TROPICAL POLYPORES 29 



mm. thick; tubes slender, 3-5 mm. long, white within, mouths 

 circular, 4-5 to a mm., edges thick, white, entire, becoming 

 thinner, glistening and subfulvous. 



Occasional on dead wood in the West Indies. 



6. TRAMETES LIGNEA Murrill 



Pileus ungulate, dimidiate, sessile, somewhat laterally connate, 

 slightly decurrent, 3X6X3 cm.; surface smooth, azonate, 

 glabrous, white to isabelline; margin thick, obtuse, entire, con- 

 colorous; context woody, white, 2.5 cm. thick; tubes 5 mm. long, 

 white within, mouths angular, irregular, averaging 3 to a mm., 

 edges rather thin, entire, white to slightly discolored. 



Found once on dead timber in Nicaragua. 



7. TRAMETES RUTILANTIFORMIS Murrill 



Pileus thick, subtriangular in section, convex above and below, 

 firm but of very light weight, dimidiate, rather broadly attached, 

 3X4X1 cm.; surface glabrous, slightly sulcate, uneven, with 

 thin cuticle, fulvous tinged with chestnut, margin acute, entire, 

 glabrous, ochraceous; context soft-corky, 2-3 mm. thick, ochra- 

 ceous; tubes long, slender, ochraceous within, 3-10 mm. long, 

 mouths subcircular, 4-5 to a mm., edges somewhat glistening, 

 white or whitish, thin, entire, corky; spores oblong-ellipsoid, 

 4-5 X 1.5-2 M. 



Collected once on dead wood in British Honduras. 



8. TRAMETES JALAPENSIS Murrill 



Pileus of medium size, dimidiate to flabelliform, sessile, corky, 

 scarcely flexible, imbricate, 2-4 X 3-7 X 0.5-1 cm. ; surface pel- 

 liculose, glabrous, azonate, smooth, avellaneous to blackish-avel- 

 laneous, margin acute or slightly obtuse, sterile, entire, concolor- 

 ous; context punky, homogeneous, white with a faint yellowish or 

 rosy tint, 3-7 mm. thick; tubes 2 mm. long, rigid, corky to woody, 

 discolored-whitish within, mouths circular, 2-3 to a mm., edges 

 rather thick, entire or slightly dentate, pale-umbrinous. 



Collected once on a railway tie near Jalapa, Mexico. 



9. TRAMETES SUBSCUTELLATUS Murrill 



Pileus tough to rigid, concave below, convex above, vertically 



attached, circular in outline, I cm. broad, 2 mm. thick; surface 



nearly smooth, with a thin pellicle, ochraceous except at the 



vertex, where it is latericeous to castaneous; margin subobtuse or 



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