1926] 



BURT THELEPHORACEAE OF NORTH AMERICA. XV 287 



septate, and of comb-shaped or antler-shaped branching, slightly 

 colored masses of about 5-10 [l in diameter each and having 

 many prongs; no gloeocystidia; basidia 6-12 X 4-5 \l, immature, 

 immersed in the antler-shaped paraphyses which form the surface 

 of the hymenium; no spores found. 



Fructification 1-6 cm. long, J^-13^ cm. wide. 



On bark of dead frondose limbs. Florida and West Indies. 

 October to March. 



C. pectinatum has the general aspect and color of C. scutellare 

 and structure of C. investiens but with much smaller and more 

 delicate hyphae and antler-shaped organs than the latter. 



Specimens examined: 

 Florida: Cocoanut Grove, R. Thaxter, 76, type (in Mo. Bot. 



Gard. Herb., 43898); Royal Palm Hammock, W. A. Murrill, 



131, comm. by N. Y. Bot. Gard. Herb., 63762). 

 Cuba: Omaja, C. J. Humphrey, 2596 (in Mo. Bot. Gard. Herb., 



8730). 



94. C. racemosum Burt, n. sp. 



Type: in Burt Herb. 



Fructifications broadly effused, closely adnate, thin, dry, not 

 separable, drying cream-buff, even, not shining, becoming trans- 

 versely cracked in the central portions, the margin thinning out, 

 indeterminate, concolorous; in section 70-140 \l thick, colored 

 cream-buff, composed of very densely arranged, erect, branching 

 and interwoven hyphae 2-2 3^ y. in diameter; no gloeocystidia; 

 paraphyses in hymenial surface with tips branched sometimes 

 racemosely, sometimes in antler-shaped manner, often irregularly, 

 these branches about J^ ^ in diameter; spores hyaline, even, 

 flattened on one side, 4-6 X 2-3 y.. 



Fructifications 2-12 cm. long, 1-4 cm. wide. 



On bark and wood of decaying logs of Thuja plicata, Larix oc- 

 cidentalis, Abies grandis, and Pseudotsuga taxifolia. Idaho, 

 British Columbia, and Washington. July to September. 



The slender branched paraphyses of C. racemosum and lack of 

 gloeocystidia locate this species in the group with C. Atkinsonii, 

 C. albidocarneum, C. rubropallens, and C. rubrocanum. The antler- 

 shaped branching of occasional paraphyses connects this species 



