POLYPODIACEJE. 161 



mm. broad V. anguste-elongata 



3. Fronds not tortuous V. elangata 



Fronds usually tortuous V. tortifrons 



4. Fronds very narrow, usually 30 cm. long 2 mm. broad ; sorus on the 



middle between margin and costa V. mediosora 



Fronds 4-8 mm. broad 4080 cm. long, sori located near the margin . . 5 



5. Fronds pendulous, scales brownish V. arisanensis 



Fronds suberect, scales much darker V. suberecta 



Vittaria anguste-elongata HAYATA sp. nov.= Vittaria sp. HAYATA Ic. 

 PI. Formos. V. p. 346, fig. 149-a. Epiphytica ad truncos arboris crescens. 

 Rhizoma dense squamatuin dense frondigerum, squamis castaneo-fuscentibus 46 

 mm. longis basi | mm. latis linearibus basi latissimis mm. latis apice subulato- 

 acuminatis margine remote setulosis. Stipes supra subnullus subtus complanatus 

 basi squamatus. Frons longissime linearis usque ad 30 cm. longa usque ad 

 3 mm. lata apice acuminatissima basi gradatim attenuata glabra margine Integra 

 margine haud vel vix recurva glabra. Textura chartaceo-coriacea, costa supra 

 vix vel distincte elevata subtus plana haud elevata vel plus minus impressa. 

 Sori ad sulcos marginales siti. 



HAB. Urai, Suisha, Kelung, Giran, Soseikyaku. 



Near V. elongata Sw. ; but separable from it in the much smaller fronds 

 which are usually more or less tortuous, and in the scales which are brownish 

 and less dark than those of V. elongata. 



Vittaria elongata Sw. ; MATSUM. et HAYATA Enum. PI. Formos. p. 

 625. 



HAB. Kaukaukei, Botansha, Suiteiryo, Urai, Randaisan. 



Vittaria suberecta HAYATA sp. nov. Vittaria sp. No. III. Ic. PL 

 Formos. V. p. 347 fig. 149 j-k. Epiphytica ad truncos arboris crescens 

 suberecta plus minus curvato-desceiidens. Rhizoma cum basibus stipitum dense 

 squamatum, squamis persistentibus fusco-nigricantibus h'neari-lanceolatis 2 mm. 

 longis apice subulato-acuminatis margine remote setulosis, dense frondigerum. 

 Stipes atro-purpureus basi dense squamatus sursum glaber brevissimus sub- 

 tetragonus supra sulcatus. Frons longissime linearis 20-50 cm. longa 3^-8 mm. 

 lata apice acuminatissima basi gradatim attenuata ad stipitem brevissinium 



