152 



, -V- 7 : m ' pit n & ft M * sa ? * >" IB ' $ * us , 



- 8 : HI Jt ' m SB - " 7 ^ ' &*&?*;" *' ,- 8 |fi.-9 : K 

 * 9 iW U 3 j M ^ A' * ^ , 3 p.-lO : fe HI H ^ ^1 if ; '. 

 * Jfo. V- 



Symphyocladia marchantioides (Harv.) Fkbg. 



Nom, Jap- : Kozane-mo. 

 PL XCIII. 



Symphyocladia marchantioides (Harv.) Falkenb. Rhodomelaceen 

 1901, p. 277, t. 2, f. 18-23; t. 4, f. 20-24 ; De Toni Syll. Alg. IV, p. 

 989 ; Okam. Alg. Jap. Exsic. Fasc. II, No. 72 ; |Sj M R ^ ^ ffi ^ ^ 

 p. 64. Placophora marchantioides J. Ag. Till Alg. Syst. VII, p. 

 in. Placophora latiuscula Okam. in De Toni Sopra tre nuove 

 Alghe Giapp. 1895, p. 340 ; Id. Phyc. Jap. Nov. p. 33, Tab. I, f. 1-16' 



Frond thin and flat, more or less broadly membranaceous, taper- 

 niT at the base into the decumbent stem-like portion which adheres 

 to the substratum by emitting roots from the under-surface. It is 

 erect for the most part, but has a tendency to put out roots from any 

 place where it comes in contact with the substratum. When young 

 it is repent, oblong or obovate, leaf-like and slightly crenulated at 

 margins ; but when old, more usually it becomes more or less ir- 

 regularly lobed or branched in pinnate manner with roundish-cuneate 

 or tooth-like marginal lobes. Branches are set irregularly, often 

 expanding here and there into broader segments, with the breadth of 



x O O 



1.5-8 mm. and the plant attains the height of some S-io cm. In the 

 fully grown frond the most parts appear as if midribed by the gradual 

 cortication from the basal portion upwards. In younger lobes cells 



