The English flora - SeaweedAfrica

Conferva-] ALG/E CONFERVOIDE.E. 353
ca/a, Grev. Crypt. Edin. p. 315.
—
—
Bangin Jolinstoni, Grev. in
Johnst. Berw. Fl. p. 260, (according to original specimens.)
On marine rocks. Bantry, Miss Hutching. Berwick, Dr. Johnston.
Firth of Forth, Dr. Greville.— Filaments half the diameter of C. tortuosa,
with shorter joints. I can find no characters to distinguish the C. intri-
cata of the Flora Fdinensis ; nor is Bangia Johmtoni in any way differ-
ent (as Mr. Arnott first pointed out to me) from C. implexa.
16. C. ulothrix, Lyngb. (short-joinUd curled Conferva); "filaments
slender flexuose entangled somewhat rigid, articulations
rather shorter than broad." Lyngb. Hydroph. Dan. t. 50. Ag.
Syst. Alg. p. 98.
In rocky pools, attached to small Algae. Appin, Captain Carmichael.
— " Filaments slender, curled and convoluted into a small elastic green
tuft. Articulations hardly so long as broad. It is the preceding species
in miniature, with the exceptions above stated." Carm. MSS.
17. C. perreptans, Carm. (creeping Conferva); filaments slender
crisped entangled into dull-green strata, bent at acute angles
and at the genuflexion sending out attenuated creeping radicles,
articulations about twice as long as broad. Zygnema littorenm,
Lyngb. Hydroph. Dan. t. 59.
On rocks, at the extreme verge of high-water mark. Appin, Captain
Carmichael. Miltown Malbay, IV. H.Harvey.— Strata thin, dull-green :
filaments irregularly twisted, forming very acute angles, here and there
sending out tubular, indistinctly jointed, partially hyaline radicles,
" which adhere to particles of sand and other matters within their reach ;
often to a neighbouring filament." Carm. In drying, the endochrome
becomes contracted into a dark central cord.
18. C. arenosa, Carm. (Strand Conferva); filaments slender
rigid interwoven into broad strata, articulations 3—5 times
longer than broad.
* On the flat, sandy shore, about half-tide level, at Appin," Captain
Carmichael.— " This species 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 slightly connected that thev may
be separated like folds of gauze, to the extent of many inches, without
the least laceration. Filaments .'> — (i inches long, about the thickness of
C. bombycina, rigid, possessed of a peculiar roughness; feeling, when
polled asunder, B8 if a hair were drawn over a piece of rosin. Articula-
tions 'A— .) times ;is long as broad ; sporular mass assuming a great varied
of forms. When old, the filaments become exceedingly rough and
often tubercular." Carm. MSS.
d. Filaments tufted s with n scutate root, straight, green;—
inhabiting the sea.
ID. ('. Miliif/nniuni. Web. el .\lohr, (///'/// Conferva); fila-
ments elongate scattered straight thick erect stiff and win darkgreen,
articulations twice as long as broad Dilhr. Conf. Syn.
I>. -is. t. a. A,h .S,,/. Alg.p, 99.
In the sea, in niai.\ places j bill no! \n\ common any where.— 1'ilavirnts
5—8 inches high, remarkably rkid and win ; dissepiment s somewhat
contracted) very narrow, but pellucid.
2 \