― 126 ― 



一 し a'cnmum pciinata Roth Catalecta Bot. II, p. III、 iiSod). 一 Poly- 

 siphonia pcnnata J. Ag. Alg. Med. p. 141 ； Id. Sp. Alp-. II， p. 928 ； 

 Kuetz. Sp. Alg. p. 803 ； Id. Tab. Phy に XIII, t. 23, f. e-f ; Zanard. 

 Icon. Phy に Aclr. III， p. 113， t. ioS， A; Ardiss. Phyc. Medit. I， p. 

 365 ； Hauck Meeresalg. p. 238. — Polysiphonia pinnulata Kuetz. 

 Phyc. Genen p. 416; Id. Sp. Alg. p. 803 ； ki Tab. Phyc. XIII, 

 23， f. a-d ？ 



Hah. : On rocks between tide-marks. Kobama (Prov. Kadzu- 

 sa), Prov. Saga mi. Tetrasporangia : — Spring. 



PI. XXVII, Fio-. i-i I. Fic^, 1: fronds of Pterosiphonia pcnnata^ 

 \ ― Vvj. 2 : lower rooting portion of frond showino- roots, r、 ぜ 一 Fig. 



3 : portion of frond to show general appearance of ramification, ま. 一 Fig. 



4 : portion of frond showing the arrangement of simple and compound 

 pinnse rising from every second joint, ；ゃ. 一 I'ig*. 5 : apical prowiii:?* 

 portion of frond with the apical cell, a ； the distichous arrangement of 

 branches is here sliphtly disturbed as it is seen in that of the upper- 

 most two young branches, . — np-. 6 ： surface-view of a branch 

 showing the congenital ！ growth, -j"^. — Fig. 7-9: cross-sections of dif- 

 ferent parts of different branches ； ，9 shows the section of con- 

 genitally united portion ； "。• — ト i ひ. 10 ： portion of branch showing- 

 tetrasporiferous ramuli, 气ュ. 一 hip-, H ： cross-section of a ramulus bear- 

 ing tetrasporanp-ia ； a、 central axis ； p, pericentral cell which carries a 

 tetrasporano-ium (not shown in the figure) above ； d, d、 cover-cells oi 

 a tetrasporanpium, 



