99 



Gelidium pacificuin Okam. n. sp. 



Nom. Jap, : 0-bttsa. 

 PL. CXXVI-CXXV1I, Fig. 9-11. 



Diagn. : Fronds large, linear, ancipito-compressed, 3-4 times 

 pinnately branched in an alternate or opposite manner. Branches 

 very patent, flexuose, longer and shorter mixed, shorter ones ap- 

 pearing like ramuli which are loaded with simple or divided ramelli 

 and longer ones again pinnated in the similar manner as other 

 branches. Cystocarps swollen beneath the apices of ramelli, either 

 terminated with simple or branched, pointed or expanded apices. 

 Tetrasporangia formed in sori in roundish or more or less ex- 

 panded ramelli. 



Hob. : On rocks in the depth of 3-1 1 fathoms. Miyake Isl., 

 Kodzu Isl. (3 fath.) ; Amatsura and Nemoto (8-n fath., Prov. 

 Boshyu) ; Shirahama and Inatori (Prov. Idzu) ; Prov. Sagami. Fruits : 

 summer. 



Descrip, : Fronds high, often 30-40 cm, usually 15-20 cm 

 long, caespitose, linear, ancipito-compressed, rising from fibrous 

 roots, much branching a little above the root in 3-4 times pinnate 

 manner. Branches of every order are alternate or opposite, very 

 patent, longer and shorter mixed ; shorter ones appear as if ramuli 

 which are furnished with simple or branched ramelli and longer 

 ones are again pinnated in the similar manner as other branches. 

 Larger branches are slightly flexuose and terminal portions are 

 somewhat naked. Fruits of both kinds formed in ramelli which 

 are often aggregated. Tctrasporic sori are produced in roundish, 

 ovate or oblong, more or less expanded ramelli. Cystocarps are 



