TROPICAL POLYPORES 



Surface ochroleucous or ochra- 

 ceous with pale-avellane- 

 ous zones. 

 Surface isabelline-fulvous; 



tubes becoming fulvous. 

 Margin of pileus very thin, becoming 



fimbriate or lacerate at maturity. 

 Surface of pileus clothed entirely with a conspicuous 



hairy covering. 

 Pileus 5 mm. or more thick; surface roughly 



hirsute. 

 Pileus much thinner. 



Hymenium becoming wholly or partly fuscous; 



tubes broad and very shallow. 

 Surface latericeous-fulvous, except near the 



margin. 



Surface white to cinereous or isabelline. 

 Tubes regular in shape and size. 

 Tubes irregular both in size and shape. 

 Hymenium not becoming fuscous. 



Surface more or less purple, marked with a 



few concentric lines. 

 Surface white to yellowish or grayish. 

 Pileus effused-reflexed, projecting 37 



mm. 



Pileus dimidiate, projecting 2-5 cm. 

 Tubes small, 4-6 to a mm. 

 Tubes large, 1-2 to a mm. 



Tubes soon breaking up into long, irpiciform teeth. 

 Plants large, 10-20 cm. wide and 5-10 mm. thick. 

 Plants much smaller and always very thin. 

 Pileus i cm. or less broad. 

 Pileus flabelliform, glabrous. 

 Pileus subcampanulate, pendulous, erumpent, 



finely tomentose. 

 Pileus more than i cm. broad. 



Surface white, minutely fibrose-lacerate. 

 Surface ashy-white, villose. 

 Surface wood-colored, tomentose. 



17. C. Hollickii. 



1 8. C. leiodermus. 



19. C. membranaceus. 



20. C. nigromarginatus. 



21. C. fulvo-umbrinus. 



22. C. pinsitus. 



23. C. sericeohirsutus. 



24. C. scutatus. 



25. C. effusus. 



26. C. pavonius. 

 21. C. orizabensis. 



28. C. maximus. 



29. C. sobrius. 



30. C. cyphelloides. 



31. C. irpiciformis. 



32. C. abietinus. 



33. C. prolificans. 



I. CORIOLUS VERSICOLOR (L.) Quel. 



Pileus densely imbricate, very thin, dimidiate, conchate, 

 2-4 X 3-7 X 0.1-0.2 cm.; surface smooth, velvety, shining, 

 marked with conspicuous, glabrous zones of various colors, 

 mostly latericeous, bay, or black; margin thin, sterile, entire; 

 context thin, membranous; tubes punctiform, less than i mm. 

 long, white to isabelline within, mouths circular to angular, 

 regular, even, 4-5 to a mm., edges thick and entire, becoming 



