THE MARINE BOTANIST. 



LEATHESIA. 



73 



Named in honour of the Bev. G. R. Leathes, a British 

 Naturahst. 



Frond globose or lobed, fleshy and cartilaginous, 

 composed of jointed, colourless, forked filaments, 

 their tips forming the fleshy coating of the frond, 

 are coloured and tufted. Fructification. Spores 

 attached to the coloured tips of the filaments. 



LEATHESIA TUBERIFORMIS. — TUBER- 

 SHAPED LEATHESIA. 



Fronds fleshy, hollow tubers spreading over 

 rocks, &c., between tide-marks abundantly ; olive- 

 brown in colour, and somewhat resembling the 

 root of Laminaria bulbosa. Annual. Summer. 



LEATHESIA BERKELEYL— BERKELEY'S 

 LEATHESIA. 



Fronds dark brown, depressed, soft and fleshy, 



