56 SOUTHERN POLYPORES 



laccate, shining, radiate-rugose, concentrically sulcate, yellow to 

 reddish-chestnut, at length opaque-dark-brown, usually marked 

 near the margin with alternating bay and tawny zones; margin 

 usually very thin and acute, often curved downward and undu- 

 late, rarely becoming truncate, white, at length concolorous; 

 context soft-corky or woody, radiate-fibrous, concentrically 

 banded, ochraceous-f ulvous ; tubes 0.5-2 cm. long, 3-5 to a mm., 

 brown within, mouths circular or angular, white or grayish- 

 brown, edges thin, entire; spores ovoid, obtuse at the base, 

 attenuate and truncate at the apex, smooth, yellowish-brown, 

 9-11 X 6-8 n; stipe laterally attached, usually ascending, irre- 

 gularly cylindric, 1-4 X 0.5-1.5 cm., resembling the pileus in 

 color, surface, and substance, often obsolete. 



Frequent throughout on diseased trunks and dead stumps of 

 both deciduous and coniferous trees. Very similar in its stipitate 

 forms to Polyporus lucidus of Europe. G. subperforatum Atk., 

 described from Ohio, is probably distinct. 



3. GANODERMA ZONATUM Murrill 



Pileus very soft-corky, sessile, dimidiate, applanate or convex 

 above, concave below; surface glabrous, zonate, not sulcate, 

 5 X 7 X 1.5 cm.; margin velvety, acute, becoming obtuse and 

 concolorous; context very soft, floccose, radiate-fibrous, con- 

 centrically banded, 0.5 cm. thick, chocolate-brown; hymenium 

 velvety, not stratose; tubes I cm. long, 3-4 to a mm., umbrinous 

 within, mouths white to umbrinous, regular, polygonal, stuffed 

 at first with whitish material, covered 0.5-2 cm. from the margin 

 with yellowish or reddish varnish; edges entire, obtuse to acute; 

 spores elongate-ellipsoid, smooth, pale-yellowish-brown, 8-10 

 X 4-6 /i. 



Found once on dead wood in Florida. 



4. GANODERMA SULCATUM Murrill 



Pileus corky, dimidiate, sessile or arising from a lateral tubercle, 

 plane or convex above, thickest behind, 8 X 1 1 X 2 cm. ; surface 

 laccate, glabrous, azonate, fulvous to chestnut, deeply sulcate; 

 margin rounded, velvety, ochroleucous, at length concolorous; 

 context very soft, floccose, radiate-fibrous, concentrically banded, 

 I cm. thick, umbrinous-chestnut; tubes indistinctly stratified, 

 1.25 cm. long, 4-5 to a mm., umbrinous within, mouths whitish 

 or yellowish, at length umbrinous, dissepiments entire, obtuse; 

 spores ellipsoid, pale-yellowish-brown, smooth, 8-10 X 4-6 p. 



Occasional on dead trunks of palmetto in Georgia and Florida. 



