[Vol. 12 

 330 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



forests. Europe and northern United States and Canada west- 

 ward to Idaho and Manitoba. July to October. Uncommon. 

 This species may be recognized by its cinnamon-buff, yellow- 

 margined, closely adnate fructifications which occur, so far as 

 known at present, only on bare wood of spruce and pine. I 

 cannot understand how von Hohnel & Litschauer, loc. cit., could 

 have regarded P. subsulphurea as perhaps not specifically distinct 

 from the Hannover specimens of P. radicata (P. filamentosa) 

 which have their hyphae heavily incrusted with a yellow matter 

 soluble in potassium hydrate solution, and much larger, more 

 incrusted cystidia, and fructifications only loosely adnate when 

 present on decorticated wood and margined with conspicuous 

 mycelial strands. 



Specimens examined: 

 Finland: Mustiala, P. A. Karsten, authentic specimen of Xero- 



carpus subsulphureus. 

 Sweden: L. Romell, 182. 

 France: Aveyron, A. Galzin, 21033, comm. by H. Bourdot, 



18426. 

 Canada: Lower St. Lawrence Valley, J. Macoun, 62. 

 New York: Cascade, C. H. Peck (in N. Y. State Mus. Herb., 



T. 31, and Mo. Bot. Gard. Herb., 56072); Clear Lake, G. F. 



Atkinson, 5048; Floodwood, E. A. Burt, C. H. Peck, 5, and an 



unnumbered specimen (in N. Y. State Mus. Herb., and Mo. 



Bot. Gard. Herb., 56017); North Elba, C. H. Peck, type of 



Corticium subincarnatum (in N. Y. State Mus. Herb.). 

 Minnesota: Vermilion Lake, E. W. D. Holway, 155, the Corticium 



epichlorum of Geol. & Nat. Hist. Survey of Minn, but not C. 



epichlorum Berk. & Curtis (in U. S. Dept. Agr. Herb, and Burt 



Herb.). 

 Montana: Melrose, E. E. Hubert, comm. by J. R. Weir, 11431 (in 



Mo. Bot. Gard. Herb., 63270). 

 Idaho: Priest River, J. R. Weir, H. 

 Manitoba: Norway House, G. R. Bisby, H78 (in Mo. Bot. Gard. 



Herb., 61660). 



-^ 99. P. martiana (Berk. & Curtis) Burt, n. comb. 



Corticium martianum Berkeley & Curtis, Grevillea 1: 179. 



