Ser. RaoposPERME®. Fam. Spherococcoidee. 
Puate CXXVII. 
RHODYMENIA CILIATA, Grev. 
Gen. Cuar. Frond flat, membranaceous or subcoriaceous, ribless, veinless, 
cellular; central cells of small size; those of the surface minute, 
Fructification of two kinds on distinct individuals ; 1, convex tubercles 
(coecidia) having a thick cellular pericarp, and containing a mass of 
minute spores, on a central placenta. 2, tefraspores, either zoned or 
tripartite, imbedded among the cells of the surface, scattered, or form- 
ing cloudy patches. RopyMeNta (Grev.),—from péddeos, ved, and 
dpnv, a membrane. 
Ruopymenta c2/iata; frond thick, subcartilaginous, dull purplish-red, 
rising from a short stalk, lanceolate or forked, irregularly pinnated 
with lanceolate or bifid segments, which are attenuated at base; the 
margin, and often the disc, more or less furnished with subulate cilia, 
im which the tubercles are imbedded; tetraspores collected im cloud- 
like patches dispersed over the disc ; root branching. 
RuHopYMENIA ciliata, Grev. Aly. Brit. p.90. Hook. Br. Fl. vol. ti. p. 291. 
Wyatt, Alg. Danm. no. 67. Harv. in Mack. Fl. Hib. part 3. p. 194. Harv. 
Man. p. 62. Endl. 3rd Suppl. p. 51. 
CALLIBLEPHARIS ciliata, Kvitz. Phyc. Gen. p. 404. t. 62. IIT 
DE EsseERtIa ciliata, Lamour. Ess. p. 37. 
HatyMenIa ciliata, Gall. Dict. Sc. Nat. v.53. p. 361. 
SpH#rococcws ciliatus, 4g. Syn. p.28. Lyngb. Hyd. Dan. p.12.t.4. Ag. 
Sp. Aig. vol.i. p. 263. Ag. Syst. p. 221 Spreng. Syst. Veg. vol. iv. p. 334 
Hook. Fl. Scot. part 2. p. 103. 
Fucus ciliatus, Linn. Mont. Pl. p.136 and 519 (evel. syn. Gmel.). Syst. Nat. 
p- 718. Huds. Fl. Ang. p. 580. Lightf. Fl. Scot. p.944. Stack. Ner. 
Brit. p.90.t.15. Turn. Syn. vol.i. p. 169. Sm. E. Bot. t. 1069. Turn. 
Hist. Fue. t. 70. fig. a-e. Linn. Trans. vol. iti. p. 160. Hook. Iceland 
Tour. vol. ii. p. 347. 
Has. On rocks, in pools near low-water mark, and at a greater depth. 
Annual. Fruiting in winter. Frequent on the shores of England 
and of the south and west of Ireland. Near Belfast, Dr. Drummond. 
Rare in Scotland. Jona, Jzghtf. Elwich Harbour and Shapinsha, 
Orkney, Lieut. Thomas and Dr. Mc’ Bain. Jersey, Miss White and 
Miss Turner. 
GroGr. Distr. Northern Atlantic Ocean, along the shores of Greenland, Iceland, 
the Feeroe Islands, and of Europe from Norway to Spain. 
Derscr. Root composed of pale red, branching and grasping fibres. Fronds 
tufted, six to twelve inches long, rising from a short, cylindrical, simple, or 
rarely forked stem, variable in form. In some individuals the frond forms 
a simple, ovato-lanceolate subacute leaf, cuneate at base, and dentato-ciliate 
VOL, Il. C 
