rOLYl-ODIACEyK. 



301 



Fig. 120-C, Lepiochilits Kanashiroi Uayata; a, a portion of tlio 

 sterDo f rond ; b, a portion of tlic fertilo frond. 



dcr siu'face of 



the lamiua 



in the latter, 



is not ver}- 



clearly pro- 



ved to be 



constant in 



the Formosan 



species. But, 



the two ge- 



nera are clearly sepai'able each other Ly tlie veins, which iu Polyhotrya are all 



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



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



species just described aud Polybotrya duplicato-serrata Hayata appearing iu p. 



305 of this volume. 



Leptochilus virens (Wall.) C. Che. lud. p. 20. 



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



Hab. Banchoryo : Mt. Naiyezan, leg. U. MoRi et Y. Shijiada, Dec. 1907. 



The species is not well defined by descriptioiis; the figures given in Bedd. 

 Fern. South Ind. t. 202 and Hook et Ge. Ic. Fil. t. 221, are considerably 

 different. Whether the plant mentioned hero is really G, vireiis or not is 

 entirely questionable. 



Lindsaya Dev. 



Lindsaya orbiculata (Lam.) Mett.; Matsum. et Hayata Euum Pl. Formos. 

 p. 596, form. lobulata- 



Hab. Inter Eemogau et Eahao, leg. Takeo Ito et S. Fujii, Nov. 1914. 



Thc form is quite diflerent from thc origiual form of L. m-hiculata in hav- 

 ing obcouical cuneato piuuules which aro usually lobed at thc margin. But, 

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

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

 31icrolepia Presl. 



Microlepia hirsutissima Hayata sp. uov. (Fig. 121 A-B). Pvhizoma repens 

 supra 2-seriatim alternatim dense frondigerum subtus dense radiciferum dense 



