$16 25. Conferva. 1. HYDROPHYTA. Pl. cell. aph. 
e. Coloured, simple, brittle. Chantransia. 
53. Conferva fasciata. Banded crowsilk. 
‘Threads simple, slender, slimy, purplish brown; joznts 
as long as broad, with a narrow, central, transverse band. 
Conferva fasciata, Dillwyn, 23. 
On decayed sticks and leaves, in fresh water. 
Threads about half an inch long. 
54. Conferva lineata. Lined crowsilk. 
Threads simple, slender, brittle, brown; joznis two or 
three times as long as broad, with one or two transverse 
lines at uncertain distances from each other; kzots con- 
tracted. 
Conferva lineata, Dillwyn, 44. 
Fragilaria lineata, Lyngbye Hydr. Dan, 184, 
Leaves of fresh-water plants. 
55. Conferva Borrert. Borrer’s crowsilk. 
Threads simple, slender, brittle, palish brown; joints ra- 
ther shorter than broad, combined in pairs; spores in the 
centre of each joint. 
Conferva nummuloides, Engl. Bot. 2287. 
On marine plants. , 
Threads short, tortuous, cylindrical, dirty white-—These 
three last species, as also c. dissiliens, might be formed 
into a very natural genus, bordering upon the diatomidez, 
from which they differ by the threads being cylindrical and 
solitary. 
