ioo TROPICAL POLYPORES 



10. GANODERMA NITIDUM Murrill 



Pileus corky to woody, dimidiate or nearly circular, applanate, 

 rarely ungulate or columnar by accretion with age, convex above, 

 slightly concave below, 6-10 X 8-16 X 1.5-7 cm.; surface gla- 

 brous, abundantly sulcate, laccate, shining, bay to brownish-black, 

 flaky from the excess of resin exuded ; margin ochraceous, subob- 

 tuse, undulate to lobed, the new growth often forming a broad 

 lustrous band bordering the hymenium; context very thin, punky, 

 bay, homogeneous, 1-3 mm. thick; tubes stratified, very long 

 and slender, 1.5-2.5 cm., umbrinous to fuliginous within, mouths 

 circular to slightly angular, stuffed with whitish mycelium when 

 young, edges obtuse to very thin and uneven, white to umbrinous. 



Frequent on dead trunks in Honduras. 



ii. GANODERMA AREOLATUM Murrill 



Pileus very large and thick, of light weight, dimidiate, sessile, 

 convex above, plane to slightly convex below, 13 X 20 X 8 cm.; 

 surface azonate, glabrous, somewhat uneven, becoming areolate 

 by the cracking of the thin cuticle, fuliginous-bay to blackish-bay, 

 pallid in the cracks, margin acute, undulate or slightly lobed, 

 finely tomentose, grayish-brown; context soft-corky, somewhat 

 zonate, 1-3 cm. thick; tubes minute, corky to woody, isabelline 

 within and without, not distinctly stratified, 3-5 cm. long, mouths 

 subangular to irregular, 2-3 to a mm., edges thin, entire; spores 

 ellipsoid, smooth, hyaline or very pale yellowish, usually pointed 

 at one end, copious, n X 5-6 /*. 



Collected once on the dead trunk of a silk-cotton tree near 

 Colima, Mexico. 



12. GANODERMA TUBERCULOSUM Murrill 



Pileus rigid, dimidiate to reniform, applanate, 7-15 X 12-30 

 X 2-4 cm.; surface glabrous, laccate, shining, many times 

 shallowly sulcate, radiate-rugose, roughly tuberculose, especially 

 in large specimens, usually umbonate behind, bay to dull-brown 

 with age; margin cremeous to fulvous, glabrous, slightly undu- 

 late, subobtuse to truncate with age; context punky to soft- 

 corky, isabelline above, fulvous below, castaneous with age, 

 homogeneous, 5-10 mm. thick; tubes perennial, indistinctly 

 stratified, 1-2.5 cm - l n g> avellaneous within, slightly darker 

 with age, mouths circular, 4 to a mm., not stuffed when young, 

 edges obtuse, cream-colored, at length thin and darker in color; 

 spores ovoid, dark-brown, 8 X 6 /x. 



Occasional on dead wood in British Honduras, Panama, 

 western Jamaica, and Cuba. 



