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LXXXIX 



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7 ClaJosiphon crythrartis J. Ag. J 



. 1 : & o* < , Cladosiphon decipiens (Suring.) Okam. 

 >'jaS8*i/^ iPJj S V -> 



if M- 3 : 

 , MS. 4 : ?^ 



Chordaria flagelliformis (Muell.) Ag. 



Norn- Jap. : Naga-matsumo. 



PL XC. 



Frond terete, branching on all sides with branches elongated 

 and flagelliform, simple or sparingly branched. Plant attains 40 cm. or 

 more in length with the diameter of ca. 15 mm. in the thicker portion, 

 gradually tapering upwards. Frond is solid when fully grown, inter- 

 nally consisting of firmly coalescing thick-walled cylindrical cells run- 

 ning longitudinally, which form the medullary tissue and externally of 

 roundish oblong, more or less loosely set cortical cells, from which 

 assimilatory filaments and colorless hairs arise. Assimilatory fila- 

 ments are simple and clavate consisting of 4-5 cells terminated with 

 a little larger cell. Unilocular sporangia oblong or elongated obovate 

 formed at the bases of assimilatory filaments. Colour dark brown in 

 reimmersion, almost black when dried. Substance soft and lubricous 

 in reimmersion, but rigid and brittle when dried. 



Hab. ; Chishima (Kurile Isls.), Kabafuto. 



PL. XC. Fig. 1 : frond of Chordaria flagellifonnis (Muell.) 



