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PLcelLaph. 1. HYDROPHYTE. lO.Vauck ^1
Tufts very densely entangled, an ell long, floating;
branches divaricating.
8. Vaucheria ornithocephala. Birds-head voucher.
Fresh-ivater ; threads branched; branches scattered;
peduncles perpendicular.
vesicles ovate, obliquely beaked ;
Conferva vesicaia, Dillm, 74.
Vaucheria ornithocephala, jigardh Syn. 49.
Ditches ; autumn.
Tiifts entangled, floating; threads scattered, rather
straight; vesicles 2 or 4? together, 1-sided, resembling a bird's
head peduncles very short.
;
b. Vesicles i?i pairs, with a barren branch between them.
9. Vaucheria sessilis. Sessile vaucher.
Fresh-water; /Ar(?oc?5 hairlike, branched ; vesicles se?:S\\e,
mostly in pairs, ovate, intermediate barren branch turned
back.
Ectosperma sessilis, Vaucher, 31.
"Vaucheria sessilis, De Candolle Fl. Fr. 2, 63; Engl. Bot. 1765.
Stagnant waters and ditches ; April.
Ti/J'ts very dense, floating; vesicles sometimes solitary,
10. Vaucheria gemi?iata. Doubled vaucher.
Fresh-ivater ; threads hairlike, forked ; vesicles in pairs,
globose, opposite, on a common horned peduncle ;
termediate, straight.
Ectosperma geminata, Vaucher, 29.
Vaucheria geminata. Be Candolle Fl. Fr. 2, 62 ; Engl. Bot. 1766.
horn in-
Stagnant ditches ; February.
Tufts very close, floating ; peduncles 3 times as long a^
broad, horizontal ending in a slightly jointed, barren^
straight point.
1 1 Vaucheria ccespitosa. Turf vaucher.
Fresh-water ; threads hairlike, tufted, forked, branched;
last branches horizontal, facing one way, vesicle-bearing
vesicles in pairs, sessile, terminal, with a short, straight,
intermediate point.
Conferva canalicularis, Lin. S. P. 1634.
Conferva fontinalis, Blumenbach in Goett. Mag. 17S1, 80.
Ectosperma caespitosa, Vaucher, 28.
Vaucheria caespitosa, yJgardh Syn. 43.
Springs, in clayey so^ ;
April.
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