SOUTHERN POLYPORES 47 



4. 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 /* 



Common throughout on trunks and roots of various coniferous 

 trees, and rarely on deciduous trees, causing serious decay. 



5. FOMES UNGULATUS (Schaeff.) Sacc. 



Pileus corky to woody, ungulate, 8-15 X 12-40 X 6-10 cm.; 

 surface glabrous, sulcate, reddish-brown to gray or black, often 

 resinous; margin at first acute to tumid, pallid, becoming yellow- 

 ish or reddish-chestnut; context woody, pallid, 0.5-1 cm. thick; 

 tubes distinctly stratified, 3-5 mm. long each season, white to 

 isabelline, mouths circular, 3-5 to a mm., edges obtuse, white to 

 cream-colored ; spores ovoid, smooth, 6 /*. 



Frequent throughout on living trunks of conifers and less 

 frequent on deciduous trees growing near, causing a serious 

 disease. 



6. FOMES POPULINUS (Schum.) Cooke 



Pileus corky to woody, effused-reflexed, rarely applanate, 

 2-4 X 5-10 X 1-3 cm.; surface anoderm, velvety, white or 

 yellowish, usually overgrown with moss or otherwise disfigured 

 with age; margin acute, slightly deflexed, concolorous, blackish 

 where bruised, becoming thicker with age; context punky to 

 corky, white to ochroleucous, 3-8 mm. thick; tubes very dis- 

 tinctly stratified, 1-2 mm. long each season, concolorous, with a 

 resinous luster, mouths subcircular to angular, minute, 5-6 to a 

 mm., edges thin, uneven, white to cremeous, glistening; spores 

 globose, thin- walled, smooth, 3-4 p. 



Rather common throughout on living trunks of maple and 

 certain other deciduous trees, causing decay. 



7. FOMES MELIAE (Underw.) Murrill 



Pileus corky, conchate or ungulate, thick and decurrent at 

 the base, often imbricate, 3-5 X 5-8 X 1-3 cm.; surface ano- 

 derm, nearly smooth, subtomentose to glabrous, dirty-white; 



