FROM THE NORTH-WEST AMERICAN COAST. 167 
widened-upward stipe and less wavy frond ; the mature ones from 
L. digitata in the stipe, &c. 
17. LAMINARIA APODA, n.s. Stipite nullo !, lamina basi calloso-radi- 
cante late cordata coriacea demum apice in.lacinias numerosas plus 
minus fissa v. omnino multipartita, radice ramosissima. 
Rocks between tide-marks, Fuca Strait, Dr. Lyall. 
Frond originating in a callus (or bulbiform stipe) attached to 
the rocks by many branching fibres, as in other species. Lamina 
sessile, a foot wide or more, 1-2 feet long (or more ?), cordate at 
base, ovate or ovato-lanceolate in outline, coriaceous, at first pro- 
bably undivided, but in all our specimens more or less split, as in 
L. digitata. Some are cleft quite to the base into many narrow 
segments. A very remarkable species, characterized by the ab- 
sence of stipe, unless the hardened and thickened base of the 
lamina be so called. Some specimens of L. dermatodea have very 
short stipites, not more than half an inch long ; and such serve to 
link our present plant with the stipitate species. 
18. Laminaria fascia, 4g. ; Harv. Ner. Bor. Amer. i. p. 91. 
Esquimalt and Fuca Strait, Dr. Lyall & C. Wood. 
19. Striaria attenuata, Grev. ; Harv. Ner. Bor. Amer. (Suppl.) iii. p. 123. 
Orcas Island, Vancouver, Dr. Lyall. 
20. Chorda lomentaria, Grev. ; Harv. Ner. Bor. Amer.i. p. 98. 
In rock-pools, Esquimalt and Fuca Strait, Dr. Lyall. 
21. EcrocAnPUs oviGER, n.sp. Filis (3-5-uncialibus) decomposito- 
ramosissimis viridibus, ramis ramulisque alternis v. secundis erectis, 
ultimis longiusculis vagis, sporis ovoideis ad ramos subsessilibus szpe 
secundis. . 
Hab. Stems of Nereocystis ; Esquimalt, Dr. Lyall. 
This has the aspect of E. littoralis, Ph. Br. (E. firmus, J. Ag.), 
but differs in the fruit, which is abundant in our specimens, and 
very like that of E. granulosus, from which our £. oviger differs 
1n ramification. 
22. Ectocarpus littoralis, Ner. Bor. Amer. i. p. 139. 
On rocks and Fuci, Fuca Strait and Esquimalt, Dr. Lyall & C. Wood. 
23. Ectocarpus siliculosus, Lyngb.; Ner. Bor. Amer. i. p. 139. 
On stems of Nereocystis, Esquimalt, Dr. Lyall. 
24. Ectocarpi sp. 
Nanaimo, on rocks, Dr. Lyall. 
Not in fruit, and overgrown with parasites; may be a var. of 
E. littoralis. 
LINN. PROC.— BOTANY, VOL. VI. N 
