PL cell, aphyl. 1. HYDROPHYTE. 9. Bryopsis. 289 
Bryopsis arbuscula. Shrublike moss-weed. 
Phallus rather compressed, bright green, branched ; 
branches naked at bottom, pinnate at top ; lobes numerous, 
long, parallel, linear, opposite. 
Ulva plumosa, Hudson Ft. Angl . 571 ; Engl. Bot. 2375. 
Bryopsis arbuscula, Lamour. Journ. Hot. 1809, 134. 
Fucus arbusculus, Do Caml. FI. Fr. 2, 35. 
On stones and rocks on the coast. 
Phallus 2 inches long; sporidia clustering towards the 
circumference leaving the centre pellucid. 
X. 10. VAUCHERIA. De Candolle. Voucher, , 
Phallus threadlike, tubular, mostly branched above, not 
jointed, rather stiff, mostly cut, angled ; membrane of the 
threads hyaline; sporidia green, minute, globose, scattered 
in the tube ; side-branches vesicular, single or aggregate, 
elongating into new individuals, or barren incurved. 
a. Vesicles single . 
1. Vaucheria dicholoma. Pwoforked voucher . 
Fresh-water ; threads large, tufted, upright, forked at 
top ; branches long; vesicles globose, scattered, sessile. 
Conferva dichotoma, Lin. Sp. PL 1635; Dillw. 15; Engl. Bot. 932. 
Cerarnium dichotomurn, Roth Cal. 3, 119. 
Ceramium caespitosum maximum, Roth Cat. 3, 120. 
"Vaucheria dichotoma, Agardh Syn. 47. 
Stagnant waters and ditches ; April to August. 
Pufts angular, cut, blackish ; threads angular at bottom, 
slippery, a foot long. 
2. Vaucheria ovaia. Ovate voucher „ 
Fresh-water ; threads hairlike, rather forked, tessular, 
peduncled, single, globose; peduncles naked, curved. 
Ectosperma ovata, Voucher , 25. 
Vaucheria ovata, De Candolle FI. Fr. 2, 63. 
Conferva bnrsata, Muller Nov. Act. Petr. 3,96. 
Vaucheria bursata, Agardh Disp. ed. 1,21. 
Ditches and stagnant waters ; April. 
Pufts very dense, floating on water; threads 9 inches 
long, simple at bottom, twice as long as the vesicles. 
3. Vaucheria hamata. Hooked voucher. 
Fresh- water ; threads hairlike; branches vague; vesicles 
peduncled, solitary, globose; peduncles with a barren hook, 
turned back. 
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