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P l a t e CLXXX.
CLADOPHORA RUPESTRIS, Kg.
Gen. Ci-iAii. Filaments green, jointed, attached, uniform, branched. Fruit,
aggregated granules or zoospores, contained in the joints, having,
at some period, a proper cdiary motion. Cladophoea [Kiitz.),—from
(cXaSor, a branch, and fi>op€a, to bear.
C ladophoea filaments capillary, rigid, dark green, straight,
tufted, bushy; branches erect, crowded, densely clothed with appressed.
opposite, or tufted, subulate ramuli ; articulations tlrree or fopr times
longer than broad.
Cladophoea rupestris, Kütz. Phyc. Gen. p. 270.
Conferva rupestris, Linn. Sp. PI. p. 1687. LIuds. FI. Any. p. 601. Lightf. FI.
/Scoii. p. 994. With. Br. PI. Yoi.iY. p .\4 9 . FI' . Ban. ti 9- 48. Both, Cat,.
Bot. vol. ii. p. 238. Billw. Conf. t. 23. F. Bot. t. 1699. Ag. Syn. p. 91.
Lyngb. LLyi. Ban. p. 156. t. 54. Ag. Syst. p. 117. ILarv. in Hook. Br. FI.
vol. ii. p. 357. Wyatt, Alg. Banm. no. 95. Harv. in Mack. FI. Hib. p a rt 3.
p. 239. Harv. Man. p. 136.
Conferva glauca. Both, Cat. Bot. vol. ii. p. 208. t. 6.
Conferva vhgata, Both, Cat. Bot. vol. i. p. 195.
Var. S- distorta ; tufts rooting in the mud, depressed ; filaments short,
much curled, and matted together ; ramuli squarrose.
H a b . On rocks in the sea, between tide-marks ; also beyond the limits of
low water. Annual. Summer and autumn. Abundant on all the
British shores. S- On submarine peat, at Birtuibui Bay, Connemara,
M r. Me Calla.
Geogr. D is t r . Atlantic shores of Europe. Baltic Sea.
D esc r . Boot (except in var. S-) scutate. Filaments densely tufted, from four to
six or eight inches in length, thicker th an human hair, very m uch branched.
Branches virgate, long, straight, repeatedly divided, set with opposite or
quaternate, very erect, lesser branches, which are more or less furnished
with ramuli. Bamuli closely appressed, subulate, tapering to a fine point,
opposite, or occasionally alternate, or three or four rising from the same
articulation, the pairs more or less approximating together. Arliculations
from three to five times longer than broad, slightly contracted at the dissepiments,
filled with a dense endochrome. Substance rigid, not adhering
to paper iu di-ying. Colour a beautiful dark green, sometimes, especially
when growing in deep water, reflecting glaucous tints.
A very beautiful plant, wben well grown, common on all our
rocky shores, and extending througb tbe whole of tbe littoral zone,
even into tbe belt of the LaminaricE. Specimens gradually increase
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