1925] Setchell-Gardner: Melanophyceae 643 



growing in the sublittoral belt, but one of us (Setchell) has observed 

 it growing in abundance high up in the littoral belt at Amaknak 

 Island, Alaska. 



Kjellman, Om Beringh. Algfl., 1889, p. 39, pi. 5, fig. 1-3 ; Saunders, 

 Alg. Harriman Exp., 1901, p. 426, pi. 53(?) ; Setchell and Gardner, 

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

 1912a, p. 162; Collins, Holden and Setchell, Phyc. Bor.-Amer. 

 (Exsicc), no. XLIV. Alaria laticosta Saunders, Alg. Harriman Exp., 

 1901, p. 42.5, pi. 55 (not of Kjellm.). Alaria doUchorhachis Collins, 

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



The Alaria' lanceolata of Kjellman, judging from his illustration 

 and a photograph of his type, seems to be a plant with short stipe, 

 crowded long and narrow sporophylls, with the blade fairly broad 

 and narrowed to a moderately broad cuneate base. On the authority 

 of Kjellman, we remove to this species the specimens distributed as 

 A. dalichorhachis under no. XLI of the Phycotheca Boreali- Americana. 

 The only difference noted by Kjellman in the case of these plants is 

 that the blade is not so dark as in his type specimens. We also feel 

 inclined to refer here the plant figured by Saunders {loc. cit.) as 

 Alaria laticosta, w-hich has, however, a much broader midrib. Yendo 

 refers Saunders' plant to A. niacroptera (Rupr.) Yendo, but the 

 figures of that species as given by Yendo show a plant with different 

 sporophylls (too broad) and wath the base of the blade long and 

 narrowly attenuated. The Alaria:. lanceolata Saunders {loc. cit.) has 

 shorter sporophylls than is characteristic for this species. 



8. Alaria valida Kjellman and Setchell 



Stipe short, 1-5 cm. long, cylindrical, at first slender, but at length 

 stout and showing rings of growth, reaching a diameter of 13 mm., 

 showing also a well developed cork layer ; rhachis at first short, becom- 

 ing very much elongated, up to 15-20 cm., somewhat flattened, obtuse 

 on the edges, stout like the stipe ; blade up to 3-4 m. long, 15-25 cm. 

 wide, tapering very gradually to the base, midrib 16-22 mm. wide, 

 little prominent and abruptly narrowing toward each end in cross- 

 section ; sporophylls linear lanceolate, 15-30 cm. long, 3-6 cm. wide, 

 with margins undulate and all except the narrow margins and a small 

 portion of the tip occupied by the sorus. 



In the sublittoral belt. From Unga, Alaska, to Puget Sound, 

 Washington. 



