1925] 



BURT THE THELEPHORACEAE OF NORTH AMERICA. XIV 353 



Washougal, R. H. Turk, comm. by S. M. Zeller, 2630 (in Mo. 



Bot. Gard. Herb., 63057). 

 California : Berkeley, comm. by W. A. Setchell, 1032 (in Mo. Bot. 



Gard. Herb., 44241); Stanford University, C. F. Baker, 12; 



Sierra Nevada Mountains, W. H. Harkness, 1025 (in Kew 



Herb., under the name Peniophora carnea Berk. & Cke.). 

 Mexico: Guernavaca, W. A. & E. L. Murrill, 358, 407 (in N. Y. 



Bot. Gard. Herb., and Mo. Bot. Gard. Herb., 54470, 54532). 

 Cuba: San Antonio de los Baiios, Havana Province, Earle & 



Murrill, 73, comm. by N. Y. Bot. Gard. Herb. 

 Porto Rico: Rio Piedras, J. A. Stevenson, 2451, 2920, 3067, 5581, 



5638 (in Mo. Bot. Gard. Herb., 9185, 3125, 9055, 6957, 54585). 

 Jamaica: Chester Vale, W. A. & E. L. Murrill, 334, comm. by 



N. Y. Bot. Gard. Herb.; Cinchona, W. A. & E. L. Murrill, 



596, comm. by N. Y. Bot. Gard. Herb.; Troy and Tyre, 



W. A. & E. L. Murrill, 894, comm. by N. Y. Bot. Gard. 



Herb. 

 Africa: Stellenbosch, Cape Colony, P. A. van der Bijl, 326 (in Mo. 



Bot. Gard. Herb., 63397). 

 Japan: Mt. Mikuma, Province Awaji, A. Yasuda, 4 (in Mo. Bot. 



Gard. Herb., 55666). 



119. P. caesia Bresadola in Bourdot & Galzin, Soc. Myc. Fr. 

 Bui. 28: 406. 1913; Rea, Brit. Basid., 695. 1922. 



Corticium caesium Bresadola, Fungi Trid. 2: 39. pi. 145, f. 2. 

 1892; Sacc. Syll. Fung. 11: 126. 1895. 



Illustrations : Bresadola, loc. cit. 



Type: authentic specimen in Burt Herbarium. 



Fructifications broadly effused, closely adnate, very thin, pale 

 mouse-gray to pale purplish-gray, delicately pruinose, cracked in 

 drying, the margin similar; in section brownish, 40-90 y. thick, 

 dark and opaque next to substratum; hyphae densely interwoven, 

 somewhat colored; cystidia near the substratum 15-25 X 10-20 (jl, 

 incrusted, becoming slightly colored, not numerous; spores hy- 

 aline, even, curved, 6-8 X 23^-3 y. as found in preparations of 

 sections, probably larger in spore falls. 



Fructifications 2-10 X 1-2 cm. 



On fallen limbs of Syringa, Betula, Quercus, and other frondose 



4- 



