166 Mr George W. Traill 07i the [sess. lii. 



97. Himanthalia lorea, Lyngb. 



On rocks at low water at exposed places. All the 

 year. Fruit in summer. Spores escape in August. 



98. HydrolapcUhum sanguineum, Stack. 



Growing at 8 and 12, under projecting ledges of rock in 

 the shade, near low- water mark; also in deep rock 

 pools: rarely on other Algse. Larger specimens 

 cast ashore from deep water. Biennial. Fruit from 

 November to March inclusive. 



99. Jania rubens, Lx. 



On Algre between tide marks, according to Dr M'Bain. 



100. Laminaria Clonstoni, Le Jolis. 



Cast ashore from deep water. Perennial. Fruit in 

 winter. 



101. Laminaria fiexicaulis, Le Jolis. 



On rocks at low-water mark. Perennial. Fruit in 

 winter. 



102. Laminaria Phyllitii, Lx. 



In pools near low-water mark, also in deep water. 



Eather uncertain in its appearance. Annual, spring 



and summer. 

 10.3. LaTTiinaria saocharina, Lx. 



In pools near low-water mark, also in deep water. 



Sometimes epiphytic. Fruit in summer and 



autumn. 



104. Laurencia hyhrida, Lenorm. 



Common on exposed rocks, and in pools, at about 

 half-tidu level ; rarely epiphytic. All the year. 

 Tetraspores in winter and spring ; ceramidia in July. 



105. Laurencia 'pinnatiflda, Lx. 



Common on rocks at exposed places at low-water mark; 

 sometimes epiphytic. All the year. Tetraspores 

 in winter and spring ; ceramidia in July. 



106. Leathesia tuheriformis, Gray. 



Common, especially at ?>, from about half-tide level to 

 low- water mark, on Algu) and rocks in the shade. 

 Annual, May to October. 



107. TAloHiiihoii Lartiiiuirim, Harv. 



Epijjhytic on Alaria escidenta at 2, 7, 8, 12, &c., in 

 pools near l(jw-water mark; always submerged. 

 Ainniid, .June to Octoljcr. Fruit in Ausjust. 



