[429] THE ALG^E Ip3 



Laminaria bongardiana P. & R. 



Abundant in the sublittoral zone, from Sitka to Shumagin Islands. 

 Sitka (186) ; Prince William Sound; Kukak Bay (337). 



Laminaria solidungula J. Ag. 



Occasional in the sublittoral zone from Yakutat Bay northward and 

 westward. Yakutat Bay (260) ; Kukak Bay (337) ; Popof Island 



(387^)- 



All specimens collected were sterile and of small size ; the blade 

 averages 6 dm. long, 3 dm. broad; the stipe is about 17 cm. broad, 

 firm, thick and abundantly supplied with mucous canals as are the broad 

 flattened rhizoids which are fused almost to the tips to form a disk- 

 like attachment. 



Laminaria cuneifolia J. Ag. 



Two specimens of this species were collected from a small rock on 

 Popof Island (387). The rock had apparently been washed up from 

 the sublittoral zone. The blade is very distinctly wedge-shaped, thin, 

 papyraceous, light olive-green, and very brittle in drying, quite regu- 

 larly wavy on the margin ; the stipe is black, very firm, rounded be- 

 low and slightly flattened above, 6-10 cm., the rhizoids are long and 

 slender, resembling those of L. saccharina. 



Laminaria saccharina (L.) Lam. 



Abundant in the sublittoral zone from Puget Sound to the Shumagin 

 Islands. Two forms were collected. 



Forma (a). Blade 300-800 cm. long, cuneate at base, 20-40 cm. 

 wide ; stipe 3-5 cm. long, texture thin, papyraceous or membranace- 

 ous, drying light-green; sori usually small, 1-3 dm., irregular, con- 

 fined to the upper part of the frond ; muciferous canals small, abun- 

 dant in blade and stipe. 



Glacier Bay (77); Sitka; Wrangell (63); Yakutat Bay; Cook 

 Inlet; Shumagin Islands. 



Forma (3). Blade 50150 cm. long, 5-10 cm. wide ; stipe 1-3 cm. 

 long, submembranaceous to coriaceous ; sorus occurring as a band in 

 the central part of the blade, extending from a few centimeters to two- 

 thirds the length of the blade ; muciferous canals abundant in blade. 



Prince William Sound (259^ ); Kukak Bay (337). 



Hedophyllum sessile (Ag.) Setchell. (Plate LI.) 



Laminaria sessilis AG., Syst. Alg., p. 270. TILDEN, Am. Alg., 344. 

 This species was collected in the sublittoral zone in Yakutat Bay 

 the latter part of July. 



