346 POLTPODIACE^. 



Frons fertilLs : quam ea sterilis minor conformis vel angustior j^iunis longissime 

 linearibiis chartaceis ; segmenta pinnarum vel frondimi mai'giue toto longitudine 

 sorifera. Indusium marginale tenuissime memlDranaceum Imm. latum. 



Hab. ]Mt. Arisan, Taroyen, leg. Takeo Ito, Aprili. 1914. 

 Vittavia Sm. 



Vittaria sp. Xo. I. (Fig. 149-a). Epiphytica ad truucos arboris crescens. 

 Kliizoma dense squamatum dense frondigenun, sc^uamis castaneo-fuscentibiLS 

 4-6 mm. longis basi J mm. latis linearibus basi latissimis \ mm. latis apice 

 subulato-acuminatis margiue remote setulosis. Stipes supra subnullus subtus 

 complanatus basi sq[uamatus. Frons longissime linearis usque ad 30 cm. longa 

 usque ad 3mm. lata apice acuminatissima basi gi"adatim attenuata glabra mar- 

 gine integi"a margine liaud vel vix recm^va glabra. Textmu cbartaceo-coriacea, 

 costa supra vix vel distincte elevata siibtus plana haud elevata vel plus minus 

 impressa. Sori ad sulcos margiuales siti. 



Hab. Shiuko : Mai, leg. U. Mori, Juli. 1906 (Xo. 1322). 



Very near V. elongata Sw.; but diffei-s from it liy the much smaller fi'ouds 

 with elevated costii?. Color and cellular structure of the scales are also different. 



Vittaria arisanens Hayata (Fig. 149-b, c) Ic. Pl. Foi-mos. IV. p. 243, 

 fig. 169. Descriptio auctata : Squamaj apicLs rhizomatis lineari-lanceolata? 5- 

 8 mm. lougju |-1 mm. lata? apice acuminatissimae basi haud contracta? haiid 

 nigiicautes tenixLssim;x3 fusco-castaue^. 



Vittaria sp. Xo. II. (Fig. 149-d, e, f). Epiphytica ad truncos arlxirLs 

 crescens. Ehizoma dense squamatum et dense frondigenim, sc[uamis fuscentibiis 

 lineari-lanceolatLs cum iis Vittarice sid>erectce couformibus paullo majoribus. 

 Stipes basi dense squamato excepto glaber brevis subtetragonus. Frons louge 

 liuearis 3ocm. longa Gmm. hita aiiice acumiuatissima basi gradatim atteuuata 

 ad stipitem brevem abeuus glabra. Textura teuuiter coriacca. Sori iutramar- 

 ginales, marginibus valde deoi-siuu curvatLs. 



Hab. ititer Urai ct Puiga, leg. K. iliYAKE, Oct. 1899. 



Xear Vittaria suberecta Hayata, biit distiuguishable from it by the thiuner 

 fronds with much more recurved margins. 



Vittaria mediosora Hay.\ta sp. nov. (Fig. 149-g, h, i). Ejiiiiliytica. Pvhi- 

 zoma deusc squamatum dense froudigerum ; squamis caducissimis fusoeiitibus 



N 



