600 University of California Publications in Botany [Vol. S 



sublittoral zone" and he also remarks (lor. tit.) that in his plants 

 "the stipe is thick and abundantly supplied with mucilage canals as 

 are the broad flattened rhizoids. " The statements, "thick stipe," 

 "broad flattened rhizoids," and "mucilage canals" are indications 

 that he must have located and described some other plant. We have 

 been unable to locate a complete specimen of Saunder's plant. The 

 plants from Sitka, upon which we founded L. per sonata, have no 

 mucilage ducts in the stipe, another indication that they are different 

 from those collected by Saunders and are, therefore, different from 

 Agardh's L. solidungula. 



We have searched carefully for L. solidungula in our territory 

 since J. G. Agardh calls attention to Ruprecht's statement (1851, p. 

 351) that he found a young abnormal specimen of L. latifolia Ag. (a 

 form of L. saccharina) with a scutate holdfast among his Ochotsk 

 specimens. Kjellman does not mention it among his Bering Sea plants, 

 but Saunders (Joe. cit.) credits it to Yakutat Bay, Kukak Bay, and 

 Popof Island, Alaska. Possibly both Ruprecht 's and Saunders ' plants 

 may prove to be the same as our Sitkan specimen. Our Sitkan plant 

 probably belongs to the Saccharina-gvowp, although the blade is some- 

 times broad and deeply split (as in the case of the older plants in our 

 illustration, plate 61). 



7. Laminaria cuneifolia J. Ag. 



Plate 59a, b, and plate 60 



Holdfast of a few, stout, branched hapteres ; stipe usually short and 

 flexuose, terete at the base, flattening above into the blade, 6-10 cm. 

 long, 3-4 mm. diam., with moderately large mucilage ducts in a circle 

 near the surface ; blade entire or with a few lacerations at apex, usually 

 cuneate at the base, but at times even cordate, becoming linear, very 

 variable in size, about 6-9 dm. long, 7-12 cm. wide, coriaceous, with a 

 row of prominent, transverse bullae within each margin, in some only 

 at the base, in others extending to the apex, with abundant large 

 mucilage ducts ; color of the whole plant a very dark brown or nearly 

 black. 



Growing in a narrow belt along low-tide line. St. Lawrence Island, 

 Alaska, to Puget Sound, Washington. 



J. G. Agardh, De Lamin., 1867, p. 10. Laminaria bidlata Kjellman, 

 Om Beringh. Algfl., 1889, p. 46, pi. 2, figs. 5-9 ; Saunders, Alg. Harri- 



