1926] 



BURT THELEPHORACEAE OF NORTH AMERICA. XV 197 



Type : fragment of type and authentic specimen in Burt Herb. 



Fructifications broadly effused, thin, membranaceous, tender, 

 small pieces separable, white when fresh, becoming ivory-yellow 

 to cream-buff in the herbarium, even, somewhat cracked and 

 showing a loose, cottony subiculum which extends out beyond the 

 hymenium as a fimbriate, white margin; in section 100-300 \l 

 thick, not colored, composed of loosely interwoven and ascending, 

 thin-walled hyphae 2}/-3J^ \jl in diameter, sparingly nodose- 

 septate, rarely incrusted in the subhymenium; no gloeocystidia ; 

 spores hyaline, even, 4-6 X 2-3 [x. 



Fructifications 2-6 cm. long, 1-3 cm. wide. 



On decaying limbs of both coniferous and frondose species. 

 In Europe and from New Hampshire to Pennsylvania, in Il- 

 linois, British Columbia to Mexico, and in Bermuda. June to 

 December. Infrequent. 



P. pelliculare has delicate white to creamy fructifications dis- 

 tinguishable from those of C. lacteum by the small spores not at 

 all globose. 



Specimens examined : 

 Exsiccati: Thumen, Myc. Univ., 1607, under the name Cor- 



ticium laeve. 

 Finland: Mustiala, P. A. Karsten, fragment of type comm. by 



Karsten to Bresadola and by Bresadola to Romell and by 



Romell to Burt. 

 Sweden: K. Starback, authentic specimen comm. by Karsten; L. 



Romell, 319; Femsjo, E. A. Burt, two gatherings; Stockholm, 



L. Romell, 298 A, 320. 

 New Hampshire: Chocorua, W. G. Farlow, C37 (in Mo. Bot. 



Gard. Herb., 43968). 

 Vermont: Middlebury, E. A. Burt. 

 New York: Albany, H. D. House (in N. Y. State Mus. Herb., and 



in Mo. Bot. Gard. Herb., 57490); Orient Point, R. Latham, 3 



(in N. Y. State Mus. Herb., and Mo. Bot. Gard. Herb., 55700). 

 New Jersey: Belleplain, C. L. Shear, 1237; Newfield, /. B. Ellis, 



in Ell. & Ev. Fungi Col., 1207. 

 Pennsylvania: Bear Meadows, L. 0. Overholts, 2890 (in Mo. Bot. 



Gard. Herb., 5717); Trexlertown, W. Herbst, Id. 

 Michigan: Ann Arbor, C. H. Kaufman, 19. 



