SOUTHERN POLYPORES 



21 



Pileus circular, regular. 



Tubes decurrent, very short, entire; pileus 

 dark-purple, ornamented here and there 

 with paler radiating lines, finely tomen- 

 tose, becoming glabrous. 3. P. dibaphus. 



Tubes not decidedly decurrent, denticulate 

 when mature; pileus yellowish to smoky- 

 black, villose, at length glabrous. 4. P. Polyporus. 

 Pileus trumpet-shaped. 5. P. confusus. 

 Margin of pileus ornamented with cilia, which often dis- 

 appear with age. 

 Tubes alveolar; stipe setulose or squamulose. 



Pileus smooth, pellucid, fragile. 6. P. arculariellus. 



Pileus fuscous-squamulose to glabrous, opaque. 7. P. arcularius. 



Tubes not alveolar; stipe glabrous. 8. P. Tricholoma. 



Stipe wholly or partly black or fuliginous, variously attached, 



usually darker than the pileus. 

 Pileus squamose, very large, flabellif orm ; tubes large, 



alveolar. 9. P. caudicinus. 



Pileus glabrous; tubes punctiform. 



Stipe ivory-black below; pileus usually ochraceous, 

 scarcely depressed, margin even, not becoming 

 extremely thin. 10. P. elegans. 



Stipe smoky-black below; pileus usually chestnut- 

 colored, depressed at the center or behind, margin 

 usually very thin and irregular. n. P. fissus. 



1. POLYPORUS DELICATUS Berk. & Curt. 



Pileus circular, irregular, 1.5 X 1.25 X 0.1-0.3 cm.; surface 

 ochraceous, very smooth, evenly tomentose; margin thin, acute, 

 undulate, inflexed; context pallid, soft and elastic; tubes decur- 

 rent to the base, concolorous, mouths angular, 2 to a mm., pale- 

 yellowish-orange when dry, dissepiments thin, quite collapsed in 

 the single type specimen; stipe central, short, concolorous above, 

 hard, black and radicate below. 



One small specimen is at Kew, found on dead wood in Ala- 

 bama. It has the appearance of P. fractipes above, but is 

 firmer, with central stipe and tubes far larger and different in 

 color. 



2. POLYPORUS FRACTIPES Berk. & Curt. * 



Pileus reniform, irregular, about 5 cm. broad; surface ochra- 

 ceous, rugose, tomentose, hispid in some places; tubes very 

 small, 5 to a mm.; stipe irregularly distorted, adnate behind at 

 times, pulverulent, 2.5-4 cm - long, 4-9 mm. thick. 



Collected a few times in South Carolina and Louisiana. Ac- 

 cording to some, P. humilis Peck is not distinct. 



