212 



POLYPODIACE^E. 



/ 



J 



latissimis 3 mm. latis f mm. longis apice truncatis ; venis subfurcatis ; textura 

 membranacea. Sori in lobulis singulis solitarii latissimi marginales. 

 HAB. Kusukusu, Jun. 1912, leg. B. HAYATA et S. SASAKI. 

 Near L. cuitrata Sw., but differs from it by the much narrower and 

 longer fronds with smaller and broader pinnae ; also 

 allied to Lindsaya linearis Sw. (in KUNZE Farn- 

 krauter I. t. 16-1) and Lindsaya gracilis=Ijindsaya 

 securifdia PEESL. (KuNZE Farnkrauter I., t. 85-1), in 

 the linear lanceolate simple pinnate fronds. Perhaps a 

 form of L. cuitrata. Sw. 



JMplazium Sw. 



Diplazium arisanense HAYATA sp. nov. (Fig. 

 144). Rhizoma ascendens erectum. Stipes tenuis 30cm. 

 longus teres 2 mm. latus basi squamatus sursum glabra- 

 tus, squamis castaneis linearibus lanceolatis usque 8 

 inm. longis usque 1^ mm. latis. Frons 40 cm. longa 16 

 cm. lata ovato-lanceolata apice acuminata basi in ambitu 

 rotundata bipinnata vel bipinnatifida, pinnis infimis 

 minus longis, niediis longissimis lanceolatis 13 cm. longis 

 3 cm. latis apice acuminatissimis basi latissimis trun- 

 catis pinnatis 

 vel pinnatifi- 

 dis subsessili- 

 bus vel inferi- 

 oribus brevis- 

 sime petiola- 

 tis, pinnulis 

 infimis longis- 



Fig. 144, Diplazium arisanense HAYATA; a, the plant; b, a por- S1 H11S ovato- 

 tion of a pinna ; c, a sorus of the Athyrium-iype ; d, another sorus of the oblonffis2icm. 



Z>ipZazmm-type. 



longis 13 mm. 



latis apice in ambitu obtusis basi late cuneatis ad insertionem 3 mm. latis 

 sessilibus paullo msequilateralibus margine leviter lobulatis, lobuUs pauce 



