244 



POLYPODIACKE. 



Fig. 17O, Polypodiurn arisaneiise HAYATA; 

 on the rhizome ; c, a portion of n pinna. 



b, a scale 



squamatus. Frons cau- 

 dato-ovato - lanceolata 

 pinnatifida 26 cm. longa 

 10 cm. lata apice longe 

 caudata, pinna vel seg- 

 mento terminal! longis- 

 simo lineari 8 cm. longo 

 8 mm. lato apice lineari- 

 acuminato ad summum 

 obtuso basi liaud contracto 

 tenuiter serrulate, serrulis 

 obtusis ascendentibus bre- 

 vissimis approximates 2 

 mm. a se distaiitibus latere 

 inferiore 2 mm. longis 

 costa cum costa parallelis 

 latere superiore ^- mm. 

 longis, areolis costalibus 

 subrectangularibus 3 mm. 

 longis totiusque latis 

 venulas liberas singulasin- 

 cludentibus, venulis liberis 

 soro terminatis; segmentis 

 vel pinnis lateralibus juxta 

 pinnam terminalem bre- 

 vissimis triangulari-oblon- 

 gis circ. 8 mm. longis 5 

 mm. latis apice obtusis 



vel rotundatis a rliacliibus frondium 80 egressis, ssgmentis inferioribus 

 gradatim longioribus, segmentis infra medium longissimis a rliachibus frondium 

 circ. 90 egressis 55 mm. longis 10 mm. latis linearibus apice acuminatis ad 

 summum obtusis basi latissimis dilatatis, sinibus inter segmentorum obtusis 

 apice a costa rhachis frondis 3 mm. distantibns, segmeutis infimis desuper 



