Ser. CHLOROSPERME®. Fam. Confervee. 
Prats CXXX. 
CLADOPHORA DIFFUSA, Za. 
Gen. Cuan. Filaments green, jomted, attached, uniform, branched. Fruit, 
aggregated granules or zoospores, contained in the joints, having at 
some period a proper ciliary motion. CxiapopHora (K7tz.),—from 
kdados, a branch, and popéw, to bear. 
CraporHora diffusa; filaments sub-setaceous, loosely tufted, rigid, dark 
or full green, flexuous, much branched; branches distant, elongated, 
irregularly subdivided, or somewhat dichotomous, furnished towards 
the top with a few secund, simple ramuli; articulations 3-4 times 
longer than broad. 
ConFERVA diffusa, Roth, Cat. Bot. vol.ii. p.207.t.7. Dillw. Conf. t. 21. 
Li. Bot.t. 2289. Ag. Syst.p.116. Harv. in Hook. Br. Fl. vol. ii. p. 358. 
Harv. in Mack. Fl. Hib, part 3. p. 229. Harv. Man. p.136. Wyatt, Aly. 
Danm. no. 144. J. Ag. Alg. Medit. p. 13. 
ConreRva distans, 4g. Syst. p. 120. 
Has. On rocks and stones between tide marks, and in clear pools near 
low-water mark. Annual. Summer. Near Swansea, Di/dwyn. Tor- 
bay, Mrs. Griffiths. Falmouth, Miss Warren. Aberflraw, Mr. 
Ralfs. Sidmouth, Rev. R. Cresswell. Malbay, W.H. H., and in 
other places. Port Rush, Mr. Moore. 
Grocer. Distr. Atlantic shores of Europe. Mediterranean Sea. 
Descr. Filaments from six to twelve inches long, or more, as thick as horsehair, 
cylindrical, equal, loosely tufted, generally so rigid as to bristle and stand 
out, one from another, when removed from the water; occasionally flaccid, 
flexuous, much branched. Branches rather distantly placed, long, irregu- 
larly subdivided in a manner between alternate and dichotomous, sometimes 
repeatedly, sometimes but slightly branched, the lesser divisions either 
long, simple, and quite naked, or bearing towards their extremities a few 
simple secund ramuli. Joints tolerably uniform in all parts of the frond, 
twice, thrice or four times as long as broad. Colour, when young, a full 
and rather dark, glossy green, afterwards paler and more yellowish. In 
drying, the plant adheres, but not strongly, to paper. 
The Conferva diffusa of British authors, here figured, is, per- 
haps, scarcely sufficiently distinct from Cladophora Hutchinsia, 
represented in Plate CXXIV. As already remarked, it is more 
slender than the typical form of that species, its branches are 
less frequently divided, the ramuli longer, more distant and 
simple, the joints longer, and the substance less firm and rigid. 
