Ser. MELANOSPERME^. (145) Fam. ECT0CA11PE.E. 



Plate CLXIX. 

 CLADOSTEPHUS VEKTICILLATUS.— ^^. 



Gen. Char. — Fronds cartilaginous, not jointed; ram uli jointed, whorled, short, nearly 

 simple. Fructification : "elliptical utricles," borne on "accessary ramuli," produced 

 on the old fronds. Name from K\d5os, " a branch," and <TTi<pos, "a crown." 



Cladostephus verticillatm. — Whorls rather distant, ramuli much 

 incurved, with one or two spine-like ramelH on the outer edge near the 

 apex. 



Cladostephus vertidllatus. — Ag. Syn. Int. p. 25 ; Lyngl. Hyd. Dan. p. 102, t. 30 ; 

 Hook. Fl. Scot. vol. ii, p. 89 ; Grev. Fl. Edin. p. 312; Wyatt, Alg. 

 Damn. No. 82 ; Harv. in Hooh. Br. Fl. vol. ii. p. 322 ; Harv. in 

 Mach. Fl. Rib. part 3, p. 179 ; Harv. P. B. plate 33 ; Harv. Man. 

 p. 54 ; Harv. Syn. p. 48; Atlas, plate 14, fig. 58; Harv. N. B. A. 

 part 1, p. 135; /, 0. Agardh, Sp. Gen. Alg. vol. i. p. 43. 



Cladostephus rnyriophyllum. — Ag. Syst. p. 169; Ag. Sp. Alg, vol. ii. p. 10; Endl. 

 3rd Suppl. p. 24 ; Kutz. Phyc. Gen. p. 294, t. 18, f . 1 ; /. Ag. Alg. 

 Medit. p. 30. 



Ceramium verticillatum.—D.C. Fl. Fr. vol. ii. p. 39; Ducluz. Ess. p. 49. 



Conferva vert icillata.— Light/. Fl. Scot. p. 984 (1777); Huds. Fl. Angl. p. 653; 

 Witk. Br. PI. vol. iv. p. 133 ; Dillw. Conf. t. 55 ; E. Bat. t. 1718 

 and 2427, f. 2 ; Both, Cat. Bot. vol. iii. p. 309. 



Conferva myriophyllum. — Roth, Cat. Bot. vol. iii. p. 312, t. 12, f. h. (1806). 



Conferva ceratophyllum. — Roth, 1. c. p. 311. 



Fucus vertidllatus. — Wulf. Crypt. No. 15, t. 1. 



Hab. — On rocks, stones, &c., within tide marks. Perennial, fruiting in winter. Very 

 common. 



Geogr. Dist. — Atlantic and Mediterranean shores of Europe, abundantly; Cape Frio, 

 Brazil (Tilesius). 



Description. — Root, a minute disc. Frond from a slender base, 

 filiform, cylindrical, much branched ; branches mostly dichotomous, some- 

 times trichotomous, erecto-patent, slightly incm-ved, inarticulate, every- 

 where covered with whorls of short, articulated, incurved ramuli, from 

 a slender base gxadually thickening to a little beyond the middle, then 

 tapering to a rather acute point, much incurved ; with one or two rigid, 

 conical, spine-like ramelli, projecting from the outer edge near the apex. 

 Articulations about as long as broad, the surface striated longitudinally, 



VOL. III. D 



