WESTERN POLYPORES 31 



2. GANODERMA SEQUOIAE Murrill 



Pileus soft, tough, dimidiate, compressed-ungulate, subim- 

 bricate, convex above, concave below, 8 X 14 X 5 cm.; surface 

 at length glabrous, laccate, thinly encrusted, very uneven, 

 undulate, concentrically sulcate near the margin, shining-bay 

 to nearly black; margin ochraceous, smooth, undulate, subacute; 

 context punky, homogeneous, cremeous above, fulvous immedi- 

 ately adjoining the tubes, 2 cm. thick behind ; tubes indistinctly 

 stratified, 5-20 mm. long, grayish-fuscous to fulvous within, 

 mouths circular to angular, rather large, irregular, 1-2 to a mm., 

 edges thin, entire, cremeous to umbrinous, chestnut-colored when 

 bruised. 



Found once on a redwood trunk in California. 



3. GANODERMA POLYCHROMUM (Copeland) Murrill 



Hymenophore solitary or superimposed; pileus reniform, soft, 

 4 X 6 X 1-2 cm.; surface glabrous, thinly encrusted, azonate, 

 uneven, laccate, sublustrous, fulvous to bay; margin obtuse, 

 cremeous, sterile, uneven; context fulvous, darker below, homo- 

 geneous, punky, slightly zonate, I cm. thick; tubes annual, 5-10 

 mm. long, avellaneous within, mouths large, angular, irregular, 

 2-4 to a mm., edges thin, uneven, greenish-white to grayish- 

 fuscous; spores obovate, subfuscous, 7-10 p. 



Found a few times on decayed trunks of oak, willow, and 

 Schinus in California. 



26. CERRENA (Micheli) S. F. Gray 



Hymenophore small, epixylous, sessile, conchate, annual; 

 surface anoderm, hairy or subglabrous, zonate or sulcate; con- 

 text thin, white, fibrous, flexible; hymenium at first labyrinthi- 

 form, soon becoming irpiciform from the splitting of the dissepi- 

 ments; spores smooth, hyaline. 



i. CERRENA UNICOLOR (Bull.) Murrill 



Pileus coriaceous, sessile, imbricate, dimidiate to flabelliform, 

 conchate, often laterally confluent, 2.5-3.5 X 5-10 X 0.1-0.3 

 cm.; surface villose-strigose, rugose, zonate, plicate, isabelline 

 to fulvous, becoming avellaneous with age and blackish and 

 nearly glabrous behind; margin acute, undulate to lobed, paler, 

 zonate, strigose-tomentose ; context very thin, membranous, 

 white, homogeneous, scarcely I mm. thick; tubes decurrent, 

 labyrinthiform, 1-3 mm. long, white or isabelline to fuliginous or 



