1925] 



BURT THE THELEPHORACEAE OF NORTH AMERICA. XIV 291 



2527, in part; Coolin, /. R. Weir, 11526 (in Mo. Bot. Gard. 



Herb., 63291); Priest River, E. E. Hubert, comm. by J. R. 



Weir (in Mo. Bot. Gard. Herb., 63258). 

 British Columbia: Kootenai Mts., Salmo, J. R. Weir, 536 (in 



Mo. Bot. Gard. Herb., 22598). 

 Washington: Mt. Paddo, W. N. Suksdorf, 729. 

 Arizona: Coronado National Forest, Santa Catalina Mountains, 



G. G. Hedgcock & W. H. Long, comm. by C. J. Humphrey, 2544 



(in Mo. Bot. Gard. Herb., 63534). 



67. P. pilosa Burt, n. sp. 

 Type: in Burt Herb. 



Fructifications effused, thin, closely adnate, hypochnoid, be- 

 coming pale olive-buff in the herbarium, the margin thinning out; 

 in section 40-60 \i thick, not colored, composed of loosely arranged, 

 thin-walled hyphae 2J^ 3 [i in diameter, not incrusted, and of 

 cystidia starting from the substratum; no gloeocystidia ; cystidia 

 not incrusted, thin-walled, cylindric, 60-100 X 43^-7 p., pro- 

 truding up to 70 [t. beyond the basidia, often constricted near the 

 tip and terminating in an ovoid-shaped body; basidia 4-spored; 

 spores hyaline, even, 6-8 X 4-4J^ \i, copious. 



Fructifications fragmentary, with the largest fragment 2% cm. 

 long, 1 cm. wide. 



On decaying coniferous wood. New York and Alabama. Prob- 

 ably rare. 



P. pilosa forms a gray, downy covering on old weathered pine 

 wood, with the basidia not forming a compact hymenium. In 

 aspect this species somewhat resembles P. tenuis but there are 

 no gloeocystidia, and the numerous long, cylindric cystidia, some- 

 times terminating in a single spore-shaped end and sometimes in 

 a short row of 2 or 3, are distinctive. 



Specimens examined: 

 New York: East Gal way, E. A. Burt; Ithaca, G. F. Atkinson, 



1W5, type. 

 Alabama: Montgomery, R. P. Burke, 154 (in Mo. Bot. Gard. 



Herb., 3650). 



68. P. Peckii Burt, n. sp. 



Type: in Burt Herb, and probably in N. Y. State Mus. Herb. 



O 



