The English flora - SeaweedAfrica

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386 alg.e gloiocladea:. [Mesogloia.
branched filiform, branches pinnate opposite, ramuli numerous
irregular obtuse. Ag. Syst. Alg. p. 50, but not Ulva rubra,
Huds.
Portland Island and near Poole, Dorset, Hudson. Devonshire, Mrs.
Griffiths. Bantry bay, Miss Hutching. Lossiemouth, Mr. Brodie.—
Frond excessively branched, slender, filiform ; the branches short,
patent, gradually shortening upwards, so as to form a lanceolate outline
: famuli abundant, 1— 4 lines long, divaricato-patent, obtuse, substance
tender, gelatinous ; colour pale-red. " The structure is very remarkable
: the frond appears to be made up of tufts of fibres, radiating
from a centre, each tuft, when separated in water under a glass, resem-
bling a double Aster or sea Anemone. In the centre of the petal-like
fibres, are masses of purplish grains." Mrs. Griffiths in litt.—My friend,
G. A. W. Arnott, Esq., has favoured me with the following note on this
species. " Agardh has most erroneously referred to Ulva rubra, Huds.
as the type of this species ; of that, however, the E. Bot. figure is a sufficiently
accurate representation ; and I am confirmed in this opinion, by
a specimen which is in the late Mr. Brodie's herbarium, now belonging
to me, which was given by Sir T. Frankland to Mr. Brodie, and
declared by him to be Hudson's plant. Now the U. rubra, Huds. and
E. Bot., is a mere state of Halijmenia ligulata.—At one time, I was
inclined to suspect that Agardh had in view not U. rubra, but U. rubens,
Huds.; but a specimen from Sir T. Frankland in Brodie's herbarium,
proves that almost forgotten species to be Mesogloia vermicidaris. Ag."
3. M. purpurea, Harv. (purple Mesogloia); frond attenuated
at base, branches distichous linear-fusiform elongated simple
nearly bare of ramuli.
Sidmouth, Mrs. Griffiths.— 1—2 feet high, robust, deep purple-red,
staining fresh-water pink. Stem subsimple, irregularly branched
branches subalternate, distichous, long, simple, patent, constricted at
the base, attenuated to a fine point. " Substance tender, gelatinous and
slippery to the touch, not so elastic as M. vermicidaris." Airs. Griffiths
in litt,
4. M. coccmea, Ag. (moniliform rose-red Mesogloia); frond
much branched, branches moniliform irregularly dichotomous
attenuated, ramuli numerous crowded round the apex subattenuate.-^-^.
Syst. Alg. p. 51. Rividaria verticillata, E. Bot.
t. 2466.
Southern coasts of England and Ireland, very rare. Brighton, Mr.
Borrer. Bantry Bay, Miss Hutchins. Sidmouth, Mrs. Griffiths and
Miss Culler. — 2— 6 inches high, fine rose-red, very gelatinous and delicate.
The branches and ramuli are moniliform, in consequence of the
whorls of filaments forming the periphery being sub-distant.
5. M.? capilldris, Ag. (capillary rose-red Mesogloia); frond
tubular, branches opposite attenuated at base, ramuli short very
slender alternate
Fucus capillaris,
flexuose subulate.
Turn. Hist. Fuc. t.
Ag. Syst. Alg. p. 51.
31.— Gloiosiphonia ca-
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—
—
— ;
pillaris, Carm. MSS. (cum ic. eximia).
South coasts of England, Mrs. Griffiths. Bantry Bay, MissHutchins.
Appin, extremely rare, Capt. Carmichael.—5—6 inches high, much
branched ; main filaments often a line in diameter; branches and ramuli
very slender and flexuose.