The English flora - SeaweedAfrica

316 ALGjE INARTICULATE. [Bangia.
cum Ic.— Solenia percursa, Ag. Syst. Alg. p. 187. Scytosiphon
compressus, y. co?ifervoideus,
t. 15. /. B. 4—6.
Lyngb. Hydroph. Dan. p. 65.
On the oozy sea-shore, above the half-tide level, and giving it a greenish
hue to an indefinite extent. Appin, common. Carm.
Summer.—This appears to me to be a very dubious
teromorpha.
0. Spring and
species of En-
50. Bangia. Lyngb. Bangia.
Frond flat, capillary, membranaceous, of a green, reddish or
purple colour. Fructification ; granules arranged more or less
in a transverse manner. Grev. Alg. Brit, p. 177.—Named in
honour of Hoffman Bang, a Danish Naturalist and Author of a
work entitled " Be usu Confervarum in CEconomia Natural'
—The proper place of this Genus is very doubtful. Most Botanists
arrange it with the Confervoidece, whence Dr. Greville
has removed it and brought it near to Ulva, on account of its
plane (though very narrow and filamentous) fronds. Mr. Harvey
would rather follow Agardh, referring it to an Appendix
of the Oscillatoriece, or to a family immediately after them.
1. B. fusco-purpurea, Lyngb. (brownish-purple Bangia);
elongated simple, filaments purple or brownish -purple, often
subtorulose straightish, granules about 5 in each fascia. Lyngb.
Hydroph. Dan. p. 83. t. 24. Grev. Alg. Brit. p. 177 x. fuscescens.
Conferva fusco-purpurea, Dillw. Conf. t. 92. E. Bot.
t.
(3. purpurea. Bangia atro-purpurea, Ag. Syst. Alg.
2055.
—
p. 76.— Conferva atro-purpurea, Both, Cat. Bot. v. 3. p. 208. t. 6.
Dillw. Conf. t. 103. E. Bot t. 2085.
On rocks and wood in the sea, about high-water-mark:—«• Dunraven
Castle, S. Wales, Mr. Young.—£. Chiefly in the south of England and
Ireland. Meadfoot, Devon, Mrs. Griffiths. Within the Citadel, Plymouth,
Mr. Sconce. Firth of Forth, Dr. Greville. 0. Spring, Summer.—
One to 3 or 4 inches in length. The var. /J., of a rich and deep
purple colour, is by far the most common with us.
2. B. cilidris, (fringed Bangia); filaments gregarious veryminute
simple straight compressed purple, granules binate glo-
bose. Carm. 3ISS. cum Ic.
On the old leaves of Zostera marina, Appin, Cajriain Carmichael.
0. Spring.— This, the minutest of all the Bangice, "grows on the
edges of the leaves in the form of a delicate pink-coloured fringe. Filaments
half a line in length, gelatinous, straight, compressed, rather torulose.
Granules large, globular, arranged in pairs." Carm.—The granules
are occasionally in a single series, when the filaments are only half their
usual breadth and the plant becomes a Splicer oplcea of Agardh {Harvey).
3. B. Lamindria?, Lyngb. (Laminaria Bangia); filaments
simple csespitose equal olive-green, granules minute arranged
in a double series of about 4. Lyngb. Hydroph. Dan. p. 84.
£.24.
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