The English flora - SeaweedAfrica

Laurencia.] ALG.E INARTICULATE. 295
—Fucus amphibius, Huds. Angl. ed. 2.— Turn. Fuc. p. 391,
Hist. Fuc. t. 109. E. Bot. t. 1428. Plocamium amphibium,
Lamour.
Southern and eastern sea-coasts of England, chiefly in salt marshes
among Atriplex and other saline phaenogamous plants. N. Wales, Rev.
Hu; >Ji Davies. ©.? Summer.— 1— 3 inches high; a dubious plant as to
genus. Roth describes minute, axillary, roundish capsules, and lanceolate,
pod-like receptacles of granules as not uncommon. Mr. Turner
hinted at its affinity with Poli/siphoniafastigiata ,- and though there are no
real articulations, Dr. Greville considers it as a connecting link between
that plant and the Alga? Inarticulate. Its place of growth is remarkable.
I have gathered it abundantly at Cromer in Norfolk, growing in tufts
like Cladunia rangiferina, which it much resembles in ramification.
—
31. Bonnemaisonia. Ag. Bonnemaisonia.
Frond membranaceous, compressed or plane, filiform, much
branched, the branches pectinated with distichous cilia. Fructification,
sessile or pedicellate capsules, containing a cluster of
pyriform (compound ?) seeds, fixed by their base. Grev. Alg.
Brit. p. 106. t. 13.—Named in honour of M. Bonncmaison, a
French Algologist.
1. B. asparagoides, Ag. (Asparagus-like Bonnemaisonia) ;
frond compressed very mucli branched delicate ciliated with
distichous subulate ramuli, capsules alternating with these ramuli
and pedunculated. Ag. Sp. Alg. v. 1. p. 197.
—
Plocamium
asparag., Lamour.—Fucus asparag., Woodw. in Linn. Trans.
v.H.t.6. E. Bot. t. 571. Turn. Syn. Fuc. p. 364, Hist. Fuc.
t. 101.
On rocks and stones in the sea, rare ; Cornwall, Norfolk and Suffolk.
Bantry Bay and near Belfast. Abundant at Qnilty, Miltown Malbay,
Joshua Fenncll, Esq.— 0. Summer.— A delicate and very beautiful
plant, of a cellular texture. Mr. Harvey finds on this species a modification
of the capsule, which appears analagous to what Dr. Greville
describes on Laurencia jnnnatifida as " disciform rcccjitavlcs."
32. Laurencia. Lamour. Laurencia.
Frond cylindrical, filiform, between gelatinous and cartilaginous,
mostly yellowish or purplish-red. Fructification of two
kinds :— I. ovate capsules with a terminal pore, containing a
cluster of stalked pear-shaped seeds fixed by their base:—2. ter-
nate granules imbedded in the ramuli. Grew Alg. lint. p. K>8.
t. 14.— Named in compliment to a French Naturalist, M.