rOLYPODIACE<. 



243 



Compared with a specimen from the Philippines. 

 Vittaria SM. 



Vittaria arisanensis HAYATA sp. nov. (Fig. 169). 

 Epiphytica. Rhizoma tenue dense squamatum, squamis 

 tenuibus linearibus 10 mm. longis mm. latis 

 apice acuminatis. Stipes subntillus. Frons 

 linearis 50-60 cm. louga 8-9 mm. lata apice 

 acuminata attenuata ad stipetera subnullum 

 abeuns integra utraque glabra non squamata 

 chartacea, costis supra non visis subtus fere 

 distinctis sed non elevatis, margine subplana 

 leviter recurvata vel non recurvata ; venis 

 lateralibns liberis laxissime dispositi. Sori 

 a margine l-l-J- mm. distantes. 



HAB. Mt. Arisan, leg. B. HAYATA et 

 S. SASAKI, 1912, Jan. Differs from V. lineata 

 by the much larger fronds and by the sori 

 which are not wrapped by the margin. 



Vittaria sp. 



A very slender fern resembling V. 



Fig. 169, Vittaria arisanensvi 



lineota (LOWE Ex. Fer. Vol. II. t. 65-A ; HAYATA ; a, the plant ; b, a portion 



EAT. Fern. North Americ. t. 38). No frac- o * taaA (^eraide); , a por- 



tion of cross section of the frond, 

 tification. 



Polypodium LINN. 



Poly podium arisanense HAYATA sp. nov. (Fig. 170). Epiphytica. 

 Rhizoma repens complauato-teres 4 mm. in diametro sectionis ad insertionem 

 stipitnm valde elevatum (partibus elevatis 2 mm. longis) squamis dense obtec- 

 tum, squamis cuspidato-triangularibus apice lineari-cuspidatis basi subtus latis- 

 simis !- mm. latis 3 mm. longis basi alte cordatis vel auriculato-cordatis, (au- 

 riculis cordum - mm. longis subimbricatis basi 2-lobatis, lobis triangularibus 

 margine remote denticulatis), supra insertionem pilis longiusculis 1 mm. longis 

 5-6 instructis castaneis. Stipes iutus sulcatus stramineus extus rotundatus 

 castaneus semiteres 2 mm. in diametro 10 cm. longus gracillimus glaber haud 



