1926] 



BURT THELEPHORACEAE OF NORTH AMERICA. XV 253 



C. epigaeum is characterized by white color, 2-layered struc- 

 ture, elongated gloeocystidia, and large, subglobose spores. It is 

 related to C. lactescens but does not become stratose nor cracked 

 nor as hard and compact as the latter. The type specimen itself 

 should be used for comparison rather than the specimens from 

 widely separated localities which seem to me probably to be C. 

 epigaeum. 



Specimens examined: 

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



Herb., 13954). 

 New York: Karner, H. D. House, comm. by N. Y. State Mus. 



Herb., 14.160 (in Mo. Bot. Gard. Herb., 44705). 

 Ohio: Cincinnati, C. G. Lloyd, 4517. 

 Michigan: New Richmond, C. H. Kaufman, 20 (in Mo. Bot. 



Gard. Herb., 9905). 

 British Columbia: Hastings, J. Macoun, 129. 

 Washington: Bingen, W. N. Suksdorf, 896, 754. 

 Oregon: Carpenter, 100, type (in N. Y. Bot. Gard. Herb.). 



63. C. lactescens Berkeley, Outl. Brit. Fung. 274. 1860; 

 Fries, Hym. Eur. 650. 1874; Sacc. Syll. Fung. 6: 612. 1888; 

 Massee, Linn. Soc. Bot. Jour. 27: 138. 1890; Bresadola, Ann. 

 Myc. 1: 95. 1903; Wakefield, Brit. Myc. Soc. Trans. 4: 118. 

 pi 3, /. 6-8. 1913 ; Rea, Brit. Basid. 685. 1922. 



Thelephora lactescens Berkeley in Hooker, Eng. Fl. 2 2 : 169. 

 1836. Gloeocystidium lactescens (Berk.) v. Hohnel. & Litschauer, 

 K. Akad. Wiss. Wien Sitzungsber. 116: 784. 1907; Bourdot & 

 Galzin, Soc. Myc. Fr. Bui. 28: 366. 1913. Corticium Brink- 

 manni Bresadola in Brinkmann, Westfalische Prov.-Vereins f. 

 Wiss. u. Kunst Jahresber. 26: 128. 1898. 



Type: in Kew Herb. 



Fructifications broadly effused, rather thick, closely adnate, 

 waxy-fleshy, small pieces separable, whitish to flesh color and 

 buff-pink when fresh, becoming light buff to avellaneous in the 

 herbarium, even, contracting greatly in drying and forming in 

 thick fructifications very numerous short fissures with somewhat 

 resin-colored sides, the margin whitish, narrow, when fresh exud- 

 ing a watery white milk where wounded; in section 200-1000 (j. 



