Observations on the Flora of Japan, 



{Continued from p. 294.) 



By 



T. M a k i n o. 



Lechwer of Botany in the Science College, 

 Tmperial University of Tokyo. 



Marattia teriiatea de Vriese, Monogr. Marat. (1853), p. 

 4 ; Christensen, Iiid. Fil. (1906), p. 415 ; Copeland in Philip. 

 Journ. Sc. IV. (1909), p. 11, tab. 7. 



Pinnge oblong, about 4 decim. long and nearly 2A^ decim. 

 broad in mj' specimen ; rachis slender, terete, very narrowly 

 winged above, very thinly scaly (scales linear, fulvous, fuga- 

 cious), incrassated at the base. Pinnules numerous, rather 

 closely arranged, alternate, but nearly opposite below, patent 

 or erect-patent, very shortly petiolulate, narrowly lanceolate, 

 acuminate, obliquely rounded at the base, subrevolute and 

 crenulate on subcartilaginous thick margin, but conspicuously 

 and more sharply serrate towards the top, attaining about 14 

 cm. long. If cm. broad, coriaceous, green and glabrous above, 

 paler and covered with very minute pale prominent powdery 

 dots and moreover thinly dispersed with ferruginous irregularly 

 laciniate thin scales which are larger and denser on the midrib ; 

 midrib slender, prominent on both surfaces but more so beneath ; 

 veins subhorizontally patent, conspicuous, simple or sometimes 

 bifurcate at base, with broad-linear area between the veins. 

 Sori (Synangia) in single row on each side on pinnules, com- 

 paratively large, numerous, closelj^ placed each other, distant 

 from the margin, glabrous, isabel-coloured, very prominent 

 with the vertical sides, straight, narrowly oblong, boat-shaped, 

 2-3Jmm. long, furnished with an glanduloso-fimbriate inferior 

 ferruginous obscure involucre ; sporangia in about 7—14 pairs ; 

 receptacle linear. 



