SOUTHERN POLYPORES 49 



Very common on dead deciduous wood in most of the southern 

 states at low elevations. 



33. PYROPOLYPORUS Murrill 



Hymenophore large, perennial, epixylous, sessile, ungulate or 

 applanate; surface sulcate, usually anoderm and often rough or 

 rimose; context woody or punky, brown; tubes brown, cylindric, 

 stratose, usually thick- walled ; spores smooth, hyaline. 



Pileus thick, usually ungulate. 



Surface finally blackish and often rimose with age. 



Context fulvous, opaque; found on Prunus. I. P.fulvus. 



Context melleous, lustrous; found on Juniperus. 2. P. texanus. 



Surface remaining brown, with crust entire. 3. P. Calkinsii. 



Pileus thin, conchate or applanate. 



Pileus broadly effused, slightly reflexed or entirely resupinate. 4. P. conchatus. 

 Pileus dimidiate to flabelliform, not effused. 5. P. Langloisii. 



i. PYROPOLYPORUS FULVUS (Scop.) Murrill 



Pileus woody, triquetrous, rarely ungulate, thick and broadly 

 attached behind, 1-3 X 5-7 X 3-8 cm.; surface smooth, very 

 slightly sulcate, velvety, ferruginous, becoming horny and 

 glabrous and finally nearly black with age; margin subobtuse, 

 ferruginous, velvety; context woody, fulvous, 1-2 cm. thick; 

 tubes evenly stratified, 2-3 mm. long each season, fulvous, 

 mouths circular, 3 to a mm., edges obtuse, entire, ferruginous to 

 fulvous; spores globose, compressed on one side, hyaline, 5.5-6 

 X 4.5-5 /*; cystidia fulvous, ventricose, 15-20 X 7-9 . 



Frequent in Tennessee and Alabama on diseased trunks and 

 stumps of various species of Prunus, causing decay. 



2. PYROPOLYPORUS TEXANUS Murrill 



Pileus ungulate, broadly attached, plane below, 3-13 X 4-11 

 X 2-6 cm.; surface tomentose, smooth, melleous, becoming 

 reddish-brown or black, glabrous and rimose behind; margin 

 very obtuse and rounded, melleous, tomentose, smooth; context 

 woody, distinctly zonate, 1.5-2.5 cm. thick, melleous to dark- 

 luteous with silky luster; tubes evenly stratified, not separated 

 by layers of context, 3-5 mm. long each season, concolorous, 

 without luster, mouths circular, 4-5 to a mm., edges obtuse, 

 entire, melleous to fulvous; spores globose, smooth, hyaline, 4-5 M- 



Frequent on Juniperus in Texas, as well as in New Mexico 

 and Arizona. 



