MATERIALS FOE A FLORA OF FORMOSA. 441 



too, J mm. latno, rectnc ; rhaches pimiarum complanatae, tenuissimae, 

 alata?, J mm. late, (medio costis supra planis subtus prominentibus) 

 supra utraque latere costarum elevato-striatae, ad striam remote pilis 

 aristatis dispersae, pilis plus minus recurvis a latere complanatis, 

 1 mm. longis, \ mm. a basi latis ; paginae supra parcissime aristato- 

 pilosœ, (pilis 1 mm. longis, \ mm. a basi latis, complanatis, paten- 

 tibus), subtus glaberrimae, venis simplicibus velfurcatis, venulis sim- 

 plicibus liberis apice prope pinnularum apicem evanescentibus. Sori 

 utrinque latere costarum pinnularum 2-3-4, arete prope costas dis- 

 positi, elongate -oblongi, ad basin venularum latere superiore laterales. 

 Indusium elliptico-oblongum 1| mm. longum, | mm. latum, margi- 

 nibus liberis erosis, unilateraliter venula adnatum. 



Hab. Tözan, leg. G. Nakahara, 1907. 



Near A. v avians, but differs from it in the shape of the pinnae 

 and pennules. 



Athyriimi Eoth. 



Athyrium oppositipennum Hayata sp. nov. Stipites 10 cm. 

 longi, subglabri, plus rninus minute muricati, supra tenuissime 

 bisulcati. Frondes ambitu lanceolat<T, membranacea) graciles 19 

 cm. longa», 8 cm. lata\ apice acuta\ basi obtusae, l-2-pinnata3, 

 ))iniiis horizontal iter transverse patentibus utraque latere 14, in- 

 fcii()ri])i]s a se 2 cm. remotis, juxta-infimis longissimis lan- 

 ceoiatis, 5.^, cm. longis, 1 cm. latis, a basi usque ad medium 

 incurve ascendentilms sursum recurvis descendentil^us ; pinnis versus 

 apicem frondis simplicibus brevioribus in lobos apicalcs abeun- 

 tibus ; pijinis modioci'ilms 1)asi ]')innatis a medio sursuin pin- 

 natlfidis vd ;i(l tnt;im longitudinem ]>innatifidis, vol sursum 

 d(>nt;iin-imiii;iti(i(lis Mpicc dentatis ; ]>innnlis vel segmentis 



