242 



POLYPODIACEJE. 



latis latere inferiore pinnulis 3-4 gerentibus latere superiore hand pinnuliferis 

 subsessilibus vel breve petiolatis, pinnulis infimis a rhachibus pinnarum 

 angulo 70-90 divaricatis sessilibus late linearibus 13 cm. longis 2 cm. latis 

 basi truncatis ad apicern subito acutis ad acumina 

 abeuntibus (acuminibus linearibus 2 cm. longis 3 mm. 

 latis margine crenulatis ad summum acutis) ad rhachin 

 pinnatifidis, segmentis altemis linearibus a rhachibus 

 pinnularum angulo 80 divaricatis 15 mm. longis 3^ mm. 

 latis apice rotundato-obtusis basi plus minus dilatatis 5 

 mm. latis ad basin se continuis 

 approximatis margine integris 

 fn> nervo-marginatis. Textura char- 

 tacea supra glabra, costulisutraque 

 pagine elevatis venis venulisque 

 liberis a basi vel a medio furcatis, 

 venulis ad marginem attingenti- 

 bus supra subglabris subtus 

 parcissime minuteque sub lente 

 glanduloso-pilosis; costulis pinna- 

 rum utraque elevatis supra pro- 

 funde sulcatis, utroque latere 

 sulcorum anguste lamellatis, 

 lamellts remote minute setulosis, setulis acutis complanatis, segmentis margine 

 toto latere (excepto basi apiceque) soriferis. 



HAB. Mt. Morrison, ad 6000 ped. alt., leg. U. MORI, 1909, (No. 1867); 

 Mt. Arisan, leg. B. HAYATA et S. SASAKI, Jan., 1912. 



Near Pteris biaurita LIKN. (HOOKER et GREV. Ic. Fil. t. 142), but differs 

 from it by the lowest pinnae, which are not biparted, but have 2-3-pinnules 

 on the lower side. This is still nearer Pteris quadriaurita var. setigera 

 (HooK.) (BEDD. Fern. Brit. Ind. t. 202), which has setulose rhachis like that 

 of the present fern. 



Pteris tripartite Sw. 



HAB. Taito: Nanrio, leg. G. NAKAHARA, Jan., 1906, .No. 703). 



Fig. 168, Pteris sttulotso-costulata HAYATA ; 

 a, the plant ; b, a portion of n pinnule ; c, setules 

 on the costa. 



