1 6 TROPICAL POLYPORES 



28. CORIOLUS MAXIMUS (Mont.) Murrill 



Pileus very large, flexible or rigid, leathery, dimidiate, im- 

 bricate, 5-12 X 10-20 X 0.2-0.5 cm.; surface conspicuously 

 villose-tomentose to partially glabrous, concentrically furrowed, 

 white or cremeous, becoming hoary; margin thin, entire to 

 lobed; context soft and spongy above, tough and fibrous below, 

 white, 1-3 mm. thick; tubes 1-2 mm. long, white to cremeous 

 within, soon becoming irpiciform, mouths circular when very 

 young, 3-4 to a mm., edges white to ochraceous, firm, fimbriate- 

 dentate, soon splitting into sharp teeth. 



Very common and conspicuous on dead trunks throughout 

 the region. 



29. CORIOLUS SOBRIUS (Berk. & Curt.) Murrill 



Pileus very thin, small, flabelliform, imbricate, 1.5 X i X o.i 

 cm.; surface very smooth, glabrous, subzonate, isabelline to 

 pale-chestnut, variegated, margin very thin, entire; context 

 membranous, white, less than 0.5 mm. thick; tubes nearly I 

 mm. in length, shorter near the margin, soon becoming irpici- 

 form, mouths rather large for the size of the pileus, irregular, 

 radially elongate, angular, 2-4 to a mm., edges white to dis- 

 colored, entire to lacerate. 



Found once on dead wood in Cuba. 



30. CORIOLUS CYPHELLOIDES (Fries) Murrill 



Pileus minute, erumpent through the cortex, thin, coriaceous, 

 pendulous, subcampanulate to unguliform, attenuate behind, 

 O.6 X I X 0.2-0.3 cm.; surface finely tomentose to nearly 

 glabrous, silky-shining, finely zonate near the margin, which is 

 thin, fertile, concolorous; context white, fibrous, less than 0.5 

 mm. thick; tubes rather long, 1.5-2 mm., white within, large 

 and irregular, soon becoming irpiciform, mouths 2-3 to a mm., 

 edges white or pallid, thin, dentate to lacerate. 



Found once on dead wood in Mexico. 



31. CORIOLUS IRPICIFORMIS Murrill 



Pileus white throughout or slightly greenish behind, probably 

 owing to algae, gregarious, elongate-spatulate, narrowly or 

 broadly attached, 4-7 X 2.5-4 X 0.2 cm. ; surface slightly zonate, 

 minutely fibrose-lacerate, margin lacerate, fertile; context very 

 thin, fibrous; tubes about 2 mm. long, mouths large, angular, 

 soon becoming irpiciform, edges acute, separating into irregular, 

 toothed plates. 



