306 POLYPODIACE.E. 



venis venulis utraque pagine tenuiter elevatis, venis lateralibus primariis mediis 

 a se 21 mm. rernotis a costa angulo 45 egressis ad basin venulis singulis utro- 

 que latere emittentibus ad medium 1-plo vel 2-plo furcatim ramosis, venulis 

 totis liberis subrectis vel deorsum vel sursum recurvis ad apicem serrarum 

 secundariarum attingentibus ; pagiiia supra in exsiccato fusco-viridescens subtus 

 pallidior ; pinnis inferioribus gradatim minoribus in pinna innrna usque ad 



4 cm. reductis, superioribus gradatim minoribus ad pinnas superrimas usque ad 



5 mm. longas reductis, pinnis inferioribus suboppositis meclio superioribus alter- 

 nis; pinnis inferioribus a se utroque latere 3cm. rernotis, superioribus gradatim 

 approximatis ; pinnis a rliachide frondis angulo circ. 90'-80 egressis subrectis 

 sed plus minus basi deorsum apice sursum recurvis. Frons ad apicem interdum 

 prolifera ibique radicans ; rhachis frondis minute remoteque squarnata supra 

 dorso complauata canaliculata per medium canaliculorum tenuissinie 1 -costa ta, 

 costis tenuissimis. Fr. fertilis: Stipes quam is frondis sterilis longior 30-35 cm. 

 longus. Frons in ambitu linearis 20-25 cm. longa 3-31 cm. lata apice grada- 

 tim attenuata obtusa basi abrupte truncata, pinnis rnedio deorsum requilongis 

 breve petiolatis (petiolis 1-2 mm. longis) linearibus 13mrn. longis 3|-4rnm. latis 

 apice rotundato-obtusis ab apice usque ad basin aaquilatis basi subcordatis 

 pagine coriaceis supra glabris in exsiccato fulvo-rubescentibus subtus totis sori- 

 feris margine serrulatis deorsum recurvis, costa supra minus subtus plus elevata ; 

 pinnis rnedio superioribus gradatim minoribus versus apicem ad pinnam ob- 

 longo-rotundatam 5 mm. longarn reductis. 



HAD : Akocho : Tanashu, leg. G. NAKAHARA, Jan. 1905. 



Near P. appendiculata J. SM., but separable from it by the much thinner 

 fertile pinnre, and duplicately serrate sterile pinnas with very short bristles at the 

 sinus. 



Polybotrya marginata BLUME Fl. Jav. Fil. p. 18, t. 3. Khizoma repens 

 dense frondigerum. Fr. sterilis : stipes 10-20 cm. longus sparse squamatus, 

 squamis lanceolatis acuminatis 2 mm. longis ; frons lineari-lanceolata stipitem 

 |-plo in longitudine requans 15-25 cm. longa 3-5 cm. lata apice acuniinato- 

 pro-longata, (acumine linear! 3i cm. longo 3-5 mm. lato recto margine dentato 

 interdum basi prolifero) pinnata, pinnis (infirnis superioribus exceptis) omnibus 

 requilongis, mediis 3cm. longis G mm. latis linearibus margine parallelis apice 



