﻿PLATE XXIII. 



Gracilaria Textorii Suring. 



SPH/EROCOCCACE/E, 、 



Nom, Jap， ： Kaba - novi. 



Gracilaria Textorii Suring. Index prcecurs^ p. ゾ ； De Toni Phyc. 

 Jap. Nov. p. 27, n. 52 ； Id. Syll. Alg. Vol. IV， p. 449 ； Okam. Alg. 

 Jap. Exsic. no. 13. — Splicer ococcns {RJwdynienid) Textorii Suring. Alg. 

 japonicae, p. 36， t. 23 ； J. Ag. Epicr. p. 426 (Nomen in Gracilaria). 



Plants csespitose, rising from a common scutate disc, with a 

 short subcylindricai stem, soon expanding into the cuneate base 

 of frond, 10-20 cm. high. Frond iiat, coriaceous, aicnotomously 

 or subpalmately lobed with broad linear, patent segments whose 

 axils are rounded. Segments, which are 1-3 cm broad, sometimes 

 end in blunt or ligulate, or sometimes in acute or bifid apices ； 

 in other cases, terminal segments are much slenderer than the 

 remaining portion, being divided in repeatedly clichotomous manner. 

 Margin is usually flat and entire, sometimes shp-ntly undulated, 

 and is often provided with proliferous segments which are similar 

 in character to other portion. Frond internally consists of 】arpe 

 and thick-walled cells, elongated between margins and externally 

 covered by a few layers of cortical cells. 



Tetrasporangia are densely scattered over both surfaces of 

 frond. K^ystocarps are hemispherical or almost globular, densely 

 scattered over both surfaces of frond. Pericarp is thick beinp* 

 constructed of many layers of cells and is provided with a 



1) The author has already stated in the preface that literature quoted under each 

 species shall be limited to those which were actually consulted. But hereafter, all the 

 known works relating to every species shall be mentioned, distinguishing those, which he 

 lias no facility to refer, in Italic. 



