SPHAGNUM BOGS OF ALASKA 181 



11. Empeti^m nigrum is the most characteristic plant of Alaska 

 bogs both as to the uniformity of its occurrence and as to its abun- 

 dance in individual bogs. 



12. Kalmia glauca is much smaller in Alaska bogs than in Puget 

 Sound bogs and does not form so dense a growth. The same is 

 true of Ledum palustre as compared with its congeners in Puget 

 Sound bogs. 



13. Ledum and Betula are usually prostrate in Alaska when 

 they grow on rocks but not when they grow in bogs. 



14. Oxycoccus oxycoccus, is the only plant that the writer has 

 found common in the bogs of both Alaska and Puget Sound that 

 he has not found also outside of bogs. 



15. The plants most characteristic of Alaskan sphagnum bogs 

 have been reported as follows, so far as the writer has had access 

 to the literature: 



Empetrum nigrum. Unalaska, Kellogg and Muir; without locality, Evans; 

 Kotzebue Sound, Muir; Saint George Island, Macoun; Saint Paul Island, Macoun; 

 Douglas Island, Grace E. Cooley. 



Ledum palustre. Saint Michaels, Muir; Kotzebue Sound, Muir; without locali- 

 ty, Evans; Norton Sound to Point Barrow and Northern coast, Rothrock; abun- 

 dant at Saint Michaels, common at Unalaska, Atka and Attn, Turner. 



Ledum groenlandicum. Without locality, Evans; (under Ledum latifolium) 

 Sitka, Kellogg; "Alaska," Kellogg; Sitka, Rothrock. 



Ledum sp. Ounalaska Harbor, Muir. 



Kalmia glauca. "Alaska," Kellogg; Douglas Island, Grace E. Cooley; Sitka, 

 Rothrock. 



Oxycocus oxycoccus. (Under Vaccinium oxycoccus) Fort Simpson, Kellogg; 

 without locality, Evans. 



Vaccinium vitis-idaea. Golvin Bay, Muir; Kotzebue Sound, Muir; Cape Prince 

 of Wales, Muir; "Alaska," Kellogg; without locality, Evans; New Metlakatla, 

 Grace E. Cooley; Point Barrow, Ray; Unalaska, Saint Laurence, Sitka, Norton 

 Sound to Point Barrow and on the northern coast, Rothrock; abundant through- 

 out the coast line of the mainland and on the eastern islands of the Alaskan chain, 

 Turner. 



Loiseleuria procumbeus. Saint Michaels, Muir; Cape Prince of Wales, Muir; 

 Cape Lisburne, Unalaska, Chamisso Island, Rothrock ; plentiful in small patches 

 throughout the Aleutian Islands, Turner; mountain near Juneau, Grace E. Cooley. 



Andromeda polifolia. Saint Michaels, Muir; Cape Prince of Wales, Muir; 

 Sitka, Rothrock; Kotzebue Sound, Rothrock. 



Drosera rotundifolia. Sitka, Rothrock; Fort Simpson, Kellogg; Douglas Is- 

 land, Grace E. Cooley. 



Pinguicula villosa. Ounalaska Island, Rothrock; Norton Sound, Rothrock; 

 Chamisso Island, Rothrock; Golvin Bay, Muir. 



