22 



in upper portion, with broadly linear or cuneate patent or somewhat 

 erect segments ; margin entire in sterile frond, usually curled and 

 fringed with very minute processes, and with very rarely proliferous 

 lacineee. Cystocarps scattered on both surfaces, in some mostly marginal, 

 in others scattered over the disc, furnished with two low prominences. 

 Tetraspores equally scattered over the surface of frond which is either 

 entire or fimbriated. 



Hob. On rocks in snblitoral region. 



Log. Sagami, Boshu, Kadsusa, Iwaki, and Shima. None is known 

 to grow in the Japan sea 



Description. Plants rising from a callous disc, solitary or few 

 tufted, shortly stipitate, 10-20 cm high or more. Stipe compressed, almost 

 cylindrical, afterward either simple or divided, giving rise to many 

 main divisions, and soon expanding into narrower or broader cuneate 

 base of frond. Frond divided in di-polychotomous often palmato- 

 flabellate manner, and again decompounded in a similar way ; so that 

 the outline of frond, when placed in expansion, forms, a large segment of 

 a circle. Segments broadly linear or linear cuneate, more or less expand- 

 ing beneath forks, 2-3 cm broad in broader, 0.5-10 mm in narrower 

 portions ; they are erect or more patent with narrower or wider, more or 

 less rounded axils respectively; toward apices they remain either simple 

 and ligulate, or divided into lacineae, all ending in a rounded apex, 

 being narrower than the lower portion. Margins are entire and perfectly 

 naked in younger and sterile forms, minutely curled or crenulated in 

 fructified frond, appearing as if fimbriated with very minute processes, 

 or again, in very rare cases, furnished with a few proliferous lacineae. 

 Cystocarps are hemispherical tubercles, prominent on one surface, being 

 situated on both surfaces of frond, crowned with mostly 2 short 

 bluntish prominences. They are formed in some forms, exclusively in 

 intramarginal portions, some being situated in marginal processes, in 

 others they are scattered over the surface of frond. Tetraspores densely 

 scattered all over the frond which is either entire or curled at margin. 

 Color blood-red or rosy, fading to greenish. Substance membranous, 

 becoming thickish in older specimens. 



Remark. Callophyllis laciniata (JIuds) Eg. is no doubt a very 

 close ally to the present plant, and some specimens of the latter have 

 a habit very similar to the former ; but I cannot identify the latter 



