rOLYPODIACE^E. 337 



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

 integris basi inasqualibua latere inferiore acuto-cuneatis latere superiore plus 

 minus auriculiforme procluctis ad basin rotundato-truncatis, petiolis pinnarum 

 inferiorum 1-2 mm. longis, petiolulis pinnularum inferiprum 1mm. longis. Rha- 

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

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

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

 rum vel segmentorum supra hand impressa baud elevata, subtus tenuiter 

 elevata ; venis prirnariis simplicibus vel supra basin furcato 2-ramos.is, ramis 

 parallelis simplicibus ad marginem attingentibus ; textura coriacea, pagina 

 supra in vivo atroviridia subtus pallidior subglabra vel subtus prope basin 

 minute squamata ; rhachis pinnarum inferiorum a rhachibus frondis angulo 

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

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

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

 frondis supra glabra subtus ad costas venas venulasque minute squamata, 

 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 PolysticJmm amabile SM. in having sori locating near 

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

 superior pinnae 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 pinna? and pinnules. 



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

 e, f ) Rhizoma erecto-ascendens apice csespitosum frondigerum. Stipes 10-1 6 cm. 

 longus basi dense squarnatus sursum glabratus niedio mm. latus pallido- 

 stramineus vel castaneus basi triqueter supra planus subtus convexus sursum 

 latere supra profunde sulcatus compressus sursum sparse minute squamatus. 

 Frons lanceolata 22-33 cm. longa stipitem duplo superaus 45 cm. lata apice 

 acuminata basi truncata partibus superioribus exceptis asquilata apice acurni- 

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

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



