vol.i] Setchell— Gardner. — Algce of Northwestern America. 257 



Laminaria bullata Kjelknan. 



In the sublitoral zone. St. Lawrence Island, Alaska, Kjell- 

 man (1889, p. 46); Prince William Sonnd and Sitka, Alaska, 

 and Puget Sound. Saunders, (1901, p. 428). 



We have seen no authentic specimen of this species and can 

 quote only the published references to it. We have a number of 

 forms, decidedly diverse in habit and somewhat in structure, 

 which we cannot refer elsewhere, and consequently, have placed 

 them provisionally under form names connected with L. bullata, 

 as follows. 



Laminaria bullata f . angusta Setchell and Gardner f. now 

 Stipe short, 1—2 cm. long, terete or slightly flattened above. 

 Blade 15-45 em. long, 3-5 cm. wide, cuneate at the base, usually 

 more or less falcate, with a row of deep bullae within each margin. 

 Mucilage ducts in the stipe in a dense circle close to the periphery, 

 elongated radially and with conspicuous secreting cells; in the 

 blade rather large, about one-third the way between the surface 

 and the distinctly marked off and wide medulla. 



Abundant in the upper sublitoral zone. West coast of Whid- 

 bey Island, Wash., X.L.G., Nos. 109!, 124!, 158!. C81! 



This is the plant figured by Kjellman (1889, pi. 2, f. 5) as an 

 example of a young specimen from Bering Island. It does not 

 seem to change its character with age and in general habit 

 resembles the similar form of L. saccharina. It is never divided 

 so far as our specimens go. The mucilage ducts in the stipe are 

 sometimes scanty above, but are always more or less abundant 

 below. Were it not for the very complete series of connecting 

 forms, it would seem ridiculous to refer this form to a digitate 

 species. 



Laminaria bullata f. subsimplex Setchell and Gardner f. 



nov . 



Stipe short, 4-8 cm. long, terete below, somewhat compi'essed 

 above, stout. Blade 50-150 cm. long, 10-15 cm. wide, very dark 

 and thick, usually with a more or less distinct row of bulla? within 

 each margin, particularly in younger plants, commonly entire or 

 split one-third or one-half the way down into two, or at most 

 few and broad segments. Mucilage ducts in the stipe, forming 



