POLYPODIACE^:. 



lineari-lanceolatis apicc subulato-acuminatis basi 

 latissimis 4-5 mm. longis basi 1 mm. | mm. latis 

 marginc subintegris vel remote serrulatis. Stipes basi 

 dense squamatus sursum glabratus dorso complanatus 

 in sectione lentiformis 2-4 cm. longus \ mm. latus. 

 Frons linearis 15-30 cm. longa 1J-2 mm. lata apice 

 obtusa basi gradatim attenuata ad stipitem abeuns 

 margine Integra margine tenuiter deorsum recurva 

 ^vN-formis in sectione, in sectione ad marginem 

 acuta, costa supra vix impressa subtus vix elevata. 

 Sori ad medium inter costas et margines siti. Tex- 

 tura tenuiter chartacea. Keceptaculum sororum costa 

 plus approximatim quam margine situm subtus ten- 

 uissime elevatum. 



HAB. Mt. Arisan, Tozan ad 7800 ped. alt., leg. 

 S. SASAKI, Mart. 1913. 



Very distinct for its very narrower fronds with 

 soriferous veins on the nearly midway between the 

 costas and margins. 



Vittaria sp. No. III. (Fig. 149-j, k). Epiphytica 

 ad truncos arboris crescens suberecta plus minus 

 curvato-descendens. Khizoma cum basibus stipitum 

 dense squamatum, squamis persistentibus fusco-nigri- 

 cantibus lineari-lanceolatis 2 mm. longis apice sub- 

 ulato-acuminatis margine remote setulosis, dense fron- 

 digerum. Stipes atro-purpureus basi dense squamatus 

 sursum glaber brevissimus subtetragonus supra sul- 

 catus. Frons longissime linearis 20-50 cm. longa 

 3^-8 mm. lata apice acuminatissima basi gradatim 

 attenuata ad stipitem brevissimum abeuns margine 

 integerrima in exsiccato deorsum recurva utraque 

 pagine glaberrinia, costa supra impressa subtus pro- 

 minente elevata ; textura crassa in exsiccato valde 



Fig. 149 ; a, Vittaria 

 sp. No. I. ; a portion of a 

 scale on the rhizome ; b, V. 

 arisanensis HAY. ; a scale 

 on the rhizome ; c, margine 

 of the same, showing cel- 

 lular structure ; d, Vittaria 

 sp. No. II.; cross section 

 of the frond ; e, marginal 

 portion of the same; f, 

 central portion of the same ; 

 g, V- mediosora HAY. ; h, 

 marginal portion of the 

 same ; i, cross section of 

 the frond ; j, a scale on 

 the rhizome of Vittaria sp. 

 No. III. ; k, cross section 

 of the same species ; 1, a 

 scale on the rhizome of 

 Vittaria. sp. No. IV.; m. 

 cross section of the frond 

 of the same species. 



