Plicell.aph: 2. FHALASSIOPHY LE. 29. Callith.. 32% 
long as broad; thece@: reverse ovate, pedicelled, solitary; 
pedicells short,. in the forks. 
Conferva pedicellata, Engl. Bot. 1817; Dilho. Conf, 108.. 
Sea-shores. 
Thallus 2 inches high, forming straight, stiff tufts of a 
very pale dull rose- colour. 
V. 30. CERAMIUM. Agardh. Horn-weed. 
Thallus rose-red, threadlike, jointed, forked, branched’; 
joints (solid.?) when magnified coloured in fine network ; 
thece ovate, lateral, involucrated with the short branches. 
1, Ceramium rubrum. Red horn-weed. 
Threads very much branched, red, cartilaginous; twigs 
bristlelike, forked at the tip; jozmts evate, about as long-as 
broad; knots contracted. 
Conferva marina geniculata ramosissima lubrica, longis sparsisve Ta- 
mulis, Dillen in Rati Syn. 61, 23. 
Conferva rubra, Huds. &l. Ang!. 600; Dillw. Conf. 34. 
Conferva nod ulosa, Lightf. Scot. 994. 
Conferva flosculosa, Ellis Phil. Tr. 57, 425. 
Ceramium virgatum, Roth Cat. 1. 
Ceramium elongatum, Roth Cat. 2, 178. 
Ceramium rubrum, 4gardh Syn. 60. 
Ceramium diaphanum. purpureum, Roth Cat. 2, 228. 
Fucus Lagasca, Clem. Ens. 315. 
Parasitic on other sea-plants. — 
Tufts dark red, becoming yellow by decay; joint pel- 
lucid in the centre. 
8. maculatum. Thallus small, thin; jorts with a dark 
central spot. 
2. Ceramium diaphanum. Transparent horn-weed. 
Thallus threadlike, very much branched, rather mem- 
branaceous, variegated with transparent and purple; twigs 
forcepshape at the tip; joints cylindrical, hyaline; knots 
elevated, coloured. 
Conferva marina nodosa lubrica. ramosissima et elegantissima rubens, 
Dillen in Ratt Syn. 62, 25. 
Conferva diaphana, Lightf. Scot. 996; Engl. Bot. 1742. 
Conferva nodulosa, Huds. Fl. Angl, 600. 
Conferva elegans, Roth Cat. 1. 
Conferva fastigiata, Roth Cat. 2, 224. 
Cenferva globulosa, Roth Cat. 2,233. 
Conferva moniliformis, Roth Cat. 2, 236. 
Ceramium diaphanum, Roth Cat. 3, 154. 
Ceramium forficatum glabellum, De Cand: Fl. Fr. 2; 46. 
