rOLYPODIACE.E. 271 



ad lobos acuminis abeuntibus, pinnis infimis elongato-triangulari-oblongis cum 

 petiolulis 60 cm. longis 25 cm. latis a mcdio deorsum. requilatis apice gradatim 

 acuminatis ad summuin acuminatis pinuatis, pinnulis inferioribus lineari-lan- 

 ceolatis 14cm. longis 4cm. latis a medio deorsum requilatis apice caudato- 

 acuminatis basi perfecte truncatis latere inferiore latioribus quam. latere superiore 

 brevissime petiolulatis (petiolulis 3 mm. longis) deorsum piunatifidis medio pin- 

 natilobis sursum gradatim denticulatis, segmentis iuferioribus lineari-quadran- 

 gularibus 22 mm. longis 10 mm. latis apice rotundatis vel truncatis margine 

 remote et tenuissime serrulatis vel subintegris 2 mm. a se remotis vel totius- 

 que latis, sinibus inter lobos vel segmentos acuminatis angustissimis medio 1- 

 1^ mm. latis; pinnis suboppositis a rhachide frondis angulo 45" egressis, pinnulis 

 a rhachide pinnarurn augulo 80 egressis, segmentis vel lobis pinuularum a 

 rhachide pinnularum angulo 80 vel 90' egressis ; pinnis inferioribus petiolatis 

 (petiolis 5-3 cm. longis), a se 20 cm. remotis, pin- 

 nulis inferioribus pinnarurn inferiorum a se 3- 

 5 cm. remotis ; pagiua herbacea membranacea supra 

 glabra subtus ad costas et venas squamis minutis 

 et pilis minutis sparsissime dispersa ; costa supra 

 complanato-elevata utroque latere minute pilosa 

 interrupte alata, alis erectis ^ mm. latis ; venis 



venulis supra tenuiter elevatis, venis venulis supra Fl 9- - 1 ^' I)l P^ KI ' um *- 



fiaii&orum HAYAT.V; a, a scale 

 basi furcato-ramosis, ramis veuularuni subrectis on t ] ie f ron d; b, a portion of 



parallelis ad apicem margineni attingentibus apice a P mna - 

 elevatis ; costis venis venulis subtus temuter elevatis, venulis totis liberis hand 

 anastoniosantibus. Frons ad totam paginam sorifera. Sori prope vel versus 

 costas costulas et venulas utroque latere 1-seriatirn siti ab apice ab margineque 

 loborum 3-5 mm. distantes oblongo-liueares 3-4 mm. longi ^ mm. lati. In- 

 dusium inflatum lineari-oblongum sacciforme complete soros involvens. 

 HAR. Mt. Arisan : inter Funkiko et Taroyen. 



Very near D. costal isorum HAYATA, but distinguisliable from it in having 

 nearly entire segments or lobes, which have sori locating in a single scries on 

 each side of the costules. In D. costalisorum, the soriferous lobes arc usually 

 dentate or lobulate. 



