Pl.cell.aph. 1. HYDROPHYTE. 4. Elisa. 283 
Stones in rapid rivulets. 
Rings close, rounded off at each end, leaving pellucid 
intervals here and there. 
3. Elisa distorta. Mis-shapen elisa . 
Fresh water ; threads branched, bluish green, rather 
stiff, upright, tufted. 
Conferva distorta, Engl. Bot. 2577. 
Oscillatoria distorta, Agardh Disp. ed. 1,37. 
Decayed grass in boggy pools. 
Tyfts thick, short ; threads equal, entangled ; branches 
rather distant. 
4. Elisa mirabilis. IVonderful elisa. 
Fresh water; threads rather short, stiff, bluish green, 
bending and uniting side by side at the bend, entangled 
into a close mat. 
Conferva mirabilis, Dillwyn 96. 
Fresh waters. 
Rings very close. 
5. Elisa genujlexa. Kneelent elisa . 
Marine ; threads rather short, stiff, pale blue, bending 
and uniting side by side at the bend, entangled into a close 
mat. 
Conferva mirabilis, Engl. Bot. 2219. 
On marine plants. 
Tufts half an inch high, uniting and divaricating, then 
uniting again; covered with a rather horny coat; sporangia 
as long as broad. 
6. Elisa majuscula. Largish elisa. 
Marine ; threads very long, yellowish, entangled into a 
very dense, cylindrical, oblong, fluctuating mat. 
Oscillatoria majuscula, Jurin Alg. Dec. 4, 7. 
Oscillatoria aeruginosa violacea, Agardh Syn. 109. 
Floating in the sea and on zostera marina. 
Tufts four inches long and three broad, blunt, brown 
or blackish ; threads equal ; rings very close. 
0. ramosa. Filaments uniting as if branched, either by 
the end, or side by side. 
Conferva majuscula, Dillwyn Syn. 40, 15. 
