SOUTHERN POLYPORES 



Hymenium umbrinous or fuscous. 



Hymenium umbrinous; surface 



opaque, with very few zones. 3. C. alabamensis. 



Hymenium fuscous; surface shining, 



multizonate. 4. C. sector. 



Pileus not marked with glabrous zones; hymeno- 



phoresemiresupinate; tubes large, hexagonal. 5. C. hexagoniformis. 

 Pileus entirely glabrous at maturity. 



Margin of pileus entire or lobed, not becoming 



nmbriate or lacerate. 

 Context punky, 2-3 mm. thick; tubes 6 to 



a mm. 6. C. subectypus. 



Context fleshy-tough, 13 mm. thick; tubes 

 4-5 to a mm.; pileus almost brittle when 



dry. 7. C. ochrotinctellus. 



Margin of pileus very thin, becoming nmbriate 



or lacerate at maturity. 

 Tubes large, 2-3 to a mm., margin fimbri- 



ate. 8. C. Drummondii. 



Tubes only half as large, margin lacerate. 9. C. membranaceus. 

 Surface of pileus clothed entirely with a conspicuous 



hairy covering. 

 Pileus 5 mm. or more in thickness and several 



centimeters broad; surface roughly hirsute. 10. C. nigromarginaius. 



Pileus much thinner. 



Pileus 2-6 cm. broad. n. C. sericeohirsulus. 



Pileus scarcely i cm. broad. 12. C. sublilacinus. 



Tubes soon breaking up into long irpiciform teeth. 



Pileus 5-10 cm. broad and 5 mm. or more thick. 13. C. molliusculus. 



Pileus much smaller and thinner. 



Surface ashy- white, villose; plants confined to coni- 

 ferous wood. 14. C. abietinus. 

 Surface wood-colored, tomentose; plant found on 

 both deciduous and coniferous wood. 15. C. prolificans. 



I. CORIOLUS VERSICOLOR (L.) Qu61. 



Pileus densely imbricate, very thin, dimidiate, conchate, 

 2-4 X 3-7 X 0.1-0.2 cm.; surface smooth, velvety, shining, 

 marked with conspicuous, glabrous zones of various colors, 

 mostly latericeous, bay, or black; margin thin, sterile, entire; 

 context thin, membranous; tubes punctiform, less than I mm. 

 long, white to isabelline within, mouths circular to angular, 

 regular, even, 4-5 to a mm., edges thick and entire, becoming 

 thin and dentate, white, glistening, at length opaque-isabelline 

 or slightly umbrinous; spores allantoid, 4-6 X 1-2 ju. 



Extremely common throughout on all forms of dead wood. 

 It also causes a serious root-rot in many trees and is a wound 

 parasite on Catalpa. 



