288 University of California Publications. [Botany 



even up to Sitka or Yakutat Bay, or farther on. There are, 

 however, to be found in the vicinity of Puget Sound, many 

 species characteristic of the Boreal Region which are not to 

 be found farther to the south. Many more species of the North 

 Atlantic are to be found in our territory than farther south along 

 the coast, and, as we proceed northward, these species and those 

 closely related to them form the characteristic portion of the 

 flora. In the Upper Boreal, the North Atlantic and Arctic 

 character is very pronounced, intermingled with some species 

 characteristic of the Lower Boreal. Very little, however, is 

 known, as yet, of the species of this region. 



Family BANGIACE^. 



Bangia atropurpurea f. fuscopurpurea (Dillwyn) J. Agardh. 



On old wood of piles, floats, and wharves, in the literal zone. 

 Dutch Harbor, Amaknak Island, Bay of Unalaska, Alaska, B. C. 

 McGregor, No. 5691! ; Juneau, Alaska, W.A.S. and A.A.L., No. 

 5199!; Victoria, B. C, Saunders (1901, p. 432, under B. atro- 

 purpurea Pacifica) ; Port Renfrew, B. C, Tilden, No. 333! , under 

 B. vermicularis , Butler and Polley, No. Ill; west coast of 

 Whidbey Island, Wash., N.L.G., No. 125! ; Orcas Island, Wash., 

 N.L.G., No. 684!; Seattle, Wash., N.L.G., Nos. 306!, 306a!; 

 Pleasant Beach, Kitsap, County, Wash.. N.L.G., No. 350! 



This seems to be the only species yet collected within the 

 limits of our territory, although we have kept careful watch for 

 the B. vermicularis of the Californian coast. As yet no species 

 has appeared which compares with that in coarseness of filament. 

 The specimen distributed by Miss Tilden under B. vermicularis 

 is slender even for f. fuscopurpurea. It seems to us some- 

 what doubtful, however, whether B. vermicularis is, itself, 

 distinct from this species. J. G. Agardh (1882, p. 37) 

 seems to have been inclined to separate the Californian form 

 of B. atropurpurea as distinct, but evidently decided not to 

 give it a different name, although the plate (loc. cit., pi. 1, 

 f. 34-39) has the legend, B. Pacifica, while the explanation 

 of the figures (loc. cit., p. 179) has the trinomial B. atropur- 



