The English flora - SeaweedAfrica

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270 ALGiE INARTICULATE. [Lichina.
Tribe II. Lichinee.
Marine plants, of a blackish-green colour, changing to deep black
on exposure to the air, of a cartilaginous substance and fibrous tex-
ture. Frond flat or cylindrical, minute, branched in a dichoto-
vious or subpalmated mamier. Fructification terminal or nearly
so, composed of capsules furnished with a pore, and filled with
a colourless gelatinous mass of very fine filaments, among which
pellucid oval or oblong seeds are disposed in many radiating
moniliform series. Grev.
6. Lichi'na. Ag. Lichina.
Frond cartilaginous, blackish-green, dichotomous. Fructifi-
cation; roundish capsules of the same colour, containing radiating
moniliform lines of pellucid seeds, imbedded in a gelatinous
mass of filaments. Grev. Alg. Brit. p. 21. t. 6.—Named from
its similarity to some of the Lichen family, among which, indeed,
Acharius had placed it.
1. \j.pygmcea, Ag. {dwarf Lichina); frond between flat and
compressed, capsules globose. Grev.—Ag. Sp. Alg. v. I. p. 105.
Hook. Fl. Scot. P. IL. p. 96. Grev. Alg. Brit. p. 22. t. 6, Crypt.
Fl. sub t. 219. Fucus pygmaus, Lightf. Scot.- p. 964. t. 32.
Turn. Syn. Fuc. p. 258, Hist. Fnc. t. 294. / a—h. E. Hot.
t. 1332 F. pusillus, Huds.— F. lichenoides, Good, et Woodiv.
On rocks which are exposed and almost dry at low water, frequent.
Summer and Autumn. If.—About half an inch high. This and the
following have almost the habit, but not the
among the Lichens.
texture, of Stereocaulon
2. L. confinis, Ag. (least Lichina); frond cylindrical, capsules
terminal oval. Grev.—Ag. Sp. Alg. v. I. p. 105. Grev. Alg.
Brit. p. 23. t. 6, Crypt. Scot. t. 22 1 . L. pygm&a, /3. minor,
Hook. Fl. Scot. P. II. p. 96. Fucus pygmazus, /3. minor, Turn.
Hist. Fuc. t. 204. f. i— o.—Lichen confinis, Ach. Prodr.—E. Bot.
t. *2blb.— Stereocaulon confine, Ach. Meth.
On rocks partially covered only at high tides, chiefly in Scotland.
Dunbar. Ardthur, Capt. Carmichoel. Caroline Park, Dr. Greville.
Colvend, Dr. Richardson, &c.— Summer and Autumn. If..—My own
observations have led me to consider this as a mere variety of the preceding,
whose different appearance is due to a more frequent exposure
to a dry atmosphere. Its height is scarcely 2 or 3 lines.
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Tribe III. Laminarie.
Plants all marine, of an olive-brown or olive-green colour, becoming
somewhat darker on exposure to the air, varying from cori-
aceous to membranaceous. Frond with a lobed or fibrous root,
more or less stipitate andforming a plane, entire or cleft expansion,
in a few cases, furnished with one or more ribs. Vesicles none,
{except in the genus Macrocystis,) unless the hollow stem of