182 BOTANY. 
unite themselves directly into a new colony in the interior 
of the parent-colony (Fig. 60). 
Crass II. C£poconie#. 
276. The plants constituting this class are composed of 
articulated, simple, or branched 
filaments, which are attached to 
sticks, stones, earth, or other ob- 
jects by root-like projections of 
the basal cells. The chlorophyll 
in the cells is always dense and 
uniform. They inhabit ponds and 
slow streams, and form green 
or brownish masses which fringe 
the sticks and other objects in the 
water. 
277. The asexual reproduction 
of Cidogoniez is very curious. 
During the early and active 
growth of the plants the proto- 
plasm of certain cells escapes as a 
large zodspore (Fig. 61,4 and B); 
it is provided with a crown of 
cilia about its smaller hyaline 
end, by means of which it swims 
rapidly hither and thither in the 
water (C). Aftera time it comes 
Fie. 61.— Asexual reproduc- : . 
tion of CEdogonium. 4,fracture to rest, clothes itself with a cell- 
of a filament; B, escape of pro- 
ero wince s a wall, and sends out from ils small- 
aitroot ke ros io ns rom er sth pea elas Sania: vb 
Gi ea ey Cece = ace ch mee Gael aE 
Magnified 360 times. it now elongates, and at length 
