30 TROPICAL POLYPORES 



acute, deflexed, white, entire; context white, firm, fibrous, 

 homogeneous; tubes I mm. long, stramineous within and without, 

 mouths regular, 4-5 to a mm., circular to slightly angular, 

 glistening, edges obtuse, entire. 



Collected once between Moneague and Union Hill, Jamaica, 

 on dead wood. 



10. EARLIELLA Murrill 



Hymenophore medium to large, annual, epixylous, semi- 

 resupinate, thin and dry but rigid ; surface jpelliculose, glabrous, 

 zonate, more or less reddish-brown in color; context white, 

 coriaceous, zonate; hymenium flesh-colored, tubes medium, 

 irregular, becoming thin-walled; spores smooth, hyaline. 



i. EARLIELLA CORRUGATA (Pers.) Murrill 



Pileus annual, often reviving, semiresupinate, laterally ex- 

 tended, conchate, imbricate, 3-6 X 5-15 X 0.2-0.5 cm.; surface 

 thinly encrusted, glabrous, rugose, dark-reddish-brown behind, 

 or with a white marginal band 3-12 mm. in width; margin 

 tumid, at length thin, undulate or lobed, fertile; context con- 

 centrically zonate; tubes 2-3 mm. long, 2-4 to a mm., white 

 within, the mouths reddish-flesh-colored fading to white, dissepi- 

 ments at first thick, at length becoming thin and irregular with 

 wavy edges; spores ellipsoid, 3-4 X 5-6 /*. 



Common throughout on dead hardwood trunks. 



ii. RIGIDOPORUS Murrill 



Hymenophore annual, at times reviving, epixylous, sessile, 

 dimidiate to circular, simple or imbricate; surface pelliculose, 

 multizonate, margin thin, incurved when dry; context thin, 

 white, fleshy-corky, very rigid when dry; tubes minute, regular, 

 light-colored, mouths usually pruinose when young; spores 

 smooth, hyaline. 



Pileus effused, very narrowly reflexed. i. R. microstomus. 



Pileus circular, fixed at the center. 2. R. evolutus. 



Pileus normally expanded, dimidiate or fan-shaped, sometimes 



decurrent. 

 Tubes very short, 0.5-1.5 mm. long. 



Pileus latericeous to bay with isabelline lines; tubes 6-7 



to a mm. 3. R. substereinus. 



Pileus bay to blackish; tubes 10 to a mm. 4. R. Liebmanni. 



Tubes rather slender, 2-4 mm. long. 



Edges very obtuse. 5- R- contraries. 



Edges thin. 6. R. surinamensis . 



