THE MARINE BOTANIST. 35 



GENERA OF THE LAMINARIA TRIBE. 



Alaria, Leaf with a disdnct midrib. 

 Laminaria, Frond without a midrib. 

 Chorda, Frond cylindrica,!, unbranched, hollow, 

 and constricted at intervals. 



ALARIA. 



Name from Ala, a wing, in allusion to the winged leaflets 

 at the base of the frond. 



^' Frond membranaceous, furnished with a per- 



current midrib, the stem pinnated with distinct 



ribless leaflets. Fructification pear-shaped, spores 



vertically arranged in the thickened leaflets." — 



Greville. 



ALARIA ESCULENTA— EDIBLE ALARIA. 

 " DABERLOCKS." 

 Stevi thick, winged at the base with flat, sword- 

 shaped, nerveless leaflets. Frond very long, pene- 

 trated throughout its whole length by the stem, 

 which is visible on both its surfaces, the margin 

 ^^ wonderfully plaited and curled." Dr. Greville 



