﻿PLATE XXIX. 



Cladophora Wrightiana Harv. 



CLADOPHORACE/E. 



Nom. Jap. Cha-shizuo-giisa. 



Cladophora Wrightiana Harv. Char. New Alg. in Proceed. Amer. 

 Acad., Vol. IV， 1859, p. 333, no. 43 ； Dickie Notes on Alg. in Journ, 

 Linn. Soc. Bot, Vol. XV, 1876， p. 451 ； De 丁 oni Phyc. Jap. (1895) 

 p. 60 ； Kjellm. IMarina Chlorophyc. fr. Japan p. 26 ； Okam. Al?. Jap. 

 Exsic, Fasc. I， no. 46. 



Fronds are densely tufted, erect and filiform, 25-40 cm. high, 

 about 0.5-0.7 mm. thick. 丁 he basal articulation is more or less 

 elongated into cylindrical stem (often 4 cm. long, 0.7-0.8 mm. 

 thick), which is annulately constricted at the base for a short 

 distance. From lower extremities of joints extraarticular, clecur- 

 rent root-fibres are emitted, which remain very short in upper 

 joints but becoming somewhat longer in lower portion of 

 frond. And those fibres emitted from lower portion of stem, 

 branch in an irregular manner and are septate at various 

 distances. Branches are produced from nodes in an alternate 

 manner and often 3-5 (mostly three upwards) arise from the 

 same node. They are fastigiate and terminate in blunt apices. 

 Lengths of articulations are longer in lower branches and shorter 

 in upper ramuli. They vary in length from three to eleven times 

 or more as broad. Substance is stiff when fresh, cells beinp- 

 provided with thick, lamellated walis, and the plant does not 

 adhere to paper in drying. Colour is deep bluish-green, fading 

 to reddish brown when dried and then presents glossy appearence. 



