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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. personata, 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 ;
black.
color of the whole plant a very dark brown or nearly
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-