POLyPODIACE.E. 337 



orem suLito sursum recurvis ad paginam superiorem attiugeutibus), versus Lasiu 

 integris basi inaaq^ualibus latere inferiore acuto-cuueatis latere suiieriore plus 

 minus aimculiforme procluctis ad basiu rotuudato-truncatis, petiolis pinnarum 

 inferiorum 1-2 mm. longis, petiolulis piunularum inferiorum 1 mm. longis. Kha- 

 chis frondis dense piloso-squamata medio 1 mm. lata supra profuudc canalicu- 

 lata ; rhachis pinnarum subtus laxe piloso-squamata supra glabra doi-so com- 

 planata miniLs quam 1 mm. lata subalata supra tenuiter sulcata, costa pinnula- 

 rum vel segmentorum supra haud imiiressa haud elevata, subtus teuuiter 

 elevata ; venis primariis simplicibus vel supra basiu fm-cato-2-ramosis, ramis 

 parallelis simplicibus ad margiuem attingentibus ; textura coriacea, pagina 

 supra in vivo atroviridis subtus pallidior subglabra vel subtiLS prope basin 

 minute squamata ; rhachis pinnarum inferiorum a rhachibus frondis angulo 

 70° egressa, pinuis infimis phas minus reflexis augulo 140° egressis, pinnis sub- 

 rectis vel plus minus recurvis ; costa piuuularum a rhachibus i^iunarum anguhi 

 circ. 60° egressa, pinuulis a se approximatis interdum leviter imbricatis, pagiua 

 frondis supra glabra subtus ad costas venas veuulasque minute squamata, 

 squamis ad venulas ultimas linearibus vermiformibus Imm. lougis. Indusium 

 rotundatum peltatum rarius cordatum margino erosum. Spora nigra. 



Hab. Mt. Arisan: Hasegawakei, leg. Takeo Ito et B. Hayata, Aprili. 1914. 



Somewhat resembles Polystlchum amahile Sji. iu having sori locating near 

 the margin, but differs from it in having uudivided lowest pinnaa and in the 

 superior pinna^ which are gradually passing to tlie lobes of the apical portiou 

 of the fronds. Eemarkable for the sori wliich are located only toward the 

 apex of the pinna3 and pinnules. 



Polystichum obtuso-auriculatum Hayata sp. nov. (Fig. 144 et 1.37- 

 e, f ) Rhizoma erecto-ascendens apice cfespitosum frondigerum. Stijies 10-16cm. 

 longus basi dense squamativs sursum glabratus medio § mm. hxtus pallido- 

 stramineus vel castaneus basi triqueter supra plauus subtus convexus sursum 

 latere supra profuude sulcatus compressus sursum sjjarse miuute squamatus. 

 Frons lanceolata 22-33 cm. longa stipitem duplo superans 4-5 cm. lata apice 

 acuminata basi truncata partibus superioribus excejitis a;c[uilata apice acumi- 

 natissima pinnata, sed in acumine pinnatitida pinnatiloba vel dentata, partibus 

 pinnatifidis minus quam 3 cm. longis minus quam 1 cm. latis versus apicem 



