88 THE MARINE BOTANIST. 



ECTOCARPUS. 



Name signifying external fruit. 

 Filaments capillary, jointed, olivaceous, or brown, 

 flaccid, without longitudinal strife (streaks). Fruit, 

 Either external or imbedded spores ; or lanceolate, 

 linear, or conical silicules (pod-like bodies) ; or 

 granular masses, formed in consecutive cells of the 

 branches." 



ECTOCARPUS TOMENTOSUS.— SPONGY 

 ECTOCARPUS. 



Filaments very fine, and twisted together into a 

 more or less branching spongy frond of an olive 

 green or dull brown colour. The stalked silicules, 

 obtuse and &mr-oblong in shape, distinguish this 

 species (microscopically) from others of the genera. 

 Grows on rocks, wood-work, and the larger algae. 



