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328 SO.Ceram. 2. THALASSIOPHYTiE. Plcell.aph,
Sea-coasts on rocks and large marine plants.
Threads divaricated ; joints vary in length ; sporidia immersed
in the joints.
S. Ceramium ciliatum. Fringed hnrn-iveed.
Thallus threadlike, forked, slender, very much branched,
variegated, transparent, and pale red; ^zf i^-i forcepshape
at the tip ; joints cylindrical, hyaline, scarcely longer than
broad ; knots fringed, in a single whirl.
Conferva ciliata, Ellis Ph. Tr. 57,423; Dillw. Conf. 53; Engl. Bot.
2428
Ceramium ciliatum, Lyngbye Hydr. Dan. 121.
Conferva pilosa, Rvt/i Cat. 2,225.
'Ceramium forcipatuin ciliatum, De Cmid. Fl. Fr. 2, 46.
Sea-shore, on stones and sea-plants.
Thalbis tufted; k?iots red, fringed with short, white,
spreading, pellucid spines; thecce aggregated.
VI. 31. GRIFFITSIA. Agardh. Grijiths.
branches forked,
Thallus rose-red, threadlike, branched ;
whirled, or scattered ; joints pearshaped, composed of a
.«;ingle tube ; knots pellucid ; thecce lateral, appearing like
a young shoot, surrounded by many jointless threads ;
sporidia roundish.— Marine.
1. Griffitsia setacea. Bristle griffiths.
Thallus forked, branched, rodlike, stiff, deep rose-colour,
shining; branches long; joints nearly cylindrical, five times
as long as broad.
Corallina confervoides gelatinosa riibens, lamulis et geniculis peran-
gnstis, Dillen in Raii Syn. 34, 8.
Conferva marina gelatinosa corallinae instar geniculata tenuior, Dillen
Muse. 33.
Conferva setacea, Huds. Fl. Angl. 599; Eng. Bot. 1689; Dillm, Conf.
82.
Grifiitsia setacea, Agardh Disp. 28.
Sea-shores ; June to September.
Thallus very bushy, becoming orange-coloured by exposure
to the air; hranckes rather obtuse; fruit peduncled.
2. Griffitsia corallina. Coralline griffiths.
Thallus forked, shining, fine gold en- red ; joints thickened
above, 4 times as long as broad.