Classification of Green Algce. i i Q 
** Cells united by mucilage to form colonies. Vegetative division 
abundant. 
5. Ashenasyella. Schmidle, 1902. 
Colony spherical, mucilaginous, free or attached. Cells 
pyriform, the pointed end directed centrally, and 
passing into an ill defined stalk, which loses itself in 
the mucilage. Chromatophore single, and lining the 
whole of the thin cell-wall except at the pointed end. 
Each cell may give rise to four to sixteen zoospores 
which escape by a lateral hole. On germination of 
the zoospore the long flagellum becomes mucilaginous. 
6. Oodesmus. Schmidle, 1902. 
Colony free-floating, consisting usually of four oval cells 
united together in one plane by very short thin bands 
of mucilage. Cell-wall thick ; chromatophores one or 
two. Reproduction by division of the cell-contents 
into four bodies (uniflagellate zoospores? ), which (after 
very briefly swarming?) unite together (by their 
flagella ?) 
7. Mischococcus. Nageli, 1849. 
Cells round with one to four chromatophores ; united to 
form an attached dendroidal cluster by stout tubular 
mucilaginous stalks, the cells occurring only at the 
ends of the branches. Reproduction by zoospores, 
and by gametes. The zygote typically, and the 
zoospores sometimes, germinate to form a so-called 
palmelloid state in which the cells are oval, divide in 
two directions, and have very short broad basal 
mucilaginous stalks, by means of which all the 
daughter-cells remain fused together side by side to 
form a large epiphytic cushion. 
Fam. II. Confervaceae. 
Plant-body unicellular or filamentous. Cells uninucleate or sub- 
coenocytic. Reproduction by zoospores with one long and one short 
flagellum and with two lateral chromatophores (several in Polychloris) ; 
also by planogametes, which in some cases have been described as 
possessing two equal flagella. 
Genera. 
1. Polychloris . Borzi, 1892. 
Cells distinct, spherical or polygonal by compression, 
with numerous discoid chromatophores; dividing in 
three directions. Reproduction by zoospores, arising 
eight to sixteen from a cell, and having each three or 
more chromatophores. 
2. Botrydiopsis. Borzi, 1889. 
Cell spherical unattached, with a single nucleus and a 
large number of discoid chromatophores. Vegetative 
division does not occur. Reproduction by division of 
