CONFERVACE. 145 
In ditches, pools, and other standing water. 
s 
Articulations four to eight times as long as their diameter, usually 
bright green. 
Plate LVI. fig. 5. Part of branch of C. canalicularis X 100 diam. 
Cladophora egagropila. (Linn.) Kutz. Tab. m1. 
Dark green, threads rigid, very much branched, radiating 
from a common centre, at length agglomerated into a very 
dense, spongy globe. Ramulierect, often quite obtuse, articula- 
tions sometimes incrassated upwards, cell contents not arranged 
in spirals, cell-membrane now and then thickened. 
Sizz. Branches ‘04-07 diam, 2-4 or even 12 times as long. 
Rabh. Alg. Eur. iii., 343. 
Conferva egagropila, Linn. Dillw. Conf., t. 87. Purt. 
Mid. Fl. iii, p. 175. Eng. Bot. ii., 1877; ii., 2496. Harv. 
Man. 134, Eng. Fl. v.,357. Huds. Fl. Ang. ii., 604. Mack. 
Hib. 228. Hull Br. Fl. 3832. Hook. Fl. Scot. ii, 82. 
With. Arr, iv., 141. 
Conferva globosa, Phil. Trans. Roy. Soc. xli., 498. 
Conferva egagropilaris, Gray Arr. i., 308. 
Cladophora glomerata, Hass. Alg., p. 218 in part. 
var. Brownii (Dillw.). 
Rabh. Alg. Eur. iii., 345. 
Conferva Brownii, Dillw. Conf. Syn., t.p. Harv. Man. 134. 
Eng. Fl. v., 356. Wyatt Alg. Dan., No. 225. Mack. Fl. Hib. 
228. Eng. Bot. 2879. 
“ This singular vegetable production is a native of Alpine lakes in many 
parts of Europe, often lying in great abundance at the bottom of the 
water, and occasionally only rising and floating on the surface. It hag 
been found in the lakes of the north of England, Wales, Scotland, and 
the district of Connemara in Ireland, but is generally esteemed rare. In 
size it varies from that of a small pea to three or four inches in dia- 
meter, and its form is always nearly spherical. Internally the larger 
specimens are hollow, without any nucleus, and when examined their 
substance is found to consist of innumerable green, pellucid, Tepeatedly 
branched filaments, firmly entangled together. The vesicles, when the 
plant is recently taken from the water, are turgid with fluid, and nearly 
cylindrical, being slightly swollen towards the apex, where the granular 
matter of the endochrome seems chiefly collected as a green opaque 
mass ; in the terminal vesicle, however, of each branch it assumes often 
a dark brown hue and more solidity, probably becoming the medium of 
reproduction, and escaping in the form of sporules. The elasticity of 
the balls may be estimated by the fact of their having been used as pen- 
wipers in the north of England.—Ing. Bot. 167. 
Plate LVI. jig. 6. Threads of C. egagropila, nat. size. Fig. 7, portion 
of upper branch X 100 diam. 
