*288 ALGiE INARTICULATE. [Rhodomenia. 



Sp. Alg. v. 1. p. 186. Grev. Crypt. Fl. t. 32-2. (excl. tlie figs. 

 2 and 3.) 



Li the sea. Orkney, Rev. C. Clouston. Isle of Bute, Dr. Greville. 

 Larne, near Belfast, Dr. Drummond. 0. Summer.—" Two to four 

 inches in length, of a most beautiful rose-pink, which changes to pur- 

 plish in drying. This species is clearly distinguished from the two sub- 

 sequent ones by the spots of ternate granules being scattered over the 

 disk of the frond. The figures 2 and 3 in the Cryptogamic Flora 

 (t. 322) belong to A r . Gmelini, many specimens of which closely resem- 

 ble the present in general outline." (Grev.) 



5. N. Gmelini, Grev. (marginal-fruited Nitophyllum); stem 

 short passing into a frond with a roundish outline deeply cleft 

 the main segments broadly wedge-shaped vaguely subdivided 

 faintly marked with vague flexuose veins, the margin entire, spots 

 of ternate granules irregular marginal. Grev. Alg. Brit. p. 82. — 

 Delesseria Gmelini, Lamour. Fss. p. 36. — Fucus laceratus, y. 

 Turn. Hist. Fuc. v. \. p. 153. 



South coast of Devon, Mrs. Griffiths, llfracombe, Miss Hill. Larne, 

 near' Belfast, Dr. Drummond. 0. Summer. — A beautiful and very dis- 

 tinct plant, long known to Mrs. Griffiths, who finds it abundantly in 

 Devonshire. It rarely exceeds 2 or 3 inches in length. In substance 

 and marginal fructification this approaches the following species; in the 

 general outline and comparative breadth of the frond it approaches the 

 preceding ones. Dr. Greville observes that the Irish specimens, which 

 I have not seen, are twice the size of English ones. 



6. N. lacerdtwn, Grev. (lacerated Nitophyllum); frond mem- 

 branaceous very tender plane veiny mostly diehotomous, seg- 

 ments sublinear thin apices rounded, the margins lacinulated 

 waved and bearing the oblong spots of granules. — Grev. Alg. 



Brit. p. 83 Delesseria lacerata, Ag. Sp. Alg. v. 1. p. 184. — 



Fucus laceratus, Gmel. — Turn. Syn. Fuc. p. 154, Hist. Fuc. 



t. 68. E.Bot. L 1067. — Fucus crispatus, Huds F. endivifolius, 



Light/. Scot. p. 948. t. 32. — /3. uncinata; fronds narrow, lesser 

 segments minute. Turn. 



Common on the coasts of Great Britain.— ,3. Yarmouth, Mr. Turner. 

 0. — A very well marked, yet a variable plant in size and in the relative 

 breadth of its frond and the more or less copious segments and lacinulse. 

 Dr. Greville well observes that " the whole frond has the power of at- 

 taching itself by the edges and creeping, as it were, upon the rocks and 

 plants in its way; so much so, that it can hardly be gathered without 

 some resistance and laceration." 



26. Rhodomenia. Grev. Rhodomenia. 



Frond plane, membranaceous, fine pink or red, quite veinless, 

 sessile, or with a short stem which expands immediately into 

 the frond. Fructification: — 1. hemispherical, scattered capsules; 

 2. minute, ternate granules, spreading over the whole or some 

 part of the frond (not in defined spots). Grev. Alg. Brit. p. 84. 



