278 University of California Publications. [Botany 



Alaria fragilis Saunders. 



In the sublitoral zone. Kukak Bay, Prince William Sound, 

 and Glacier Bay, Alaska, Saunders (1901, p. 425). 



It certainly seems to us that this plant is likely to prove to be 

 nothing more than a variety of A. Pylaii with a somewhat 

 elongated stalk, such as certainly does occur among plants of that 

 species. The distant sporophylls as well as their shape is due to 

 the youth of the plant. 



Alaria fragilis f. bullata Saunders. 



With the last. Glacier Bay, Alaska, Saunders (1901, p. 42.5). 

 Apparently only a state of the last. 



Alaria valida Kjellman and Setchell sp. nov. Plate 21. 



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

 length stout aud showing rings of growth, reaching a diameter 

 of 13 mm., showing also a well developed cork layer. Rhachis at 

 first short, becoming very much elongated, up to 15-20 cm., 

 somewhat flattened, obtuse on the edges, stout like the stipe. 

 Sporophylls linear lanceolate, 15-50 cm. long and 3-6 cm. wide, 

 with margins undulate and all except the narrow margins aud a 

 small portion of the tip occupied by the sorus. Blade long, up 

 to 3-4 meters, 15-25 cm. wide, tapering very gradually to the 

 base, with broad midrib <'22 mm. wide) which is little prominent 

 and abruptly narrowing towards each end in cross section. 



This belongs to the group of species with broad midribs 

 and is fairly nearly related to A. laticosta Kjellman, but differs 

 from that species chiefly in the stouter stipe and rhachis and the 

 longer and broader sporophylls. Its relation to A. marginata 

 P. & R. is still to be settled. 



In the sublitoral zone. Unga, Alaska, A.A.L., No. 5059!; 

 west coast of Whidbey Island, Wash., N.L.G., No. 111! 



Specimens of the above collections were sent to Professor 

 Kjellman, who recognized them as belonging to a new species. 

 We have drawn up the description and given the name to the 

 plant on account of the broad stipe and rhachis. In the type,, 

 the stipe is short, but in the following form it is much longer. 



