172 



m m & na 



Hi 8&, ft ,KI if ^ SE.^ *Ji ;>L ifif ,'^ 



& ft & ?&, m s ^""^, *fi fr = m. n ME. 



XCVII [UK. 1 : I" If ! ^ , Symphyocladia gracilis (Mart.) 

 n 

 -3 : 



Falkcnb. / iff} ^ * ^ ^ * / , -L. 3 : 



6: | / ifM 



8 : f^ ^ 4 * ^ 7 J ' - 15, f . 9 rlPl 



Pterosiphonia fibrillosa Okam. n. sp. 



Nom. Jap. : Ke-hane-gusa. 

 PL. XCVIII. 



frond standing on the thallus of another alga, erect, with the 

 stem and main branches cylindrical, a little compressed above, pinnately 

 branched in alternate and distichous manner. Plants attain 5-10 cm 

 (rarely 15 cm) in height and stem and branches measure 1-1.5 mm in 

 diameter. Branches elongated, patent, very slightly flexuose, regularly 

 furnished with alternate pinnae which become shorter and shorter 

 upwards, so that the outline of a branch is linear-lanceolate. Pinnae 

 which slightly overlap each other are very densely decompound with 

 alternate pinnulae which are again decompounded in an equal man- 

 ner. Laciniae of pinnellae are incurved and further divide in similar 



