The English flora - SeaweedAfrica

342 ALGM CONFERVOIDE^E. [Calithamnion.
opaque, filled with jointed veins. Capsules elliptical, rather large, secund,
2— 4 on the pinnae toward the base. Favellce ovate, large, dark-red, binate
or clustered. Articulations in the stem and branches 4— 5 times, in the
branchlets 3—4, and in the pinnules 2— 3 times, longer than broad.
Much confusion has been created respecting this species, by the discrepancies
between the figures in English Botany and Dillwyrfs Conferva,
though both plates are stated to have been taken from specimens, from
the same locality, and each compared with the original plant of Roth.
The E. Bot. figure is much the best of the two, though neither precisely
agrees with our plants or with any other species that L am acquainted
with. Agardh asserts, but 1 do not see with what reason, that
the plant described in the II. vol. Roth Cat. Bot. (which was that sent
to Mr. Turner and compared by him with the Yarmouth specimens),
differs from the species published by Roth, under the same name, in his
III. vol.; which latter, Agardh holds to be the true Ceramium roseum.
11. C. byssoides, Arn. MS. (byssoid Calitliamniori); filaments
slender flaccid entangled, plumules flexuose and byssoid linearlanceolate,
lower pinnae subsimple or bi-trifid, upper subcorymbose
alternately multifid very erect, articulations of the branches
8, of the pinnae 4—5 times longer than broad, capsules sessile
solitary on the pinnae (not in the axils).
Whitsand bay, G. A. W. Arnott, Esq. Devonshire, Mrs. Griffiths.—
2—3 inches long, much branched, entangled, and very slender, axils
acute, plumules crowded in the upper part. [Colour a fine rosy purple.
Capsules elliptical, sessile or minutely pedicellate, solitary on the ultimate
pinnules near the base. Habit very much that of C. corymbosum,
but differing in the alternate, not dichotomous, branching of the plumules
and the position of the capsules.
12. C. polyspermism, Ag. (many-fruited Calithamnion); slender
membranaceous loosely branched, plumules lax linear-oblong,
pinnae short patent acute spine-like, articulations of the branches
4—5 times, of the pinnae twice, as long as broad, capsules lining
the inner faces of the pinnae.
—
Ay. Sp. Alg. v.2.p. 169.
—
—
Ceram-
ium Felixii, Gaillon ?
Pier, Torquay, Mrs. Griffiths. Appin, Captain Carmichael. Mount
Edgecombe, Mr. Arnott.— 1—3 inches high, somewhat naked or with
short branches at the base, much and somewhat flabellately branched
upwards ;
upper branches elongate, their lower half set with short spine-
like ramuli, above alternately plumulate, plumules pinnate, pinnae
nearly of equal length throughout, simple, the upper ones in old specimens
occasionally furnished with a new series of pinnae. Colour dull
rose-red. Articulations of the stem and main branches swollen at the
joints, with a very narrow tube. Capsules profuse, sphaerical. Favellce
large, roundish or ovate, binate. In drying, it scarcely adheres to paper.
A very distinct and beautiful species, well marked by its narrow plumules
and equal spine-like pinnae.
13. C. tetricum, Ag. (rope-like Calithamnion); rigid, branches
densely ramulose hairy below, plumulate above, plumules
crowded quadrifarious oval simply pinnate, pinnae acute basally
attenuated erecto-patent, articulations 2—3 times longer than