160 



ChondrOCOCCUS japOniCUS (Harv.) Okam. 

 Mom. Jap. : Namino-hana. 

 PL. CXC. Fig. 15. 



Clwndrococctis japonictts (Harv.) Okam. Alg. Jap. Exsic. no. 35 

 (1899). Matsumura and Miyoshi Cryptog. Jap. Icon. Illustr., 1901, vol. I. 

 no. 12, pi. 58. Chondroc. ? japonicus (Harv.) De Toni Phyc. Jap. Nov. 

 (1895) p. 39; Id. Syll. Alg. IV, p. IGJl.Desmia japonica Harv. Char, 

 new Alg. (1859) no 23; Okam. in Bot. Mag. Tokyo, 1893, p. 321 

 (tetraspore). 



Mode of ramification, charatters of the both kinds of fruits are all 

 similar to those of C/i. Hornenianni, only differing in the breadth of 

 rond and form of ultimate pinnellae or marginal laciniae. Fronds are 

 compresso-flat, broadly linear, 2-3 mm. broad, with often blunt and obtuse, 

 crenulated and irregularly placed pinnellae or marginal processes. Often 

 there are many forms having the appearance intermediate between the 

 two species which are to be separated scarcely one from the other, 

 fronds being more narrow and branches being sharply pointed. 



Hab. : Boshyu and Sagami. 



PL. CXC, fig. 15: frond of Chondrococcns japonicus (Harv.) Okam. 

 n nat. size. 



