THE MARINE BOTANIST. 133 



stem often undivided, and set with opposite or alter- 

 nate branches, the lower ones being* the longest, and 

 frequently bearing a second series j all having nu- 

 merous linear, club-shaped, obtuse ramuli, one or 

 two lines in length, and very much attenuate at 

 base, resembling the leaves of a Sedum ; the whole 

 frond marked, at short distances, with more or less 

 distinct transverse strise. Substance somewhat 

 gelatinous, quickly decomposing. Fructification as 

 in the above. Colour a pale fugitive pink or 

 yellowish. Readily distinguished from the preceding 

 by the ramuli tapering towards the base, and ft-om 

 the following by their being obtuse, " Var. /3 squar- 

 rosa : tufts intricate, fronds irregularly branched ; 

 the branches arched, and more or less recurved ; 

 ramuU frequently attenuated at the apex. May, 

 perhaps, be mistaken for i. tenuissima, but it 

 rarely, if ever, happens that all the ramuli are 

 drawn into long points, or all the branches arched 

 and recurved ; but the majority are in these con- 

 ditions." — Harv. Grows on shells, &c., in pools 

 near low water-mark, generally where the surface 



