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Descrip, : Fronds numerous rising from an expanded callous 

 disc, 5-15 cm high, cylindrical at base, slightly compressed above, 1-2 

 mm broad, and are fastigiato-dichotomous, dichotomies being more 

 closer above. Segments are linear-cuneate, almost cylindrical, here 

 and there very slightly constricted, patent, ending in blunt apex or 

 bifid. Proliterations arise both from margin and from harmed apex. 

 They are simple, almost horizontal, constricted at base ; at first 

 minute and glandulose, but afterwards elongate and assume the 

 shape similar to other segments of frond. 



Cystocarps are collected in terminal segments, which are often 

 somewhat separated from lower portion by constriction. They form 

 an oblong subnematheciose aggregation on both surfaces, opening 

 afterward by a carpostome ; nucleus lodged in a cavity beneath the 

 cortical layer, simple, globular ; surrounded by the circumnuclear 

 filaments, at the base o( which a placental cell is situated, from which 

 radiates a mass of spores. 



Tetraspores also form an oblong sorus on both surfaces of ultimate 

 segments leaving marginal portion sterile ; they are oblong, cruciate, 

 immersed among the cortical filaments. 



Frond consists of two layers ot cells; the inner, of densely inter- 

 woven longitudinal anastomosing filaments ; in a longitudinal section, 

 filaments are seen to anastomose forming a net-work with elongated 



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meshes, which become gradually shorten outward, the length of 

 meshes almost equalizing their breadth ; the outer, of vertical monili- 

 form dichotomous filaments strongly bound together by mucilage. 



Substance is carnoso-cartilaginous when recent, almost corneous 

 in drying. Color dark purplish-red, fading to yellowish. 



Jfab.: On rocks between tide marks. Provs. Sagami, Suruga, 

 Totomi, Shima, Tosa. Fruits : summer. 



Remarks: Only one species of the genus hithertoknown in this 



