76 TROPICAL POLYPORES 



4. FOMES SCUTELLATUS (Schw.) Cooke 



Pileus woody, dimidiate or scutellate, concave below, 0.5-0.7 

 X 1-1.5 X 0.3-0.5 cm.; surface rugose, tuberculose, zonate, 

 fuscous-black; margin acute, deflexed, pallid to light-brown; 

 context woody, indistinctly zonate, isabelline, 2-3 mm. thick; 

 tubes indistinctly stratified, 1-1.5 mm. long each season, isa- 

 belline within, mouths subcircular to rhomboid, 4 to a mm., 

 edges rather thin, obtuse, entire, chalk-white, becoming avel- 

 laneous. 



Occasional on dead deciduous wood at Jalapa, Mexico. 



5. FOMES ANNOSUS (Fries) Cooke 



Pileus woody, dimidiate, very irregular, conchate to applanate, 

 10-13 X 5-8 X 0.5-2 cm.; surface at first velvety, rugose, 

 anoderm, light-brown, becoming thinly encrusted, zonate, and 

 finally black with age; margin pallid, acute, becoming thicker; 

 context soft-corky to woody, white, 0.3-0.5 cm. thick; tubes 

 unevenly stratified, 2-8 mm. long each season, white, mouths 

 subcircular to irregular, 3-4 to a mm., edges rather thin, entire, 

 firm, white, unchanging; spores subglobose or ellipsoid, smooth, 

 hyaline, 5-6 X 4-5 M- 



Reported twice by Wright on pine logs in Cuba. 



6. FOMES SUBFERREUS Murrill 



Pileus corky to woody, conchate or applanate, imbricate, 

 usually longitudinally effused, 3-9 X 5-15 X 1-2 cm.; surface 

 velvety, rugose-striate, slightly sulcate, black, with traces of 

 purple, becoming glabrous and gray with age; margin subobtuse, 

 pallid, marked with purplish-black blotches; context punky, 

 isabelline, 0.5-1 cm. thick; tubes unevenly stratified, 2-3 mm. 

 long each season, glistening- white, discolored in the older layers, 

 mouths circular, 5 to a mm., edges obtuse, glistening, milk-white 

 to avellaneous or isabelline; spores globose, smooth, hyaline, 3 p. 



Occasional on hardwood logs in Cuba, western Jamaica, Costa 

 Rica, and Honduras. 



7. FOMES LIGNEUS (Berk.) Cooke 



Pileus very hard, applanate or ungulate, 5-10 X 13-15 X 4-8 

 cm.; surface smooth, sulcate, dark-brown or black, becoming 

 horny-encrusted and shining with age; margin obtuse, pallid; 

 context hard and woody, white to pale-umbrinous, 0.5-1 cm. 

 thick, extremely scanty in old specimens; tubes evenly stratified, 

 3-5 mm. long each season, white, mouths minute, circular, 3-4 



