IV. 
LAMINARIACEiE. — Laminaria. 
91 
stipe. This flattened portion gradually lengthens, assuming the normal form of the 
species, and carries at its apex the old leaf, which is about to be changed. The 
point of cohesion of this leaf becomes less firm, and gradually the now decayed 
lamina falls off, leaving the young frond to crown the stipe in its place. 
1. Laminaria Fascia , Ag. ; stipe very short, slender, flattened, expanding gradu- 
ally into a membranaceous, broadly oblong, wedge-shaped, lanceolate, or linear 
frond. Harv. Phyc. Brit. t. 45. Lam. Fascia , coespitosa et debilis , J. Ag. Sp. Alg. 
vol. l,p. 129-130. Phyllitis Fascia et debilis , Kutz. Sp. Alg. p. 566. 
Hab. On rocks and stones, near low- water mark. Fort Hamilton, N. Y. Copt. 
Pike and Mr. Hooper. Halifax, W. H. H. (v. v.) 
Foot, a small disc. Stipe as thick as hog’s bristle, half an inch long, filiform at 
base, compressed upwards and gradually widening into the cuneate base of the 
frond. Lamina very variable in form, 2 — 12 inches long, from a quarter inch to two 
inches broad, sometimes abruptly cuneate at the base, sometimes much attenuated, 
either lanceolate, oblong, or linear, or oblong-ovate ; in some specimens remarkably 
obtuse, in others tapering more or less to the point. Margin waved or flat. 
Colour when growing a clear chestnut brown, changing to greenish olive in drying. 
I can by no means distinguish from one another the three species of Prof. 
Agardh, above referred to this. The form of the frond is most variable, even in 
the same tuft, and the gradations between the several forms so complete, that if you 
examine a sufficient number of specimens not specially selected as typical, there can 
be no difficulty in tracing the narrowest and most cuneate into the widest and most 
ovate. L. Fascia is widely distributed, being found also on the Atlantic and Me- 
diterranean shores of Europe ; and at the Falkland Islands in the Southern Atlantic. 
2. Laminaria lorea , Bory ; stipes rising from a branching root, flat, winged 
above, dilating into a linear-ensiform, membranaceous, very long frond, entire or 
cleft at the apex. J. Ag. Sp. Alg. vol. 1, p. 130. L. tcmiata , Post, and Bupr. 
t. 38, f. (fide Ag.). L. saccharina, var. Kutz. Sp. Alg. p. 574. 
Hab. Shores of Newfoundland, Despreaux. 
Stipe 3 — 4 inches long, flat from its origin, dilated above, and winged with a thin- 
ner margin. The wing of the stipe is expanded into the lamina of the frond, the 
stipe itself (or its thickened portion) being continued in furrows through the lower 
part of the lamina. Lamina several feet long, an inch and a half wide, at each end 
much attenuated. J. Ag. 1. c. 
I am not acquainted with this plant, said to be a very distinct species by Agardh, 
from whom I copy the above description. 
