1925] 



BURT — THE THELEPHORACEAE OF NORTH AMERICA. XIV 285 



British Columbia: Agassiz, /. R. Weir, 364. (in Mo. Bot. Card. 



Herb., 16407); Comax, J. Macoun, 622 (in Mo. Bot. Gard. 



Herb., 55333); Kootenai Mts., Salmo, /. R. Weir, 485, 538 



(in Mo. Bot. Gard. Herb., 17619, 1738) ; Sidney, /. Macoun, 22, 



U, 64, 97 (in Mo. Bot. Gard. Herb., 5682, 55342, 5742, 55343); 



Squamish, J. Macoun (in Mo. Bot. Gard. Herb., 55180); 



Vancouver Island, J. Macoun, 356, 357 (in Mo. Bot. Gard. 



Herb., 55331, 55332); Victoria, J. Macoun, 576 (in Mo. Bot. 



Gard. Herb., 63502). 

 Washington: Bingen, W. N. Suksdorf, 699; Hoquiam, C. J, 



Humphrey, 6374; Kalama, C. J. Humphrey, 6139; Renton, 



C. J. Humphrey, 6633; Tacoma, W. A. Murrill, 145, comm. 



by N. Y. Bot. Gard. Herb, (in Mo. Bot. Gard. Herb., 55726). 

 Oregon: Corvallis, S. M. Zeller, 1813 (in Mo. Bot. Gard. Herb., 



56333) ; Eugene, C. J. Humphrey, 6086. 



63. P. verticillata Burt, n. sp. 



Type: in Mo. Bot. Gard. Herb. 



Fructifications effused, thick, membranaceous, separable, whit- 

 ish to ecru-drab in the herbarium, even the margin whitish, 

 rather thick, cottony; in section 1300 [x thick, not colored, con- 

 sisting of (a) a layer 500 (j. thick next to the substratum of densely, 

 longitudinally arranged hyaline hyphae about 3-33^ ^ in di- 

 ameter, and of (b) a zonate hjonenial layer 800 \l thick con- 

 taining many elongated cystidia; no gloeocystidia ; cystidia cylin- 

 dric, 150-200 X 6-7 ^, with 4-9 bands of incrusting matter, 

 protruding up to 45 [x; no spores found. 



Fructifications l]4r^]^ cm. long, 1-2 cm. wide. 



On rotten coniferous wood. Oregon. March. 



The cystidia of P. verticillata are of the thick-walled cylindric 

 type occurring in P. glebulosa but without as narrow a lumen, nor 

 with the latter abruptly, greatly enlarged near the apex. The 

 bands of incrusting matter on the cystidia are a unique character 

 of the type but are not retained in glycerine mounts of sections. 

 The very broad layer of longitudinally arranged hyphae along the 

 substratum and the very thick, separable fructifications tending 

 to ecru-drab are probably the more distinctive characters of this 

 species, which is distinct from P. (Gloeocystidium) pallidula. 



