POLYPODIACE^. 



301 



Fig. 12O-C, Leptochilus Kanashiroi HAYATA; a, a portion of the 

 sterile frond ; b, a portion of the fertile frond. 



tier surface of 

 the lamina 

 in the latter, 

 is not very 

 clearly pro- 

 ved to be 

 constant in 

 the Formosan 

 species. But, 

 the two ge- 

 nera are clearly separable each other by the veins, which in Polybotrya are all 

 free in both fertile and sterile fronds, but are anastmosing in Leptochilus. The 

 distinction of the two genera defined on this basis is the clearly seen in the 

 species just described and Polybotrya duplicato-serrata HAYATA appearing in p. 

 305 of this volume. 



Leptochilus virens (WALL.) C. CHR. Ind. p. 20. 



Gymnopteris virens BEDD. Fern. South Ind. t. 202. 



HAB. Banchoryo : Mt. Naiyezan, leg. U. MORI et Y. SHIMADA, Dec. 1907. 



The species is not well defined by descriptions; the figures given in BEDD. 

 Fern. South Ind. t. 202 and HOOK et Gn. Ic. Fil. t. 221, are considerably 

 different. Whether the plant mentioned here is really G, virens or not is 

 entirely questionable. 



Isindsaya DRY. 



Lindsaya orbiculata (LAM.) METT.; MATSUM. et HAYATA Enum PI. Formos. 

 p. 596, form, lobulata. 



HAB. Inter Kemogan et Rahao, leg. TAKEO ITO et S. FUJII, Nov. 1914. 



The form is quite different from the original form of L. orbiculata in hav- 

 ing obconical cuneate pinnules which are usually lobed at the margin. But, 

 the gradually transitional forms between this and the type have led me to 

 regard this fern to be a mere form of the latter. 



Microlepia PRESL. 



Microlepia hirsutissima HAYATA sp. nov. (Fig. 121 A-B). Bhizoma repens 

 supra 2-seriatim alternatim dense frondigerum subtus dense radiciferum dense 



