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2S2 3. Humida. J. HYDROPHYTE. Pl.cellaph. 1. Humida muralis. Wall humida. Threads green, rather stiff, bent, twining, rather thick, entangled so as to form a close green matt. Conferva muralis. Roth Cat. 3, IS" ; Dillw. 7; Engl. Bot. 1554. Conferva rigida, liot/i. Cat. 1, 166. Osciliatoriii parietiiia, Vuuch. 193, Oscillatoria muralis, Agardh Disp. 1, 27. Garden-walls, damp areas; all winter. 2. Humida decorticans. Slip-coat humida. Threads very slender, bluish green, bent, entangled into a very close green mat. Conferva muscosa coiifrajjosa rivulis innascons, DUlen. Muse. 15, Conferva confra^oia, L'ghtf. Scot. 9Tfi. Conferva violacea, Hudson Fl. -4ngt. 592. Conferva decorlicans, DiHicijn, 'cQ. Oscillatoria decorl'icni)?, Lyngbye IJydr. Dan. 95. Damp woods and bark of trees ; summer. Threads three times as slender as those of humida muralis. 3. Humida cyanea. Shj-hlue humida. Threads very slender, glaucous blue, covered with a deciduous coat, entangled into a close sky-blue mat. Conferva cyanea, Engl. Bot. 2518. Oscillatoria cyanea, Agardh Disp. ed. 2,33. Damp walls and stones. IV. 4. ELISA. Elisa. Threads simple, rarely adhering to one another, as if branched, membranaceous, gelatinous, upz-ight,^tufted, free, not oscillating, nor lengthening. 1. Elisaf072 tinalis. Spring elisa. Fresh ivater; threads simple, very slender, nearly hyaline, rather stiff, upright, short, forming a dark green mat. Conferva fontinalis fiisca omnium minima mollis, DUlen in Raii Syn, 58» Conferva fontinalis, Fl. Dun. 651 ; Engl. Bot. 2054. Oscillatoria fontinalis, jdgnrdii Syn. 110. Stones and posts in water ; summer. Tufts very small, dark or light green ; threads aggregated, a quarter of an inch long, straight; adheres to paper. 2. Elisa hicolor. Tivo-coloured elisa. Fresh water; threads simple, slender, bright green, weak, very long, forming a bright green fluctuating mat. Conferva bicolor, Engl. But. 22SS.
PlcelLaph, 1. HYDROPHYTE. 4. Elisa. 283 Stones ill rapid rivulets. Rings close, rounded off at each end, leaving pellucid intervals here and there. 3. Elisa distorta. Mis-shape?i elisa. Fresh water; threads branched, bluish green, rather stiff, upright, tufted. Conferva distorta, Engl. Bot. 2577. Oscillatoria distorta, Jgardli Disp. ed. 1,37. Decayed grass in boggy pools. Tvfts thick, short; threads equal, entangled; branches rather distant. 4. Elisa mirahilis. IVbnderful 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, Dillvsyn 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. Conftiva 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. ,S. ramosa. Filaments uniting as if branched, either by the end, or side by side. Conferva majuscula, Dillwyn Syn. 40, 15.
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PlcelLaph, 1. HYDROPHYTE. 4. Elisa. 283<br />
Stones ill rapid rivulets.<br />
Rings close, rounded off at each end, leaving pellucid<br />
intervals here and there.<br />
3. Elisa distorta. Mis-shape?i elisa.<br />
Fresh water; threads branched, bluish green, rather<br />
stiff, upright, tufted.<br />
Conferva distorta, Engl. Bot. 2577.<br />
Oscillatoria distorta, Jgardli Disp. ed. 1,37.<br />
Decayed grass in boggy pools.<br />
Tvfts thick, short; threads equal, entangled; branches<br />
rather distant.<br />
4. Elisa mirahilis. IVbnderful elisa.<br />
Fresh water; threads rather short, stiff, bluish green,<br />
bending and uniting side by side at the bend, entangled<br />
into a close mat.<br />
Conferva mirabilis, Dillvsyn 96.<br />
Fresh waters.<br />
Rings very close.<br />
5. Elisa genujlexa. Kneelent elisa.<br />
Marine ; threads rather short, stiff, pale blue, bending<br />
and uniting side by side at the bend, entangled into a close<br />
mat.<br />
Conftiva mirabilis, Engl. Bot. 2219.<br />
On marine plants.<br />
Tufts half an inch high, uniting and divaricating, then<br />
uniting again ; covered with a rather horny coat ; sporangia<br />
as long as broad.<br />
6. Elisa majuscula.<br />
Largish elisa.<br />
Marine; threads very long, yellowish, entangled into a<br />
very dense, cylindrical, oblong, fluctuating mat.<br />
Oscillatoria majuscula, Jurin Alg. Dec. 4, 7.<br />
Oscillatoria aeruginosa violacea, Agardh Syn, 109.<br />
Floating in the sea and on zostera marina.<br />
Tufts four inches long and three broad, blunt, brown<br />
or blackish ; threads equal ; rings very close.<br />
,S. ramosa. Filaments uniting as if branched, either by<br />
the end, or side by side.<br />
Conferva majuscula, Dillwyn Syn. 40, 15.