Pl. cell. aph. 2.THALASSIOPHYTJE. 31. Griffit. 329 
Corallina confervoides gelatinosa alba, gcniculis crassiu3culis pelluci- 
dis, Dillen in Raii Syn. 34, 8. 
Conferva marina, gelatinosa, corallinae instar geniculata crassior, Dil- 
len Muse. 33. 
Conferva geniculata, Ellis Ph. Tr. 57, 425. 
Conferva corailoides, Lin. S. P. 1636. 
Conferva corallina, Lin. Syst. Peg. 973; Dillwyn Conf. 98; Engl. Bot . 
1815. 
Callithamnion corallinutn, Lyngbye Hydr. Dan. 126. 
Sea-shore; July. 
Thallus 2 or 3 inches high ; thecce sessile. 
3. Griffitsia larbnia. Bearded griffiths. 
Thallus forked, branched, pale crimson, fibrous at the 
tip; twigs opposite, many-cut, very slender ; joints thick- 
ened above, 5 times as long as broad. 
Conferva florifera, Ellis Ph. Tr. 57,425. 
Conferva barbata, Engl. Bot. 1814; Dillvo. Syn. 75. 
Griffitsia barbata, Agardh Disp. 28. 
Sea-shores; July. 
Thallus 2 or 3 inches high; lower branches divaricating; 
thecce lateral, often sessile. 
4. Griffitsia multifida. Many-cut griffiths. 
Thallus branched, red ; twigs opposite or ternate, dis- 
tant, many-cut ; joints cylindrical, 4 or 5 times as long as 
broad. 
Conferva multifida, Engl. Bot. 1818, not of Hudson; Dillvo. Syn. 75. 
Griffitsia multifida, Agardh Disp. 23, 
Thalli several, 3 to 5 inches high, fugacious rose-colour; 
branches unequal. 
5. Griffitsia equiseti folia. Horsetail griffiths. 
Thallus very much branched, thick, purplish red ; 
branches attenuated at both ends; twigs in whirls, tiledlike, 
short, many-cut, covering the stem entirely ; joints 3 to 
5 times as long as broad. 
Conferva imbricata, Huds. FI. Angl. 603. 
Conferva multifida, Huds. FI. Angl. 603. 
Conferva equisetifolia, Light/ . Scot. 984; Engl. Bot. 1479; Dillvo. 
Conf. 54. 
Sea- shore. 
Thallus 3 or 4 inches long, branched, bright red when 
young; purplish brown when older; branches cylindrical, 
alternate. 
