I'OLYPODIACE^E. 



303 



densissime crispata pilosa, pilis fulvo-rubescentibus ; frons fertilis margine 

 deorsum recurva eroso-ciliolata. Sori oblongi ab apice venularuni clavataram 

 deorsum usque ad \\ mm. vel 2 mm. extensi a se mm. distantes. 



HAB. Horisha, leg. B. HAYATA et S. SASAKI, Juni. 1912. 



Compared with a specimen from the Philippines. The above description 

 is drawn from the Formosan collection. 



Peranema DON. 



Peranema formosana HAYATA in Tokyo Bot. Mag. XXVI. p. 110. 

 folyltotrya HUMB. et BONPL. 



Polybotrya duplicato-serrata HAYATA sp. nov. (Fig. 123-A). Ehizoma 

 repens subteres supra densiuscule frondigerum subtus densissime radiciferum. Fr. 

 sterilis : stipes 12-16 cm. longus deorsum dense squamatus, squamis fuscentibus 

 ovato-oblongis vel triangulari-lanceolatis apice acuminatis basi cordatis longe 

 auriculatis circ. 1 mm. longis margine erosis, sursum subglabratus dorso plus 

 minus complanatus intus supra multistriatus 

 fere 3-sulcatus subtus convexus haud striatus 

 Isevis sursum 1^ mm. latus. Frons in ambitu 

 lanceolata 50 cm. louga 11 cm. lata medio latis- 

 sima apice acuminata basi minus lata in am- 

 bitu truncata pinna ta, pinnis mediis longissimis 

 subsessilibus 5J cm. longis 12 mm. latis lineari- 

 bus apice acutis sed ad summum obtusis medio 

 usque ad basin requilatis basi perfecte truncatis 

 ad latus superius plus minus auriculatis vel 

 haud auriculatis subsessilibus vel brevissime 

 petiolatis (petiolis minus quam 1 mm. longis) 

 margine duplicato-serratis, (senis primariis la- 

 tissimis 2i mm. latis 1 mm. longis plus minus 

 ascendentibus subtruncatis margine sen'ulis 3-4 

 instructis, serrulis (serris secundariis) brevissimis 

 ascendentibus ; text lira chartacea utraque pagine 

 subglabra vel plus minus squamis minutis dis- 

 persa, costa supra minus subtus pins elevata, 



Fig. 123-A, Polyboti-ya 

 duplicato-serrata HAYATA ; a, a 

 scale on the rliizome ; b, a por- 

 tion of a pinna of the sterile 

 frond ; c, a portion of a pinna 

 of the fertile frond ; d, another 

 portion ; e, cross section of the 

 same. 



