6 7 



terminal portion and more usually from harmed ends. Lateral proli- 

 ferations usually remain short and roundish in fructified frond, but 

 often elongate into more or less loner branches which are more fre- 



O o 



quently the case in those issuing from the terminal portion. 



"Fruits of both kinds collected in marginal proliferations in a 



/ LI / 

 nematheciose manner. Cystocarps are collected benea,th the flatfish 



surface of marginal roundish proliferated sporophylls ; they are also 

 found forming a roundish nemathecium beneath the apex of marginal 

 and terminal elongated proliferations and sometimes in the similar 

 position of terminal non-proliferous segments. Tetraspores are ag- 

 gregated forming an intramarginal sorus in lateral roundish prolifera- 

 tions, whose margin remain sterile and is elevated into a thick rim. 



" The structure of the frond is very dense ; the medullary layer 

 consists of densely aggregated shortish filamentous cells firmly united 

 to each other by hyaline intercellular substance ; the intermediate 

 cells are of roundish angular cells which become gradually smaller 

 above-, forming a cortical layer. In the sporophyll bearing tetraspores 

 the structure is little different ; there is no evident intermediate cells 

 and medullary layer is more loose, from which moniliform filaments 

 arise, among which oblong tetraspores are lodged. 



"Color is deep blood-red, becoming darker in drying. Substance 

 is strongly cartilaginous becoming very stiff when dried." Okam. /. c. 



Hab. : On rocks near low tide. Provs. Hiuga, Shima, Ise, 

 Totomi, Idzu, Sagami and Boshyu ; Oshima (Idzu). 

 Fruits : summer. 



Remarks : De Toni puts the present species under Polyopes in 

 his /. c, on the ground that Schmitz has referred Harvey's original 

 species, Gymnogongrus lignlatns, to that genus. I think, however, 

 it is proper to put it under the present genus from its often having 



