Ser. MelanospekmbjE. Fam. Laminariea. 



Plate XLV. 



LAMINARIA FASCIA, A 9 . 



Gen. Char. Frond stipitate, coriaceous or membranaceous, flat, undivided 

 or irregularly cleft, ribless. Fructification ; cloudy spots of spores, 

 imbedded in the thickened substance of some part of the frond. 

 Laminaria (Lamour.) — from lamina, a thin plate, in allusion to the 

 flat frond. 



Laminaria/^c^ Ag.; stem very short, setaceous, gradually expanding 

 into a membranaceous, broadly-oblong, wedge-shaped, lanceolate, or 

 linear frond. 



Laminaria fascia, Ag. Syn. p. xix. Ag. Sp. Alg. vol. i. p. 1 22. Syst. p. 273. 

 Wyatt. Alg. Danm. no. 157. Harv. Man. p. 25. E. Bot. Suppl. t. 2845. 

 Hook.fil. Fl. Ant. ined. Endl. 3rd Suppl. p. 27. 



Laminaria debilis, Ag. Spec. vol. i. p. 120. Syst. p. 273. Grev. Crypt t. 277. 

 Grev. Alg. Brit. p. 35. t. v. Hook. Br. Fl. vol. ii. p. 272. Harv. Man. p. 25. 

 Endl. 3rd Suppl. p. 27. 



Laminaria cuneata, Suhr. 



Laminaria papyrina, Bory. in Diet. Class d'Hist. Nat. vol ix. p. 189. 



Fucus fascia, Fl. Ban. t. 768. Turn. Syn. vol. i. p. 186. Both. Cat. Bot. 

 vol. ii. p. 161. 



Hab. On sand-covered submarine rocks and stones in the sea, near low- 

 water mark. Annual. Summer. North of Ireland, Mr. Ii. Broton, 

 (Turner). Carrickfergus, Mr. Templeton. Western Islands of Scotland, 

 Mr. Chalmers. Lame, Br. Drummond. Antrim coast, Mr. D. Moore. 

 Sidmouth and Torquay, Mrs. Griffiths. Mounts Bay and Salcombe, 

 Mr. Ralfs. Malahide, Mr. McCalla. Saltcoats, Rev. D. Land sho rough. 



Geogr. Distr. Atlantic shores of Europe from Norway to Spain. Mediterranean 

 Sea, C. Agardh. Falkland Islands, Lyall. 



Descr. Root a small disc. Stem as thick as hog's bristle, one to four lines in 

 length, cylindrical at the base, compressed in its upper half, and gradually 

 widening into the cuneate base of the frond. Frond very variable in form, 

 two to twelve inches long, and from a quarter of an inch to an inch and a half, 

 or two inches, in breadth, sometimes abruptly cuneate at base, sometimes 

 much attenuated, either lanceolate, oblong or linear, or oblong-ovate; in 

 some cases remarkably obtuse, in others tapering to a more or less acute 

 point, or rarely somewhat lobed at the apex, waved or Hat at the margin, 

 membranaceous, smooth, rather glossy. Colour varying from a greenish to 

 a brownish olive, sometimes bright, sometimes very dingy. Fruit unknown. 

 Cellules of the interior of the frond narrow -oblong, twelve-sided, pellucid; 

 those of the surface very minute, arranged in areoli, four cellules in each 

 areolus. 



The first notice of this species occurs in the ' Flora Dani 



