274 Puget Sound Marine Sta. Pub. Vol. 1, No. 25 



tapering, whip-like, solid below and hollow above, gradually getting 

 larger near the top but slightly constricted just below the nearly round 

 air-bladder; blades usually about twenty or more, coming from a single 

 blade by longitudinal splitting, in two groups on end of air bladder, 

 long and narrow, about three to eight meters long and five to fifteen cm. 

 wide; sori forming large dark brown patches on the blades. 

 Common in large beds along rocky shores. 



25. EGREGIA Areschoug 



1. Egregia Menziesii (Turner) Aresch. in Bot. Not. 1876. No. 3. 

 p. 66: (Fucus menziesii Turner, Hist. Fuc. p. 57.) Fig. 35 



Holdfast of many branching hapteres which in older plants form a 

 disc about one dm. in diameter; stipe nearly terete for about two to 

 four cm. and then dividing into several flattened strap-like branches, 

 stipe with its branches several meters long; blades many, along each 

 side of the branches, usually small and variable in form, of four kinds 

 as follows: (a) spatulate or ovate, (b) branched, (c) bladder-bearing, 

 and (d) short cuneate, sori-bearing. 



Near low tide mark on rocks of surf-beaten shores. 



26. MACROCYSTIS Agardh 



1. Macrocystis pirifera (Turner) Agardh. Sp. 1: p. 46. Fig. 36 



Holdfast rhizome-like, with many branching hapteres ; stipe several 



to many meters long, branched into several long unequal parts ; blades 



many on the upper part of the plant, with wrinkled surfaces and serrate 



edges ; bladders many, one on the base of each blade except the terminal 



ones. 



A large kelp forming beds along the rough rocky shores near Neah 



Bay (11). Occasionalh^ found drifted ashore on the islands of Puget 



Sound. 



27. FUCUS (Tournefort) Linnaeus 



Holdfast a disc; stipe cylindrical, gradually merging into the flat- 

 tened blade-like body ; branches dichotomous, flattened, ribbed below, 

 often plane above, rarely with air bladders ; antheridia and oogonia on 

 the same plant, in sunken conceptacles in terminal receptacles ; oogonium 

 with eight eggs. 



KEY TO SPECIES 



A. Receptacles broad, swollen. 1. F. eimnescens 



AA. Receptacles long, narrow, flattened. 2. F. inflatus 



