100 BRITISH SEA-T\'EEDS. [IManospermea . 



tiful kinds have lately been described and figured by Dr. 

 Greville, in the Annals of Natural History. 



The gulf-weed is eaten in China. In the East it is used 

 in salads, and with vinegar it furnishes a pickle. 



LICHIISTEJE. 



LICHINA, Agardh. 



Generic Character. Frond cartilaginous, blackish-green, dicho- 

 tomous. Fructification, roundish capsules of the same colour, 

 containing radiating monihform hues of pellucid seeds imbedded 

 in a gelatinous mass of filaments. — Greville. 



1 . LiCHINA PYGM^A. 

 2. CONPINIS. 



As 1 have adopted the systeroatic arrangement given by 

 Professor Harvey in the first volume of his ' Phycologia 

 Britannica/ and, as LicJiina is not found in it, these two 

 little plants are introduced as interlopers, without any re- 

 gard to system. Acharius and Sir J. E. Smith ranked the 

 latter one among lichens. Dr. Greville says, '^ In regard 

 to habit, the Lichinea touch closely on the boundary of the 

 lichens.''^ Beautiful and very instructive figures of both 



