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are subaequal to breadth or i}4-2 times as high as broad. 

 Gametes are formed in the cells of the upper portion of frond. 

 Colour herbaceous green. Substance thin ruembranaceous. 



Hab. : On stones and wood works, left bare by the tide. 

 Widely distributed. 



Several forms are met with, of which forma crispata, with 

 edges much crisped and folded, and forma lanceolata, with edges 

 even or plicate, not crisped seem to be more common. In one or 

 the other of these forms the species seems common mostly on the 

 Pacific coast of this country. It is abundantly found in winter and 

 spring usually in brackish water in calm, places as Tokyo bay. 



PL. CXXXVIII. Fig. 1: fronds of Enteromorpha Linza (L.) 

 J. Ag. forma lanceolata, -*-. Fig. 2 : frond of forma crispata, 

 unfolded, -J-. Fig. 3 : young simple frond, for the most part tubular 

 within, but here and there already united, -]-. Fig. 4 : cross-section 

 of free marginal portion, ^f 3 . Fig. 5 : cross-section of the median 

 part united, ^p. Fig. 6 : surface view of membrane, highly magd. 

 Fig. 7 : gametangia, highly magd. Fig. 8-10 : surface view of 

 different parts of one and the same frond, ^ ; 8: upper membran- 

 ous portion; 9: just above rooting-cell region; 10 : basal rooting 

 cells. 



Enteromorpha Link 1820. 

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