1923] Setchell-Gardner: Melanophyceae 637 



Schrader, Observations on Alaria nana, 1903, p. 157, pis. 23-27; 

 Yendo, Monogr., 1919, p. 118, pi. 13, figs. 1-3. Alarm praelonga f. 

 nana, Collins, Holden and Setchell, Phyc. Bor.-Amer. (Exsicc), no. 

 1292. Alaria marginata f. nana Collins, Mar. Alg. Vancouver Isl., 

 1913, p. 110. 



The above locality is the only one in which this species is certainly 

 known to occur. There are plants, however, growing on the central 

 California coast in similar habitats which seem to be closely related to, 

 if not identical with, the Port Renfrew plant. Specimens have been 

 distributed from Golden Gate, San Francisco, in Collins, Holden and 

 Setchell, Phyc. Bor.-Amer.. no. 1292, under A. praelonga f. nana. 

 Yendo (1919, p. 118, et seq.) considers this a distinct species on 

 account of the shape of the sporophylls. We are still of the opinion, 

 in which Kjellman agreed, that it is very closely related to A. 

 praelonga. 



2. Alaria praelonga Kjellm. 



Stipe 5-8 cm. long, terete ; rhachis 3-5 cm. long, larger than the 

 stipe, somewhat flattened, passing almost directly into the blade, 

 muriculate ; blade up to 4 m. long, 7-10 cm. wide, with narrowly 

 cuneate base, plane, smooth, shining, rigid, dark brown color; costa 

 more or less prominent, narrow, in cross-section slightly enlarged at 

 the ends or elliptic-linear, passing abruptly into the blade ; sporophylls 

 numerous, fasciculate, distinctly petiolate, oblong-lanceolate to linear- 

 lanceolate, 8-10 cm. long, 1-2 cm. wide, plane, rigid; sori covering 

 nearly the entire surface. 



Growing in the lower littoral belt. From St. Paul Island, Bering 

 Sea, Alaska. 



Kjellman, Om Beringh. Algfl., 1889, p. 38, Tab. 4, figs. 1-4. 



Alaria praelonga Kjellman is a much misunderstood species and 

 seemingly needlessly so. Relying upon Kjellman 's opinion (in litt.), 

 we have classified under this name such diverse species as A. marginata 

 Post, and Rupr. and A. lanceolata Kjellm. The type, both as repre- 

 sented by the type specimen and by Kjellman 's figure, is a plant with 

 a short stipe, short narrow sporophylls, a long, moderately broad 

 blade, very long and narrowly attenuated at the base. The figure of 

 Yendo (1919, pi. 4) seems to have broader as well as longer sporo- 

 phylls than the type, with the sporophylls broader at the base. We 

 have only a single imperfect plant which, in the light of Kjellman 's 

 figures and type specimen, we venture to refer finally to this species. 



