288 Umversifj/ of California Pi(hlirafio)is. [Botany 



even up to Sitka or Yakutat Bay, or farther ou. 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 i)ro('eed 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.4^. 



Bangia atropurpurea f. fuscopurpurea (I)illwyn) J. Agardh. 



On old wood of piles, Hoats, and wharves, in the litoral zone. 

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

 McGregor, No. 5691! ; Juneau, Alaska, ir.^'l.^S'. and A.A.L., No. 

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

 purpured Pacifica) ; Port Renfrew, B. C, Tildpn, No. 388! , under 

 B. rprmiciilaris, Butler and PoUey, No. Ill; west coast of 

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

 N.L.G., No. 684!; Seattle, Wash., X.L.G., Nos. 806!, 806a!; 

 Pleasant Beach, Kitsap, County, Wash.. X.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. vermicularts of the Calif ornian 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. fuscopHrpurea. It seems to us some- 

 what doubtful, however, whether B. vt^rtnindaris is, itself, 

 distinct from this species. J. G. Agardh (1882, ]). 87) 

 seems to have been inclined to separate the Calif ornian form 

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

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

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

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



