F ln F
P la t e VI.
CLADOPHORA LANOSA, m t z .
Gen. Chae. Filaments green, jointed, attached,uniform, branched. Fruit-,
aggregated granules or zoospores, contained in the joints, having, at
some period, a proper ciliary motion.
Cladophoea lanosa; Filaments slender, short, yellow green, forming dense
globular tuft.s; branches virgate, erect, subdistant, straight, alternate
or rarely opposite; ramuli few, alternate or seound; axils very acute;
lower joints twice, upper six times, as long as broad.
Cl a d o ph o r a lanosa, Kiitz. Pliyc. Gen. p. 269.
Co n f e r v a lanosa , Roth. Gat. Bot. vol. h i. p . 291. t. 9. Sm. E. Bot. t . 2099.
Lynyb.JIyd.Dan. p . 160. t . 56. Bilho. Conf. t . E. Ay. Syst. Alg. p . 112.
Grev. FI. Edin. p. 316. H a n . in Hook. Br. El. vol. u. p . 358. Man. p . 138.
Wyatt. Alg. Banm. no. 194.
H ab. In the sea, on rocks, or, more frequently, on the larger Fuci. Frequent
on the shores of the British Islands.
G e o g r . D is t r . Northern Atlantic shores of Europe. Baltic sea.
D e s c . Tufts 1-2 inches in diameter, globose, made up of innumerable’’slender
entangled filaments radiating from a centre. Filaments stoloniferous below,
or sending out, here and there, irregular root-like imperfectly jointed processes
; branches few, straight and erect. Joints of the lower part of the
filament short, once or twice as long as broad; those of the upper branches
very long. When dried on paper, to which it adheres more or less closely,
it is whoUy without gloss, and faded to a whitish green, except round the
circumference where it usually retains a glaucous or verdigris colour. The
endochrome is very fluid and not well preserved in drying.
This plant is found in abundance on most of the Atlantic shores
of Europe, inhabiting the old stems of Fucus serratus and F. vesiculosus,
the leaves of Zostera marina, and occasionally, but far
less frequently, growing on submarine rocks and stones. It is
decidedly found in greater perfection and abundance as we proceed
northwards, and on the west coast of Scotland the finest
specimens we have seen are gathered. From one of these, collected
by the late Capt. Carmichael, our figure is taken.
Dr. Roth first described his Conferva lanosa in the third part of
his ‘Catalecta Botanica,’ published in 1806; and soon afterwards
Mr. Dillwyn introduced it to the notice of British Botanists in the