644 University of California Publications in Botany [Vol.8 



Kjellman and Setchell, in Setchell and Gardner, Alg., N. W. Amer., 

 1903, p. 278, pi. 21. Alaria. grandifolia J. Ag., Collins, Holden and 

 Setchell, Phyc. Bor.-Amer. (Exsicc.), no. CV (not J. Ag.). 



Alaria valida f. longipes S. & G. 



Stipe long, 8-20 cm. in length, not including any of the rhachis; 

 otherwise as in the type. 



With the typical form on the west coast of Whidbey Island, 

 Washington. 



Setchell and Gardner, Alg. N.W. Amer., 1903, p. 279. 



Alaria, valida seems to be a distinct species, as was suggested by 

 Kjellman. This is also the opinion of Yendo (1919, p. 118). At one 

 time Setchell (1908a;, p. 11) was inclined to unite it with A. gramdifolia 

 J. Ag., but that species has the blade broadly cuneate, almost oblong 

 at the base. Yendo (1919, pp. 116, 118) states that Tilden's no. 521 

 (a specimen collected by De Alton Saunders on the shores of Monterey 

 Bay and presumably determined by him) is Alaria valida Kjellm. and 

 Setch. The specimen in our copy is Alaria. marginata, as we under- 

 stand it, and we have not seen anything referable to A. valida on the 

 California coast. 



9. Alaria fistulosa Post, and Rupr. 



Holdfast of numerous, irregularly branched hapteres; stipe 20-25 

 cm. long, 8-12 mm. diam., without mucilage ducts, terete below, much 

 flattened in the transition region, where the numerous sporophylls are 

 developed, passing imperceptibly into the blade, perennial; blade up 

 to 25 m. long and up to 9 dm. broad, cuneate at the base, with well 

 defined midrib 2-3 cm. broad, which is hollow and inflated at irregular 

 intervals, the inflations being distinctly separate; mucilage ducts 

 abundant ; color very dark olive brown ; cryptostomata absent. 



Growing often in great profusion on rock ledges and boulders in 

 the upper sublittoral belt. From Augustine Bay, Dall Island, to 

 the Bering Sea in our waters and extending to the Kurile Islands and 

 Japan on the Asiatic coast. 



Postels and Ruprecht, Illus. Alg., 1840, p. 11, pi. 16; Saunders, 

 Alg. Harriman Exp., 1901, p. 246, pi. 57 ; Setchell and Gardner, Alg. 

 N.W. Amer., 1903, p. 275; Setchell, Kelps of the U. S. and Alaska, 

 1912a, p. 163 ; Kibbe, Structure of Alaria fistulosa, 1915, pp. 43-57, pis. 

 7-9 ; Yendo, Monogr. Alaria, 1919, p. 76, pi. 1. 



Two forms have been segregated : 



