104 



tinuation of the basal articulations. Branches are produced from nodes 

 in an alternate (iwt diclwtoinous as described by Martens) manner 

 and often 3-5 (sometimes 7-9 in lower portion, but mostly 2-3 

 upwards) arise from the same node. They are erecto-fastigiate and 

 terminate in blunt apices. Lengths of articulations are longer in 

 lower branches and shorter in upper ramuli. They vary in length 

 from five to eleven times as broad. Substance is somewhat rigid and 

 the plant does not adhere to paper in drying. Colour blackish 

 brown or greenish in drying. 



Hab. : On rocks, stones, shells etc. near high tide. Sugashima 

 (Prov. Shima), Prov. Totomi, Prov. Boshyu ; Yokohama (Martens). 



PL. LXXX, Fig. 1-7. Fig. 1 : fronds of Cladophora rugiilosa 

 Martens in nat. size. Fig. 2 : one of smaller fronds detached, \. 

 Fig. 3: upper portion of branch, . Fig. 4-: basal portion of frond 

 and root like continuation, \. Fig. 5 : annular constrictions of the 

 basal portion of frond, ". Fig. 6 : portion of upper branch produc- 

 ing three branches from the same node, ? ~. Fig. 7 : portion of lower 

 branch bearing nine branches at the same node, "~ ; one of the 

 branches is shown to have an intercalary septum. 



Cladophora rugulosa Martens. 



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 ' ffl^Z'J? il- 9 (4-5 mm ft 9 ffj gS'J.SSlS^^ESI^ [10 



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