NORTHERN POLYPORES 23 



Very common throughout, especially northward, on fallen 

 decayed wood of deciduous trees. 



3. POLYPORUS ADMIRABILIS Peck 



Pilei tufted, more or less imbricate, united near the base, the 

 cluster very large, 30 cm. or more in diameter, centrally depressed 

 or subinfundibuliform, the individual pilei 10-15 cm - broad, 

 1-3 cm. thick; surface white and finely pseudosquamose when 

 young, sometimes cracking, at length smooth and glabrous and 

 slightly tinged with yellow; margin entire, rather thick, incurved; 

 context fleshy-tough to rigid and friable, homogeneous, white to 

 yellowish-discolored, 1-2.5 cm. thick; tubes slender, 3-7 mm. 

 long, white to yellowish, fulvous with extreme age, mouths 

 nearly circular, 3-4 to a mm., edges thin, dentate; spores globose, 

 somewhat flattened, 5-6 /x; stipe short, thick, smooth, glabrous, 

 white, not blackening, often obsolete, 1-2 cm. long, 3 cm. thick. 



Occasional on decayed trunks of apple trees in Maine, Massa- 

 chusetts, and Connecticut. 



4. POLYPORUS PHAEOXANTHUS Berk. & Mont. 



Pileus convex, subhemispheric, 2.5 X 0.5 cm.; surface smooth, 

 glabrous, bay-brown; margin acute, straight, slightly undulate; 

 context fleshy, luteous, rigid, friable and much shrunken when 

 dry, 1-2 mm. thick; tubes remote, minute, very short, 0.5 mm. 

 or less in length, mouths irregular, 6-8 to a mm., edges thick 

 (specimen young), obtuse, luteous; stipe central, cylindric, solid, 

 fleshy, concolorous, floccose at the base, 4 cm. long, 3 mm. thick. 



Found once on fallen oak wood at Columbus, Ohio. 



5. POLYPORUS ALBICEPS Peck 



Pileus tough, circular, plane or slightly depressed, 2.5-5 cm - 

 broad, 5-10 mm. thick; surface dry, glabrous, opaque, smooth, 

 white; margin thin, entire, concolorous; context white, 4-8 mm. 

 thick; tubes decurrent, I mm. long, white within, mouths scarcely 

 visible to the unaided eye, subcircular, edges thin, white, dentate; 

 stipe central, cylindric, even, 2.5-4 cm - l n g 6 ~ 8 mm - thick, 

 resembling the pileus in surface and substance. 



Found once on buried wood under walnut trees at Sea Beach, 

 New Hampshire. 



6. POLYPORUS HUMILIS Peck 



Pileus spatulate, suborbicular or reniform, I X 2-2.5 X 0.1-0.3 

 cm.; surface white, soft, elastic, subglabrous, azonate; margin 



