POLYPODIACJ'LK. 



305 



densissime crispata pilosa, pilis ful vo-rubescentibus ; frons fertilis margino 

 deorsuni reeurva eroso-ciliolata. Sori oblongi ab apicc venularum clavatarum 

 clcorsum usque ad 1^ mm. vcl 2 mm. cxtcusi a so mm. tlistantes. 



HAP,. 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. 



Poly'botrya HUMB. et BONPL. 



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

 repens subteres supra deusiusculc frondigerum subtus densissime radiciferum. Fr, 

 sterilis : stipes 12-1G cm. longns deorsum dense squarnatus, squauiis fuscentibus 

 ovato-oblongis vel triaiigulari-lanceolatis apice acuniinatis 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 

 lasvis sursum 1| mm. latus. Frons in ambitu 

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

 sima apice acuminata basi minus lata in ani- 

 bitu truncata pinnata, pinnis mediis lougissimis 

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

 bus apice acutis sed ad sunimum obtusis medio 

 usque ad l)asin tequilatis basi perfecte truncatis 

 ad latus superius plus minus auricidatis vel 

 haud auriculatis subsessilibus vel brevissinie 

 petiolatis (petiolis minus quam 1 mm. longis) 

 margine duplicato-serratis, (serris primariis la- 

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

 ascendentibus subtruncatis margine serrulis 3-4 

 instructis, serrulis (serris secundariis) brevissiniis 

 asceiidentibus ; textura chartacea utraque pagine 

 subglabra vel plus minus squamis minutis dis- 

 persa, costa supra minus subtus plus elevata, 



Fig. 123- A, Polybolnja 

 (htplicato-se.rrata HAYATA ; a, a 

 scale on the rldzome ; 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. 



