328 30. Ceram. 2. THALASSIOPHYTiE. PI. cell. aph. 
Sea-coasts on rocks and large marine plants. 
Threads divaricated ; joints vary in length ; sporidia im- 
mersed in the joints. 
3. Ceramium ciliatum. Fringed horn-weed . 
Thallus threadlike, forked, slender, very much branched, 
variegated, transparent, and pale red; twigs forcepshape 
at the tip ; joints cylindrical, hyaline, scarcely longer than 
broad ; knots fringed, in a single whirl. 
Conferva ciliata, Ellis Ph. Tr. 57, 425; Dillw. Conf. 53; Engl. Bot. 
2428 
Ceramiuui ciliatum, Lyngbye Hydr. Dan. 121. 
Conferva pilosa, Ruth Cat. 2,225. 
Ceramium forcipatum ciliatum, De Cand. FI. Fr. 2,46. 
Sea-shore, on stones and sea-plants. 
Thallus tufted ; knots red, fringed with short, white, 
spreading, pellucid spines; tkecce aggregated. 
VI. 31. GRIFFITSIA. Agardh. Griffiths. 
Thallus rose-red, threadlike, branched ; branches forked, 
whirled, or scattered ; joints pearshaped, composed of a 
single tube ; knots pellucid ; thecas lateral, appearing like 
a young shoot, surrounded by many jointless threads ; 
sporidia roundish. — Marine. 
1. Grffitsia seiacea. Bristle grffiths. 
Thallus forked, branched, rodlike, stiff, deep rose-colour, 
shining; branches long; joints nearly cylindrical, five times 
as long as broad. 
Corallina confervoides gelatinosa rubens, ramulis et geniculis peran- 
gustis, Dillen in Raii Syn. 34, 8. 
Conferva marina gelatinosa corallinae instar geniculata tenuior, Dillen 
Muse. 33. 
Conferva setacea, Huds. FI. Angl. 599; Eng. Bot. 1689; Dillw. Conf. 
82. 
Griffitsia setacea, Agardh Disp. 28. 
Sea-shores; June to September. 
Thallus very bushy, becoming orange-coloured by ex- 
posure to the air; branches rather obtuse; fruit peduncled. 
2. Griffitsia corallina. Coralline griffiths. 
Thallus forked, shining, fine golden-red ; joints thickenecf 
above, 4 times as long as broad. 
