3M 28.Ectoear. 2.TH AL ASSI OPH YTiE . Pl.cell.aph. 
3. Eciocarpus granulosus Granular brown-weed. 
Threads slender, free; branches scattered, compound, 
spreading, with pellucid, taper points; joints as long as 
broad, becoming tumid, terminal joints the longest. 
Conferva granulosa, Engl. Bot. 2351. 
Sea-shores; July. 
Tufts olive-green, flaccid ; branches various, spreading ; 
tkeecB’ lateral, scattered, sessile, reverse-ovate. 
4. Ectocarpus siliculosus. Touch brown-weed. 
Threads very slender, free ; branches numerous, upright, 
alternate, awlshape; joints rather longer than broad. 
Conferva siliculosa, Dillwyn , 69; Engl . Bot. 2319. 
Ceramium confervoides, Roth Cat. 3, 148. 
Ceram i urn siliculosum, Agardh Disp. 18-. 
Sea-shores. 
Tufts greenish or yellowish brown, 3 to 6 inches high, 
flaccid; threads membranaceous, not entangled; branches 
alternate, nearly upright. 
5. Ectocarpus brachialus. Cross-armed brown-weed. 
Threads slender, wavy, entangled; branches very nume- 
rous, opposite,, crossing each other, widely spread, taper, 
pointed ; joints cylindrical, about as broad as long. 
Conferva brachiata, Engl. Bot. 2571. 
Ceramium braehiatum, Agardh Syn. 67 ? 
Salt-marshes and the sea-shore. 
Light yellowish-brown, woolly, very soft. 
6. Ectocarpus chalybeus . Steel brown-weed. 
Threads crowded; branches stiff, ascending y joints three 
times as long as broad ; thecce ovate, racemose. 
Conferva chalybea, Roth Cat. 3, 286 ; Dillw. 91. 
Conferva corymbifera, Engl. Bot. 1996. 
Ceramium chalybeum, Agardh Disp. 19. 
Ceramium pulchellum chalybeum, Agardh Syn. 69. 
Eresh- water. 
Tufts small, close,, 2 or 3 lines broad?; threads. irregu- 
larly branched; branches pressed close. 
IT. 29. CALLITHAMNION. Lyngbye. Pretty-weed. 
Thallus rose-red, threadlike, jointed, very much branch- 
ed; joints formed of a single longitudinal tube; knots pel- 
lucid; thecce ovate-globular, capsular, naked, nearly sessile, 
on the side of the twigs at the tips of the joints,— Marine. 
