The English flora - SeaweedAfrica

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*27(j ALGJE INARTICULATE. [Asperococcus.
scutate or composed of a mass of woolly fila merits. Frond cylindrical
orflat ; when fiat, nerveless (except in Haliseris), thin, entire
or divided, often fiabelliform. Fructification ; roundish-ovate,
pear-shaped or club-shaped seeds, enveloped in a pellucid case,
covering the surface, or scattered, or forming minute spots or trans-
verse lines. The seeds in most cases are produced beneath the epidermis,
through which they burst, and become prominent. Grev.
13. Chorda. Stackh. Sea Whip-lash.
Frond simple, filiform, cylindrical, with an interrupted cavity.
Root naked, scutate. Fructification ; external continuous
masses of pear-shaped seeds, fixed by their base. Grev.Alg.
Brit. p. 46. t. 7.—Name, chorda, a cord.
1. C. Filum, Lamour. (common Sea Whip-lash); frond cartilaginous
slimy cylindrical filiform attenuated at both extremi-
ties internally jointed externally not regularly constricted, spirally
twisted when old. Lamour.—Hooh. in Fl. Lond. N. S.
cum Ic. Grev. Alg. Brit. p. 47. t. 7— Scytosiphon Filum, Ag.
Sp. Alg. v. 1. p. 161. Fucus Filum, Linn.— Turn. Syn. Fuc.
^.339, Hist. Fuc. t. 96. E. BoL t. 2487 (3. Thrix ; frond
very slender almost capillary, 2—4 inches in length. Grev—
Fucus Thrix, Stachh. Ner. Brit. t. 12.
Abundant on the rocky shores of Great Britain, often in deep water.
©. Summer and Aut — From 1—20 feet long, " composed of a simple
fillet, one or two lines in breadth, spirally twisted into a filiform tube,
formed by the cohesion of its edges," (Carm.,) olive-brown, covered with
slimy, minute, conferva-like hairs. Fructification covering the surface
of old fronds with the pyiiform seeds. Capt Carmichael has likewise
found another kind of fructification, represented in the Flora Londinensis
and consisting of sessile, ovate capsules, scattered among clavate
articulated filaments.
2. C. lomentdria, Grev. (jointed Sea Whip-lash); frond membranaceous,
the transverse septa remote and at irregular intervals
accompanied with external constrictions, the interval some-
what inflated— Lyngb. Hydroph. Dan. p. 74. t. 18. Grev. Alg.
Brit. p. 48.
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Scytosiphon Filum, var. y. Ag. Sp. Alg. v. 1.
p. 162.
Rocks and stones in the sea; frequent in Devonshire, Mrs. Griffiths.
Near Belfast, Dr. Drummond. Miltown Malbay, Mr. Harvey.
Abundant both on the western and eastern coasts of Scotland, Dr.
Greville. ©. Summer and Aut.—3— 16 inches long; spurious dissepiments,
occasioning the apparent internal articulation, are at very unequal
and generally considerable distances from each other, externally
constricted in those places. Dr. Greville describes the fructification as
interrupted masses of cylindrical or somewhat clavate filaments, which
are in pairs ; each pair of filaments being connected by their bases.
14. Asperococcus. Lamour. Asperococcus.
Frond (simple) tubular, cylindrical or compressed, continu-