See. GOXGYLOSrEi;.AIE.E. ( 49 ) Fam. CKYPTONEMIACE.E. 



Plate LXXXV. 

 CYSTOCLONIUM PURPURASCENS.— iT///;:. 



Gen. Char. — Frond cartilaginous, filifonn, composed of two strata : that forming the 

 axis, of minute oblong cellules arranged in densely packed longitudinal series, 

 around which are arranged numerous series of larger somewhat ovate polygonal 

 cells, smaller to the circumference and coloured. Fructification of two kinds, on 

 distinct plants : 1. Spherical tubercles, imbedded in the frond, containing minute 

 spores attached to a central placenta ; 2. Zonate tetraspores, immersed among the 

 surface cells of the ramuli. Name from kvcttls, " a vesicle or bladder," and 

 K\(i)j/iov, "a little branch," alluding to the immersed tubercles. 



Cystoclonium 2^ur2mrasce7is. — Frond much branched ; branches irre- 

 gularly alternate, shorter upwards ; and, as well as the stem, everywhere 

 clad with slender much divided branchlets. 



Cystoclonium purpurascens. — Kiitz. Phyc. Gen. p. 404, t. 58, f. 1 ; /. G. Agardh, 

 Sp. Gen. Alg. vol. ii. p. 307 ; Harv. N. B.A. part 2, p. 170. 



Htpnea purpurascens. — Harv. P. B. jjlate 116 ; Harv. Man. p. 131 ; Harv. Syn. 



p. Ill ; Atlas, plate 43, fig. 195, 

 Gbacilaria purpurascens. — Ch'ev. Alg. Brit. p. 122. 

 Plocaria purpurascens. — Endl. 3rd Suppl. p. 51. 

 Gigabtina purpurascens. — Lamour. Ess. p. 136 ; Lyngh. Hyd. Dan. p. 46, t. 12 ; 



Grev. Fl. Edin. p. 290 ; Hook. Br. Fl. vol. ii. p. 299 ; Harv. in Maik. 



Fl. Hib. part 3, p. 200; Ha7-v. Man. 1st edit. p. 73; Wyatt, Alg. 



Danm. No. 74. 



Sph^rococcus pjurpurascens. — Ag. Sp. Alg. vol. i. p. 318 ; Ag. Syst. p. 236 ; 

 Spreng. Syst. Veg. vol. iv. p. 339 ; HuoL Fl. Scot, part 2, p. 134 ; Fl. 

 Dan. t, 1835. 



Ftjcits purpurascens. — Huds. Fl. Angl. p. 589 ; Sm. E. But. t. 1243 ; Turn. Syn. 



p. 35T ; Turn. Hist. Fuc. t. 9. 

 FucTTS tuherculatus. — Lightf. Fl. Scot. p. 226. 



Yar. (3. cirrhosa. — Branches hreg'ular and much distorted, the ajDices 

 lengthened into tendi-ils which clasp surrounding objects. 



CrsTOCLONiDM purpurasccns, 13. — /. G, Agardh, Sp. Gen. Alg. vol. ii. p. 308 ; Harv. 



N. B. A. part 2, p. 170. 

 HrPNEA purpurascens, fi. — Harv. P. B. descr. plate 116. 

 Fncos tuberczdatus, /3. — Lightf. Fl. Scot. p. 927. 

 GiGARTiNA purpurascens, P cirrliosa. — Lyngh. Hyd. Dan. p. 46. 

 Hab. — On rocks, stones, old shells, &c., within tide-marks. Common. Annual. 

 Summer. 



Geogr, Dist. — Atlantic shores of Europe and North America. 



VOL. II. . H 



