57 



in proliferous younger branches not in older segments, while in 

 Gr. filicina, tetraspores and cystocarps are equally scattered over 

 the frond. 



Thus, the present alga seems to me to be an intermediate 

 form between Gr. filicina and the section to which Gr. dictotouia 

 and others belone. 



& 



PL. CXVI. Two fronds of Grateloupia divaricata Okam., 

 nat. size. 



PL. CXVII, Fig. 1 2-1 8. Fig. 12: portion of cross-section ot 

 the frond, ^ fi . Fig. 13 : outline of cross-section of stem, f . Fig. 

 14- : tetrasporic ramuli, \. Fig. 15 : tetrasporic ramuli magd. f . 

 Fig. 16 : portion of the cross-section of a tetrasporic ramulus, ^f 5 . 

 Fig. 17: ramuli bearing cystocarps, \. Fig. 18: cystocarps, ^. 



Grateloupia divaricata Okam. 



*> ft <D !). 

 %f CXVI CXVII HHJK, 12 iSHH. 



7-20 cm ft ? , ?fj * 30 cm 



^FiSs'.ttJiB''**^^^ * " 7 ]H SS ^ tS ^ ? ; ft ^ i ^ i-i-5 

 mm ^ ^ jft F ^ v K * , S| ' 3 mm El Jt ^ A' =* b 7* 9 . M v "^ 



J: 1C ^ T ^ 3 J * J . 



-frm* fWWiWi? 1- * ^ b r ^ K -t , j -/i-v ^ ^ m iw 



