Ser. CHLOROSPERMEX. Fam. Confervee. 
Puate CCCLI. 
CLADOPHORA NUDA, Zarv. 
Gen. Cuar. Filaments green, attached, uniform, branched, composed of 
a single series of cells or articulations. Fruit, aggregated granules 
or zoospores, contained in the articulations, having, at some period, 
a proper ciliary motion. CiapopHora (Avtz),—from xdaédos, a branch, 
and qopew, to dear. 
CraporHora zuda; filaments somewhat rigid, slender, very straight, dull- 
green, or olivaceous (when dry), sparingly dichotomous ; ramuli few 
and scattered, appressed, the uppermost often opposite ; articulations 
many times longer than broad. 
CiapopHora nuda, Harv. Man. ed. 2. p. 101. 
Conrerva nuda, Harv. in Mack. Fl. Hib. part 3. p. 229. Harv. Man.ed. 1. 
p- 136. 
Has. On basalt rocks, between tide-marks. At Port Stewart, co. An- 
trim, Wr. D. Moore. 
Groer. Distr. ? 
Descr. Filaments loosely tufted, two or three inches high, capillary, sparingly 
branched, very straight, irregularly forked or sub-alternately divided ; 
secondary branches distant and very erect, of various lengths, naked, or 
furnished with a few very erect or appressed, short ramuli, the upper ones 
of which are occasionally opposite. These ramuli are scarcely more slender 
than the other parts of the frond, and end in a bluntish point. The articu- 
lations, in the older parts, are many times longer than their breadth, and 
have thick walls, leaving a wide space surrounding the dull-green endo- 
chrome; the dissepiments are slightly contracted. The substance is rather 
rigid, and without gloss; and in drying the plant does not adhere to paper. 
Oe” 
My knowledge of this species, if the plant here figured be 
entitled to rank as a species, is confined to a specimen collected 
by Mr. Moore, many years ago, on the coast of Antrim, and now 
preserved in the Dublin University Herbarium. It is undoubt- 
edly nearly related to C. rupestris, from which, at first sight, it 
differs by its duller colour and more naked branches, and espe- 
cially by the much longer articulations of the stem, and the 
wider borders of the tube. Still, I fear this character of long 
