TROPICAL POLYPORES 93 



apex, pallid to chestnut, encrusted, dull-avellaneous in type 

 specimens, 2 X 0.4-0.8 cm. 



Found once on dead trunks at San Jos6, Costa Rica. 



3. AMAURODERMA SUBRENATUM Murrill 



Pileus lateral, reniform, convex above, concave below, rigid 

 when dry, 2 X 3 X 0.2 cm.; surface glabrous, rugose, slightly 

 zonate, abruptly shallowly concentrically sulcate, avellaneous to 

 umbrinous, depressed behind; margin finely tomentose, zonate, 

 pallid, rather thick; context white, thin, fibrous, I mm. thick; 

 tubes not stratified, pale-isabelline when dry, 1-1.5 mm - l n S 

 mouths circular to hexagonal, regular, 4-5 to a mm., edges thick, 

 entire, pale-avellaneous ; stipe long, slender, slightly flexuose at 

 the base, erect above, cylindric, equal, laterally attached, simple, 

 umbrinous, opaque, firm and white within, 10 cm. long, 2 mm. 

 thick. 



Found once on the ground in British Honduras. 



4. AMAURODERMA COFFEATUM (Berk.) Murrill 



Pileus solid, corky, suborbicular, oblique, cespitose, 18-20 cm. 

 broad; surface smooth, thinly encrusted, opaque, reddish-brown; 

 margin pallid to brown, obtuse; context corky, pallid, pale- 

 isabelline in dried specimens; tubes decurrent, pallid, mouths 

 subcircular, 5 to a mm., darker than the context, edges obtuse, 

 entire; stipe laterally attached, elongate, cylindric, subequal, 

 obscure-brown, mixed with coffee-color, pruinose, pallid and 

 soft-corky, becoming fistulose, 3.5 cm. long, I cm. thick. 



Found once on decaying trunks in the island of St. Vincent, 

 West Indies. 



5. AMAURODERMA REGULICOLOR (Cooke) Murrill 



Pileus simple, corky, reniform, convex above, 2 X 2.5-4 X 0.3- 

 I cm.; surface silky, subzonate, smooth, purplish-fuscous; margin 

 subacute, more obscure; context fulvous, punky, homogeneous, 

 1-3 mm. thick; tubes not stratified, 3-5 mm. long, grayish- 

 umbrinous within, mouths hexagonal at maturity, 8 to a mm., 

 grayish-fuscous, lighter when young, edges thin, entire; stipe 

 lateral, ascending, contorted, fuscous, slightly tomentose, opaque, 

 4-8 cm. long, 8-12 mm. thick. 



Found a few times on decaying roots of deciduous trees in Cuba. 



