corky, dimidiate, imbricate, applanate or conchate, 

 3-6 X 5-10 X 0.5-1.5 cm.; surface finely tomentose to glabrous, 

 azonate, isabelline to fulvous, often marked with indistinct 

 purplish -fuscous bands, rugulose to uneven; margin thin, fer- 

 ruginous, entire to undulate, abruptly sterile; context ferruginous, 

 fibrous-spongy to corky, zonate, 3-7 mm. thick; tubes short, 

 slender, avellaneous to grayish-umbrinous within, 3-5 mm. long, 

 often found stratified, especially in the tropics, mouths small, 

 regular, circular to angular, 6-8 to a mm., edges at first thick, 

 pale-ferruginous, becoming thin, entire, glistening, olivaceous- 

 fuscous to purplish -f uscous ; spores elongate-ellipsoid, 4-6 

 X 2-4/4; cystidia chestnut-colored, ovate-subulate, 15-20 X 

 4-5 M- 



Very common throughout on dead wood of broad-leaved trees. 



2. HAPALOPILUS LICNOIDES (Mont.) Murrill 



Pileus thin, coriaceous, flexible, imbricate, dimidiate, often 

 narrowly attached, applanate or conchate, 3-6 X 4-8 X 0.2-0.5 

 cm. ; surface multizonate, concentrically striate, finely tomentose 

 to partially glabrous, rather smooth, subshining, fulvous with 

 bay zones; margin very thin, entire, ferruginous; context thin, 

 ferruginous to fulvous, fibrous-spongy, I mm. thick; tubes 

 short, 1-2 mm., fulvous, glaucous near the mouths, which are 

 very minute, regular, circular, 7-9 to a mm., edges thick, entire, 

 pale-ferruginous to purplish-ferruginous; spores ellipsoid or 

 subglobose, 3-4X2-3/1; cystidia subulate, chestnut-colored, 

 15-25 X 6 /*. 



Very common throughout on various kinds of dead wood. 



27. FAVOLUS Beauv. 



Hymenophore small, annual, epixylous, sessile, dimidiate or 

 reniform; surface multizonate, margin thin; context thin, 

 leathery, isabelline or fulvous; tubes alveolar; spores smooth, 

 hyaline. 



