rOLYPODIACE/E. 



303 



deusissimc crispata pilosa, pilis fnlvo-rubesceutibiis ; frous fertilis margine 

 deorsum reeurva eroso-ciliolata. Sori oblougi ab apice veuularum clavataruui 

 (leorsum usque ad 1 J mm. vel 2 mm. extensi a se § mm. distautes. 



Hab. Horisha, leg. B. Hayata et S. Sasaki, Juni. 1912. 



Couipared with a specimen from the Philippines. The aliove description 

 is drawn from the Formosau collectiou. 



Peyanema Don. 



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

 Pol ijhotrjfa Humb. et Bonpl. 



Polybotrya duplicato-serrata Hayata sp. uov. (Fig. 123-A). Rhizoma 

 repeus subteres sujira densiascule frondigerum suhtus densissime radiciferuui. Fr. 

 sterilis : stijies 12-16 cm. longus deorsum deuse squamatus, squamis fuscentibus 

 ovato-oblougis vel triangidari-lanceolatis apicc acuminatis basi cordatis longe 

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

 miniLS complanatus intus supra multistriatus 

 fere 3-sidcatus subtus convexus haud striatus 

 lajvis sursuui IJmm. latus. Frons in ambitu 

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

 sima apice acuminata basi minus lata in am- 

 bitu truucata piuuata, piunis mediis lougissimis 

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

 biLS apice acutis sed ad summum obtusis medio 

 usque ad basin ajquilatis basi perfecte truucatis 

 ad latus superius plus minus auriculatis vel 

 haud auriculatis subsessilibus vel brevissime 

 petiolatis (jietiolis miniLS quam 1 mm. longis) 

 margine duplicato-seiTatis, (senis primariis la- 

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

 ascendentibus subtruncatis margine serrulis 3-4 

 instructis, serridis (senis secimdariis) brevissimis 

 ascendentibus ; textura chartacea utraque pagine 

 sidiglabra vel plus minus squamis minutis dis- 

 persa, costa supra minus subtas plus elevata, 



Fig. 123-A, Polybotnja 

 duplicato-serrata Hayata ; ;i, a 

 scale on tlie rliizome ; b, a i>or- 

 tion of a pinna of tlie sterile 

 fiond ; c, a portion of a pinna 

 of the fertile frond ; d, another 

 portion ; e, cross sectiou of the 

 sarae. 



