Pl.celLaph. 2.THALASSIOPHYTAS. 27.Bulboch. 321 
II. 27. BULBOCHiETE. Agardh. Bristle-weed . 
Th alius green, membranaceous, much branched, jointed; 
Iranches bristlelike, continuous, bulbous at the bottom, 
from the end of the joints; thecce ovate, capsular, sessile, 
lateral, alternating with the branches. 
Bulhochcete Rolhii. Rottis bristle-weed . 
Thallus branched, flexuous, yellowish-green ; branches 
bulbous at the base ; joints 3 times as long as broad. 
Conferva vivipara, Dillwyn , 59. 
Conferva setigera, Roth Cat. 3,238. 
Bulbochaete setigera, Agardh Syn. 71. 
Fresh-water plants. 
Tafts half an inch long, upright, weak; stem forked; 
Iranches very slender, simple, straight, very long. 
III. 28. ECTOCARPUS. Lyngbye. Brown-weed . 
Thallus threadshape, jointed, membranaceous, very 
much branched, brown ; joints all simple ; knots pellucid; 
thecce ovate or podshape, on the side or ends of the twigs. 
—Mostly marine; threads entangled into a branched tuft. 
1. Ectocarpus tomentosus. Woollike brown-weed. 
Thallus very slender, very closely entangled into a rope- 
like, spongy mass, very much branched; branches vague, 
divaricated ; joints 4* times as long as broad. 
Conferva marina toinentosa minus tenera et ferruginea, Dillen in Raii 
Syn. 59, 1 5. 
Conferva tomentosa, Dillwyn Conf. 56. 
Ceramium tomentosum, Agardh Syn. 64. 
Ectocarpus tomentosus, Lyngbye Hydr. Dan. 132. 
Sea-shores. 
Tufts 2 or 3 inches long, very much branched, pale 
green; threads equal; branches spreading; thecce capsular, 
lateral, podshaped terminal. 
2. Ectocarpus littoralis. Shore brown-weed . 
Thallus ropelike ; threads very slender, entangled ; 
Iranches upright, opposite and alternate ; joints as long as 
broad. 
Conferva marina capillacea longa ramosissima mollis, Dillen in Raii 
Syn. 59, 9. 
Conferva littoralis, Dillwyn , 31 ; Engl. Bot. 2290. 
Ceramium tomentosum, Roth Cat. 3, 147. 
Sea-shores on rocks, shells, or other sea-plants. 
Thallus pale green, not spongy, less densely entangled. 
TOL. I. Y 
