CoNFEEVA intrlcata, Greo! El. Edin. p. S15.
B a n g ia Jolmstoni, Oreo! in Johnst. El. Berw. p. 260.
B a n g ia viridis, El. Ban. t. 1601. f. 1. {sec. lyn g l!)
H ab. On marine rooks, and attached to Algse. Dwa!ay Day, Miss Hutchins.
Berwick, B r. Johnson. Frith of Forth, Br. GreviUe. Torquay, Mrs.
Griffithis. Malbay, IT. i f ./A Not uncommon.
G e o g r . D is t r . Shores of Europe. Fteroe Islands.
D e s c r . Eilaments about two thuds the thickness of those of C. tortuosa, forming
densely interwoven strata, or tufts among the branches of other Algse. Joints
even in the same thread varying from a httle shorter than their breadth, to
about once aud a half as long. Colour a dark grass green.
I am now of opinion that the plant called C. ulothrix in the
British Flora, whether the species intended by Lyngbye or not—
a point which I do not determine—cannot be kept separate from
C. implexa. This species was first noticed by tbe late Miss
Hutchins, at Bantry, and is probably widely dispersed.
B. Pig. 1. Co n f e r v a im p l e x a ;—natural size. 2. some of the threads ««i;-
uijied.______________ _______________________
P l a t e LIV. C.
CONFERVA ARENOSA, Carm.
C o n f e r v a arenosa; filaments slender, straigbtish, rigid, forming broad
strata; articulations iron three to five times longer than broad.
C o n f e r v a arenosa, Carm. Alg. Appin. ined. Haro, in Hook. Br. El. vol. ii,
p. 353. Harv.inMack. El. H ib .p a r i .Z .p .223. Harv. Man. p. \3 3 .
H a b . On the sandy stea-shore, at half-tide level. Appin, Capt. Carmichael.
Bantry Bay. Mr. B . Ball.
G e o g r . D i s t r . Scotland. Ireland.
D e s c r . “ This species,” says Capt. Carmichael, “ occurs in fleeces a yard or
more in extent, and of a peculiar structure. They consist of several exceedingly
thin layers, placed over each other, but so sbghtly connected tbat
they may be separated like folds of gauze, to the extent of many inches,
without the least laceration. Eilaments 5 or 6 inches long, about the thickness
of 0. bomhymna, rigid, possessed of a peculiar roughness ; feeling,
when pulled asunder, as if hair were drawn over a piece of rosin. Articulations
3-5 times as long as broad; sporular mass assuming a great variety
of forms. When old, the filaments become exceedingly rough, and often
tubercular.”—Alg. Appin. itwd.
The great length of tbe joints readily distinguishes this species
from any other British Marine Conferva.
It may be well to observe that the three species here represented
are drawn to the same scale.
C. Fig. 1. Co n f e r v a ARENOSA ;■
nified. ___
size. 2, Some of the filaments mag-
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