The English flora - SeaweedAfrica

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268 algjE inarticulate. [Facta.
Hist. Fuc. t. 90. E. Bot. t.V22\. Ag. Sp. Alg. v. 1. p. 95.
Grev. Alg. Brit. p. 15.
Rocky sea-shores, abundant. Spring and Summer. If .—This con-
tains far less salt than F. vesicidosus, and is consequently much less
esteemed for kelp. In Norway it is the food of cattle, sprinkled with a
little meal, according to Gunner. The Dutch cover their crabs and
lobsters with it, and say that it is preferable to F. vesiculosus, because
the mucus from the vesicles of the latter ferments and soon becomes
putrid. Captain Carrnichael observes that " this Fucus is never
burnt for kelp on the shores of Appin, being found less productive of soda
than F. nodosus and F. vesiculosus, the only species here used for that
manufacture. It is employed as manure, and with much benefit,
though its value endures but for a single season. It is found peculiarly
well adapted to potato culture, and when spread on the ground in winter
yields an abundunt crop of the very best hay. But if its application
be deferred till the time of planting, the former produce, though equally
abundant, is watery, ill-tasted, and unfit for the table, though it answers
well enough for seed. This remark equally applies to all the Algae,
which, under the general name of Cart-wracks, are rolled ashore by the
gales."
4. F. nodosus, Linn, (knotted Fucus); frond compressed
without a midrib subdichotomous branched in a pinnated manner,
vesicles remote, receptacles lateral distichous large pedunculated
roundish- pyriform.— Turn. Syn. Fuc. p. 252, Hist. Fuc.
t. 91. E. Bot. t. 570. Ag. Sp. Alg. v. I. p. 85. Grev. Alg. Brit,
p. 16. Halidrys nodosa, Lyngb.
Rocky shores, common. Winter and Spring. If .—This is the most
thick and coriaceous of any of our Fuci. It is said in the Hebrides to
be preferable to all other Fuci in the manufacturing of kelp, and passes
there under the name of kelp-wrack.
5. F. Mackdii, Turn. (Mr. Mackays Fucus); frond nearly
cylindrical subcompressed slender dichotomous the extremities
obtuse, vesicles elliptical solitary often wanting. Turn. Hist.
Fuc.p. 52. E. Bot. t. 1927. Ag. Sp. Alg. v. 1. p. 87. Grev.
Alg. Brit. p. 17. F. ?wdosus, y. Mackaii, Ag. Syst. Alg.
p. 275.
Sea-shore of Cunnemara, Ireland, Mr. J. T. Mackay. From Arisaig
on the west coast of Ross-shire, to Kyle Scough in Sutherland, and on
the eastern shores of the isles of Skye and of Lewis. If.— It is found among
stones and on mud and sand, but apparently not growing there; collected
into very dense tufts; the fronds 8— 10 inches long. Fructification unknown.
6. F. canaliculdtus, Linn, (channelled Fucus); frond linear
channelled destitute of midrib and vesicles dichotomous emarginate
at the extremities, receptacles terminal oblongo- cuneiform
turgid bipartite obtuse.— Turn. Syn. Fuc.p. 242, Hist. Fuc.
t. 3. E. Bot. t. 823. Ag. Sp. Alg. v. I. p. 96. Grev. Alg. Brit,
p. 18.
Abundant on rocks on the sea-shore. Summer and Autumn. If.—
6—7 inches long ; well distinguished by its small grooved fronds.
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