Plate VIII. 

 Fig. 29. LAMINAPJA PHYLLYTIS. 



Colour. Pale^ yellowisli green. 



SiihstancG. Thin and tender; delicately membranaceous; retaining tliese 

 characters when old. 



Character of Frond. A flat^ leafy expansion; ribless; growing from a stem. 

 Stem, always short in proportion to the ex2oansio7i. Expandon, ribbon- 

 like_, very long and narrow^ tapering gradually at each end. Margins 

 wavy at times, yet scarcely as much curled as in L. saccharina. Root, 

 fibrous. 



Measurement. Stem, from 1 to 2 inches long. Expansion, from 8 inches 



to 3 feet long; from 1 to 6 inches wide. 

 Fructification. Minute seeds [sjpores) imbedded here and there in the surface 



of the frond, thickening it, and forming cloudy patches. 

 Hakitat. Our coasts generally. Between tide-marks, and at extreme low 



water, on rocks and in pools left by the tide. Not uncommon. 



The tapering ends and more marked narrowness throughout, are guides to 

 this plant, as well as its very delicate substance. When growQ to its greatest 

 length it never becomes leathery, coarse, or brown, like L. saccharina. Tufts 

 of it grow together among boulders at extreme iow-water mark, as on The 

 Spittais, Filey. 



Fig. 30. LAMINARIA FASCIA. 



Colour. Olive, or olive-brown. 



Siihstance. Membranaceous, but not quite so delicate as L. PJiyUytis. 



Character of Frond. A flat, leafy expansion; ribless; growing from a stem. 

 Stem, very short. Exjiausion, often wddening upwards, becoming 

 blunt at the end; sometimes narrow throuorhout: sometimes wider 

 below, and tapering upwards. Root, a minute disk. 



Measurement. Stem, when longest, ^ an inch; passing insensibly into the 

 frond. Expansion, from 4 to 12 inches long. Width, from I of an 

 inch to an inch or two. 



Fructification. Minute seeds {spores) imbedded here and there in the surface 

 of the frond, thickening it, and forming cloudy patches. 



Habitat. Our shores generally. On mud-covered rocks. Not uncommon. 



The little disk-like root stamps this species whenever it can be found; and 

 the thick, dark, olive hue is another strong feature, 



15 



