THE MARINE BOTANIST. 



extremity. Fructification rare. Grows between 

 tide-marks, on stones, or parasitic on other algae. 

 Annual. Spring and Summer. Found all round 

 the coast. 



STEIARIA. 



Named from the transverse strice formed by the fructification. 

 ^^ Frond filiform, tubular, continuous, membrana- 

 ceous, branched. Fructification, Groups of spores 

 forming transparent lines." — Grev. 



STRIARIA ATTENUATA.— SLENDER 

 STRIARIA. 



Fronds tufted, from three to twelve inches high, 

 set with many lengthened, spreading, simple, or 

 nearly so, opposite branches, much narrowed off 

 at their insertion, and at the tips. Sometimes a 

 second series of such branches is produced; in 

 the Devon plants they arise in whorls of three. 



