162 



POLYPODIACE.E. 





tt« 



simis 21 cm. latis trancatis sessilibus a se 2^ cm. remotis aiigulo recto divari 

 catis pinnatim fidis inferiore ad rliachin iadis superiore prop>e rhachin fidis- 

 segmentis inferioribus rectangularibus 13 mm. longis 5 mm. latis apice subtnm- 

 catis \tl rotimdatis margine remote obscureqne serriilatis vel subintegris apice 

 denticulatis ; frons cliartacea, costa, pinnanmi supra 

 subplana subtus elevata, venis et venulis supra uou 

 elevatis vix visis subtus castaneo-coloratis temus- 

 simis distincte visis. Sori utroque latere costulfe 

 segmeutonun 1-seriatim dispositi. 



Hab. Ai-isan, leg. B. H.\yata et S. Sas.\ki, 

 Jan., 1912. 



Near D. ^xicliyphylla 

 HAY.iTA, but differs from it 

 by the tliiuner, less black 

 and less ciliated scales ou 

 the rhacliis, and by the 

 thiuuer fronds. 



Dryopteris (Eudry- 

 optcris) leptorhachiaH\Y.v- 

 TA sp. nov. (Fig. 102). 

 Rliizoma erecto-ascendens. 

 Stipes cum rhachibus nitidus 

 castaneus vel castaneo-rubes- 

 ceus 50 cm. longus inferiore 

 dense superiore parce squa- 

 matus, squamis inferioribus 

 liueari-laneeolatis apice acu- 

 minatis 2 cm. lougis 2 mm. 

 latis. Fi'ons ovata 40-50 cm. 

 longa 30-40 cm. lata bipin- 

 uata,, pinnis inferioribns 

 Fig. 102, i)ri/op<em iep(or/i/jcftsa Hayata ; a, thepknt; Jongioribus a Se 11 cm. re- 

 b, a hair on the costa of a pinnule ; c, a pinnule or a segment 

 of a pinniUe ; d, e, glandular hairs on ihe costa of a pinnnle motis auglllo 40° a rliachibus 



