POLYPODIACE.E. 337 



orem subito sursum recurvis ad paginam superiorem attingentibus), versus basin 

 integris basi incequalibus latere inferiore acuto-cuneatis latere superiore plus 

 minus auriculifornie productis ad basin rotundato-truncatis, petiolis pinnarum 

 inferiorum 1-2 mm. longis, petiolulis pinnularuni inferiorum 1 mm. longis. Rha- 

 cliis frondis dense piloso-squamata medio 1 mm. lata supra profunde canalicu- 

 lata ; rhacliis pinnarum subtus laxe piloso-squamata supra glabra dorso com- 

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

 runi vel segmentoram supra baud impressa baud elevata, subtus tenuiter 

 elevata ; venis primariis simplicibus vel supra basin furcato-2-ramosis, raniis 

 parallelis simplicibus ad- marginem attingentibus ; textura coriacea, pagina 

 supra in vivo atroviridis subtus pallidior subglabra vel subtus prope basin 

 minute squaniata ; rhacliis pinnarum inferiorum a rhacliibus frondis angulo 

 70 egressa, pinnis infimis plus minus reflexis angulo 140" egressis, pinnis sub- 

 rectis vel plus minus recurvis ; costa pinnularuni a rhachibus pinnarum angulo 

 circ. 60" egressa, pinnulis a se approximatis interdum leviter imbricatis, pagina 

 frondis supra glabra subtus ad costas venas venulasque minute squaniata, 

 squamis ad venulas ultimas linearibus vermiformibus 1mm. longis. Indusium 

 rotundatum peltatum rarius cordatum margine erosum. Spora nigra. 



HAB. Mt. Arisan: Hasegawakei, leg. TAKEO ITO et B. HAYATA, Aprili. 1914. 



Somewhat resembles Polystichum amdbile SM. in having sori locating near 

 the margin, but differs from it in having undivided lowest pinnaj and in the 

 superior pinnse which are gradually passing to the lobes of the apical portion 

 of the fronds. Remarkable for the sori which are located only toward the 

 apex of the pinnse and pinnules. 



Polystichum obtuso-auriculatum HAYATA sp. nov. (Fig. 144 et 137- 

 e, f ) Rhizoma erecto-ascendens apice casspitosum frondigerum. Stipes 10-16 cm. 

 longus basi dense squamatus sursuni glabratus medio mm. latus pallido- 

 stramineus vel castaneus basi triqueter supra planus subtus convexus sursuni 

 latere supra profunde sulcatus compressus sursum sparse minute squamatus. 

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

 acuminata basi truncata partibus superioribus exceptis eequilata apice acumi- 

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

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



