5 2 



ches. Cystocarps prominent, borne on branchlets, scattered or often 

 a few together, globular, sessile. Colour red, turning to orange or 

 yellowish-green. Substance soft cartilaginous, gelatinous; the plant 

 adheres pretty firmly to paper in drying and dried specimens soon 

 decompose on reimmersion in water. 



Hab. : On rocks in sublittoral region; Shimabara (Prov. Hizen), 

 Shikano-shima (Prov. Chikuzen), Takashima (Prov. Bungo), Ichino-miya 

 (Prov. Noto). Fruits : summer. 



Structure of the frond : In longitudinal section of the apical 

 portion of a yctmg branchlet we find longitudinal axis consisting of 

 large, hyaline, cylindrical cells, around which longer or shorter 

 narrower infra-cortical, filamentous cells run longitudinally. They are 

 united with the axial cells in several points in the middle portions by 

 fine protoplasmic connections and give rise by further division to 

 cortical layer, which internally consists of larger, externally, of smaller 

 cells arranged | n short anticlinal rows. The beginning of the cortical 



o o o 



layer is seen in the growing apex of a young ramulus, where the 

 axial cells, the third and fourth from the apical cell, cut off some number 

 of cells on all sides which give rise to cortical cells by further division. 

 Infra-cortical cells elongate later in a longitudinal direction and are 

 transformed into more or less filamentous cells running parallel to the 

 axis. 



As the part grows in age, infra-cortical cells, which a re gradually 

 increased in number, grow up into elongated hyaline cells of wider and 

 narrower calibres, either taking the appearance of cylindrical cells 

 similar to the axial cells, or of rhizoidal filaments, and thus the central 

 axis becomes indistinct being mixed up with them. 



