THE MARINE BOTANIST. 315 



ENTEROMORPHA COMPRESSA.— COM- 

 PRESSED ENTEROMORPHA. 



Fronds from six to twelve inclies long, vary- 

 ing greatly in breadth. In the variety ^ yro- 

 lifera^ the frond is narrow, with many slender 

 branches ; much contracted below, gradually widen- 

 ing upwards, and obtuse at the tips, by which 

 character, it is stated, this variable plant may be 

 known from the four next species ; the broad 

 varieties which very nearly resemble some forms of 

 E. intestinahs, are distinguished from that species 

 by being always branchedy though often very 

 slightly, whereas the latter is invariably simple. 

 Colour a pale or full green. Grows on rocks and 

 stones between tide-marks, very frequent, especially 

 where fresh-water streams run over the beach. 

 Annual. Spring and summer. 



0. S. E, Linhiana. In the sea at Appin, 

 Argyleshire. Annual. Summer. " Frond cylin- 



