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mS 28.EGtocar. 2.THALASSIOPHYT^. Pl.ceU.aph.
$, Eclocarpus granulosus. Granular brown-weed.
Threads slender, free; branches scattered, compound,
spreading, with pellucid, taper points; jozw/^ as long as
broad, becoming tumid, terminal joints the longest.
Conferva granulosa, Engl. Bot. 2351.
Sea-shores; July.
Tufts olive-green, flaccid; Iranclies various, spreading;
ihgc(B lateral, scattered, sessile, reverse-ovate.
4. Ectocarpus silicidosus. Pouch hroiun-iueed.
Threads very slender, free ; hraiiches numerous, upright,
alternate, awlshape; joints leather longer than broad.
Conferva siliculosa, Billwi/n, 69; Engl. Bot. 2319.
.Ceraniiiim confervoides, Roth Cat. 3, 148.
Ceramium siliculos.uin, Agardh Disp. IS.
Sea-shores.
Tufts greenish or yellowish brown, 3 to 6 inches high*
^accid ; threads membranaceous, not entangled; branches
alternate, nearly upright.
5. Ectocarpus brachiatus. Cross-armed brown-weed.
Threads slender, wavy, entangled ; branches very numerous,
op])osite, crossing each other, widely spread, taper,
pointed ; joints cylindrical, about as broad as long.
Conferva brachiata, Engl. Bot. 2571.
Ceramium biachiatum, 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 ;jom/5 three
times as long as broad; theccB ovate, racemose.
Conferva chalybea, Roth Cut. 3, 286; Billie. 91.
:Conferva corymbifera, Engl. Bot. 1996.
Ceramium chalybeum, ^gardh Disp. 19.
Ceramiurn pukhellum clialybeum, Agardh Sun, 69.
Fresh-water.
Tufts small, close, 2 or 3 lines broad ; .threads iiTegu-
larlv' branched; branches i^res&Qdi close.
IV. 29. CALLITHAMNION. Lyngbye. Frelly-weed,
Thalhis rose-red, threadlike, jointed, very much branched;
joints formed of a single longitudinal tube; knots pel-
lucid ; theccB ovate-globular, capsular, naked, nearly sessile,
©n the side of the twigs at the tips of the joints.—Marine.