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304. 25. Conferva. 1. HYDROPHYTE, Pl.cellaph.
7 hreads in tufts, 3 or 4 inches long; small branches short,
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scattered, orreenish black, does not 111*1*' adhere in drvinff to
either glass or paper,
1
becomes blackish joints ; sometimes
contracted alternately,
4'. Conferva crispata. Crisped crowsilk.
Fresh-water; threads branched, crisped, dark green;
Iranches alternate, very remote ; /ofw/^^ cylindrical, four or
six times as long as broad, when dried alternately compressed.
Conferva crispata. Roth Cat. 1, 178; Engl. J5o^ 2350.
Conferva rivularis crispata, ^gardli Syn. 86.
Stagnant pools ; July.
T/tJ'ts very dense, about 2 feet long; threads very closely
entangled.
5. Conferva flavescens. Yellowish crowsilk.
Fresh-water ; threads very much branched, bent ; branches
alternate, divaricating; lateral twigs short, spreading horizontally
; joints cylindrical, 8 or 10 times as long as broad.
ConftTva flavescens. Roth Cat. 2, 224 ;
Conferva pennatula, Dillioyn Syn. 6-1?
Fresh-water ditches; summer.
Eng. Bot. 2088.
Tit/'fs very thick; threads entangled, very slender, 9 inches
long; branches attenuated, blunt.
6. Coifervafracta.
Broken crowsilk.
Threads much branched, hairlike, stiff, bent; branches
and twigs divaricating, mostly alternate; joints 4- to 8 times
as long as broad, becoming oblong.
Conferva bullosa, Lin. Sp. PI. 1637,
Conferva vagabunda, Hudson Fl. Angl. 601 ;
Dillvs. 5.
Conferva divaricaia. Roth Cat. 1, 179.
Conferva fracia, Fl. Dan. 916; Billw. 14; Engl. Bot. 2338.
Ditches and pools.
Tufts expanded, very thick, floating, buUated; threads
2 to 4 inches long; branches attenuated, tip acute.
(3. hlrta. Knots obsolete, by reason of the echijiellae parasitic
upon them.
Conferva iiirta, Fl. Dan. 947.
Conferva fracta Iiirta, Lynghye Ilydr. Dan, 152.
y. elongnta. Marine threads straight ; upper Irancha
very long, simple.
Conferva divaricata elongata, Roth Cat. 1, ISl.
Conferva fracta eiongata, Lyngbye Uydr. Dan. 152.