204 



polypodiackt:. 



eellulai-ibus instructis ; pagina supra f usco-Tii-idis subtus pallidior. Sori medio 

 inter costam et marginem utroque latere costse pinna? vel costulse auriculsa 

 pinnse 1-seriatim dispositi rotundati. Indusiiua rotundatum ad basin 

 adnatum margine eroso-denticulatum 1| mm. latiim latius quam longius. 



Hab. Ai-isan, ad 8000-7000 ped. alt., leg. B. Hayata et S. Sasaki, 

 Jan. 1912. 



General aspect of this new species is jiLst tlie same as tliat of Dryopteris. 

 But the relationsliip of tliis fem and Aiilirc/pterls ramosa is verj close in tlie 

 venation, sori and especially iu tlie glandular liairs on tlie rLachis. Our fern 

 difFei-s from that genus only in having imarticulated fronds. So far as I am 

 aware, tliis is the most tiny form of all the known species of Nephrolepis. 

 Davallia Sm. 

 Davallia Stenolepis Hayata sp. nov. (Fig. 138). Bhizoma repeus 



c r a s s i u s c u 1 u m 

 tereti-sub c o m p 1 a- 

 natimi 4-5 mm. in 

 diametro squamis 

 dense obtectum, 

 squamis hueari- 

 ovatis basi ad 

 apicem 1 cm. 

 loDgis basi peltatis 

 (partibus peltatis 

 ovatis 2 mm. longis 

 li mm. latis) medio 

 linearibus -J mm. 

 latis apice filifor- 

 mibus margiue re- 

 mote serrulatis. 

 Stipes subteres 20 

 cm. longus basi 

 phis miuus squa- 

 matus supra basin 



i 



Pig. 138, Ddvallia steiio^eph Hayata; .i, the pLint ; 

 sesle on the rhizome ; c, in.argm ot the s.ame ; d, a pmnule : 

 portion of the same ; f, a sorus. 



