The English flora - SeaweedAfrica

322 ALGlE CONFERVOIDEiE. {Cladostephus,
1. L. fluvidtilis, Ag. (River Lemania); filaments branched
olive-green torulose attenuated, intervals between the swellings
cylindrical much longer than they are broad. Hook. Fl. Scot.
P. II. p. 84. Ag. Sp. Alg. v. 2. p. 4 Nodularia fluviatilis,
Lyngb. Hydroph. Dan. p. 99. t. 29.— Chantransia fluviat, De
Cand.—Polyspermia fluviat., Vouch.— Conferva Jluviat., Linn.
—Dillw. Conf. t. 29. E. Bot. t. 1763.—Dill, Muse. t. l.f. 47.
Rocky beds of rivers, chiefly in mountainous countries. © . Spring
and Summer.—From 6 or 8 inches, occasionally to a foot in length, according
to Mr. Dillwyn, and frequently covering the rocky beds of subalpine
streams with a dark olive-coloured mass.
2. L. torulosa, Ag. (beaded Lemania) ; filaments nearly simple
moniliform.—Ag. Act. Holm. 1814, t. 2. f ].— Conferva torulosa,
Roth.—Dillw. Conf. Synops. p. 77. t. F. Dill. Muse.
t. l.f. 48.— C. fluviatilis, (3. torulosa, Both, Cat. v. 1. p. 200.
E. Bot. t. 1763.
Mountain-streams, near Ludlow, Dillenius. Anglesea, Rev. H. Davits.
—I fear the more or less beaded appearance of the fronds will hardly
afford a permanently distinguishing character between this and the pre-
ceding.
Div. II.
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CONFERVOIDE^E. 1
Plants filamentous, really or apparently articulated (destitute of
definite gelatine). Gen. 56—84.
Tribe XIV. Ectocarpe^:.
Plants olivaceous or virescent, marine. Fructification monce-
cious; external capsules, and globules in swollen ramuli.
56. Cladostephus. Ag. Cladostephus.
Filaments cartilaginous, inarticulate, whorled with short arti-
culated ramuli, olivaceous. Fruit double ;— 1. ovate capsules furnished
with a terminal pore; 2. granules imbedded in the apices
of the ranadi.—Name, from zXa^og, a branch, and c-ntpog, a
crown; in allusion to the ichorled ramuli.—A small and natural
genus ; the Dasytrichia of some French writers.
1. C. verticilldius, Lyngb. (ichorled Milfoil Cladostephus);
ramuli regularly whorled sub- distant mostly forked. Lyngb.
Hydroph. Dan. p. 102. t. 30. Hook. Scot.—C. Myriophyllum,
Ag. Sp. Alg. v. 2. p. 10. Conferva vertic, Dillw. Conf t.55. E.
Bot. t. 1718 and t. 2&l.f. 2.
In the sea, on rocks and corallines, frequent.—Filaments 3— 9 inches
high. Capsules unknown. Mrs. Griffiths sends us individuals of this
and the following species, in which some of the apices are minutely
sphacelate and granuliferous. We find a similar appearance on Irish
specimens.
2. C. spongiosis, Ag. (Sponge-like Cladostephus); ramuli ir-
1 By W. H. Harvey, Esq.
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