

Net. Melaxosi'eume.v.. Fam. Landnariete. 



Plate CXCII. 



LAMINARIA PHYLLITIS, Lamm. 



Gen. Char. Frond stipitate, coriaceous, or membranaceous, Hat, 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 phyllitis) stipe short, subcompressed, gradually expanding 

 into a linear-lanceolate, delicately membranaceous, undivided frond. 



Laminaria phyllitis, Lam. Ess. p. 22. Lyngb. Hyd. Ban. p. 23. Ag. Sp. 

 Alg. vol. i. p. 121. Ag. Syst. p. 273. Spreng. Syst. Veg. vol. iv. p. 325. 

 Grev. Alg. Brit. p. 34. Hook. Br. II. vol. ii. p. 272. Harv. in Mack. Ft. 

 Rib. part 3. p. 171. Endl. 3rd Suppl. p. 27. Kiitz. Phyc. Gen. p. 345. 



Laminaria saccharina (young state), Hook. Fl. Scot, part 2. p. 98. 



Laminaria saccharina, var. attenuata, Grev. Fl. Edin. p. 282. 



Fucus phyllitis, Stack. Ner. Brit. t. 9. Turn. Syn. p. 193. Turn. Hist. t. 164. 

 E. Bot. t. 1331. Esper, Ic. t. 149. 



Fucus phyllitidis folio, Rail. Syn. p. 40. 



Uab. On rocks and stones, in pools left by the tide ; also in four or five 

 fathoms water. Biennial? Summer. Not uncommon. Coast of 

 Dorsetshire, Fulteney. Portland Head and Tenby, StacJchouse. Sid- 

 mouth and Torquay, Mrs. Griffiths. Yarmouth, Mr. Wigg. Coast of 

 Sussex, Mr. Borrer. Orkney, Rev. J. H. Follexfen and jDr. Mc'Baiu. 

 Frith of Forth and Stall'a, JDr. Greville. Ardrossan, liev. D. Lands- 

 borough. Lame, Mr. Templeton. Bantry Bay, Miss Hutchins. 

 Howth and Balbriggan, Miss Gower. Kingstown, Mr. T, N. Cole. 



Geogr. Distr. Atlantic shores of Europe, from Norway to France. 



Descr. Boot consisting of thick, branching, and clasping fibres. Stem, an inch 

 or two in length, slender, cylindrical below, becoming compressed upwards, 

 and gradually widening into the much attenuated base of a linear lanceolate 

 frond. Frond from six or eight inches " to three or more feet in length, 

 and one to six inches in width," (Grev.) delicately membranaceous, Hat, or 

 slightly waved at the margin, undivided, tapering much, and gradually to 

 each extremity. Fructification, I have not seen. Substance thin, but 

 tough, glossy, and more or less perfectly adhering to paper. The frond is 

 traversed internally by a double stratum of large air-cells, whose walls, as 

 well as the surfaces of the frond, are composed of minute cellules. Colour, 

 when quite fresh, a clear, brown-olive, soon changing in fresh water to 

 green, which is also the colour of dried specimens. 



This plant has been observed by botanists from a very early 

 >eriod, and almost invariable kept distinct from L 8acckarina s 



