Sr,K. GONGYLOSPERME.^.. (141) Fam. CERAMIACEiE. 



Plate CXVI. 

 CORYNOSPOEA PEDICELLATA.— ^. G. Acj. 



Gen. Char. — Fromls filiform, cylindrical, dichotomous, joints pellucid, single-tubed. 

 Fructification of two kinds, on distinct plants: 1. Favellse, unknown to us; 

 2. Tetraspores, on short pedicels, opposite the ultimate dichotomies. Name, from 

 Kopvvi), "a club;" and trTropo, "a seed." 



CoRYNOSPORA ^wdicellata. — Stems filiform, cylindrical, mucli branched ; 

 branches dichotomous, setaceous, beset from near the base with short 

 once or twice dichotomous ramuli. 



CORYNOSPORA ^crficeKato. — /. G. Agardk, Sp. Gen. Alg. vol. ii, p. 71. 



QiLLhiiWA.^sio's pedicellatum.—Ag. Sp. Alg. vol. ii. p. 174; Wyatt, Alg. Dcinm. 

 No. 94 ; /. Ag. Alg. Medit. p. 73 ; Kiitz. Phyc. Gen. p. 371 ; Endl. 

 3rd Suppl. p. 34 ; Harv. in Hook. Br. Fl. vol. ii. p. 347; Haw. in Mack. 

 Fl. Rib. part 3, p. 217 ; Harv. P. B. plate 212 ; Harv. Man. p. 182 ; 

 Hurv. Si/n. p. 155 ; Atlas, plate 60, fig. 283. 



Callithamkion clavatum.—Ag. Sp. Alg. vol. ii. p. 180 ; /. Ag. Alg. Mcd'it. 

 p. 73 ; Kiltz. Phyc. Gen. p. 371 ; Mont. An. So. Nat. 1839, p. 166 ; 

 Endl. 3rd Suppl. p. 34. 



Callithamnion Perreymondii. — Duly, Mem. vol. ii. t. 4, f. 5. 



Callithamkion hotryticum. — De Not. (fide Lenorin.). 



Griffithsia irregularis. — Kiitz. Actien. 1836. 



Ceramium ^jed/crftowm. — Ag. Syst. p. 137. 



Ceramium clavcegerum. — Bonii. Hyd. loc. in An.Mus. Par. 1825, p. 90. 



Conferva petZiceZ^a^a. — E. Bot. t. 1817 ; Dillw. Conf. t. 108. 



Hab. — On rocks, stones, old shells, and pieces of wood in deep rock-pools. Dredged in 

 from three to eight fathoms water. Not uncommon all round the coast, 



Geogb. Dist. — Atlantic shores of France ; Mediterranean Sea. 



Description. — Root, a minute disc, accompanied with fibres. Fronds 

 filiform, cylindrical, much tufted, long, slender, much branched from near 

 the base, two to four inches long, as thick as bristles ; branches setaceous, 

 slender, erecto-patent or suberect, everywhere beset with short, once or 

 twice dichotomous, suberect ramuli, which are suberect, straight or some- 

 what incurved, cylindrical, the apices obtuse, the axils acute, every joint 

 emitting its ramulus in a somewhat alternate manner. Favellse imknown 

 to us. Tetraspores ("?) obpyriform, on short stalks, situated at the axils 

 of the ramuli, and containing a single spore. Substance, " when freshly 



