TROPICAL POLYPORES 



Tubes normally poroid, sometimes irpiciform from 



the rupture of the dissepiments at maturity. 

 Pileus very soft, spongy, and elastic throughout. 



Hymenophore small; tubes large, not fragile. 4. SPONGIPORUS. 

 Hymenophore of immense size; tubes small, 



fragile when dry. 5. TOMOPHAGUS. 



Pileus more or less firm, flexible or rigid. 



Context duplex, spongy above, firm below; 



surface sodden and bibulous. 7. SPONGIPELLIS. 



Context not duplex as above. 



Pileus fleshy- tough to woody and rigid. 

 Surface anoderm, rarely zonate. 



Hymenium more or less smoke- 

 colored at maturity. 8. BJERKANDERA. 

 Hymenium white or pallid. 



Context fleshy to fleshy-tough, 



friable when dry. 6. TYROMYCES. 



Context punky to corky, not 



friable when dry. 9. TRAMETES. 



Surface pelliculose, often zonate. 

 Plants large, more than 5 cm. in 

 diameter; hymenium flesh- 

 colored. 10. EARLIELLA. 

 Plants small, 5 cm. or less in diam- 

 eter; hymenium white or pallid. II. RlGIDOPORUS. 

 Pileus thin, leathery, and more or less 



flexible; surface usually zonate. 

 Hymenophore normally pileate; tubes 



small and nearly always regular. 2. CORIOLUS. 



Hymenophore semiresupinate; tubes 



large and irregular. 3. CORIOLELLUS. 



Hymenophore stipitate. 



Stipe compound. 1 7. GRIFOLA. 



Stipe simple. 



Tubes large, hexagonal and radially elongate 



from the first. 13. HEXAGONA. 



Tubes not as above. 



Pileus inverted, erumpent from lenticels. 12. PORODISCULUS. 



Pileus erect or lateral, not erumpent. 



Context duplex, spongy above, woody 



below. 16. ABORTIPORUS. 



Context homogeneous, firm. 



Surface zonate. 14. MICROPORELLUS. 



Surface azonate. 15. POLYPORUS. 



Context bright-colored, yellow or red. 

 Hymenophore sessile or subsessile. 



Tubes red. 18. PYCNOPORUS. 



Tubes yellow. 



Context thin; plants small. 19. FLAVIPORELLUS. 



