rOLYPODIACE^E. 



185 



pluricellularibus. Sori 

 seriatim dispositi. 



HAB. Kotosho, 

 leg, T. KAWAKAMI et 

 S. SASAKI,' Juli., 1912. 



Dryopteris(^V 

 dryopteris) thricho- 

 rhachis HAYATA sp. 

 nov. (Fig. 123). Rhi- 

 zoma ? Stipes 70cm. 

 longus basi dense sur- 

 sum parce squamatus 

 castaneo-r ubescens, 

 squamis inferiori- 

 bus latioribus lanceo- 

 latis 1-2 cm. longis 

 2-4 mrn. latis apice 

 s u b u 1 a to-acuminatis 

 ca s t a n e o-nigricanti- 

 bus validiusculis 

 patentibus, squamis 

 superioribus angusti- 

 oribus linearibus vel 

 setiformibus patentis- 

 simis; rhachis 

 straminea squamis 

 setiformibus ubique 

 dispersa, squamis 

 persistentibus paten- 

 tissimis. Fronsovato- 

 triangularis 66 cm. 

 longa 50-55 cm. lata 

 apice tenuissime 



utroqae latere costnlge loborum prope iharginem 1- 



1 



>c<- 



v , 



<MSi''^ 



. V 



i Wf 



Pig. 123, Dryopteris tlirichorhachis HAYATA ; a, the type 

 specimen ; b, a younger specimen : c, a, scale on the stipe ; 

 rt, a hair on the upper side of a costa of a pinnule; e, a hair 

 on the under side of a costa of the same pinnule; f, an upper 

 pinnule from the younger specimen, seen from below ; g, the 

 same, seen from above ; h, a second pinnule of the middle pinna; 

 i, n sorus. . ; 



