POLYPODIACE^E. 23$ 



sitional forms from smaller to larger ones in one and the same specimen. 

 Further study in the field and exhaustive comparison with rich materials 

 will prove that this is a compound form of C. fraxinea FEE. 



Hypolepis BERNH. 



Hypolepis tenuifolia BERNH. COPELAND Polyp. Philipp., p. 95 ; DIELS 

 Natiir. Pfl.-fam. Pterid. p. 278, fig. 147-A. 



HAB. Koshun, Mt. Hieranzan, leg. B. HAYATA et S. SASAKI, Juni., 1912. 

 Plagiogyria METT. 



Plagiogyria adnata BEDD. Fern. Brit. Ind. t. 51. 



HAB. Shinko : Shibaraku, leg. U. MORI, Juli., 1906. 



Compared with a Japanese specimen so labelled in the Tokyo herbarium. 

 Pinnae of the fertile frond are more straight, (not crispate) longer and stronger, 

 than those of the Japanese specimen. Perhaps a variety of the type. 



Plagiogyria euphlebia METT. HAYATA Mater. Fl. Formos. p. 443. 



HAB. Arisan, ad 7000 ped. alt., leg. B. HAYATA et S. SASAKI, Jan., 1912. 



Plagiogyria falcata COPEL. in Philip. Journ. Sci. Bot. H.-2. p. 133, 

 t. I.-B. Plagiogyria Hayateana MAKING in Tokyo Bot. Mag. XX. p. 245. 

 Plagiogyria MatsumuroB HAYATA (non MAKING; Fl. Mont. Formos. p. 244. 



HAB. Arisau, ad 8000-7000 ped. alt., leg. B. HAYATA et S. SASAKI, 

 1912, Jan. 



Plagiogyria stenoptera DIELS. 



HAB. Arisan, ad 8000-7000 ped. alt., Lg. B. HAYATA et S. SASAKI* 

 Jan. 1912. 



Compared with a specimen so labelled in the herbarium at Tokyo. 



Pteris LINN. 



Pteris dactylina HOOK. Sp. Fil. H. p. 160 t. 130-A; HOOKER et 

 BAKER Syn. Fil. p. 155 ; BEDD. Handb. Fer. Brit. Ind. p. 108 fig. no 56 et 

 Fern. Brit. Ind. t. 23. 



HAB. Taito : Chakaukei, leg. U. MORI. 



DISTRIB. Nepal to Sikkim and Khasya, ascending to 9000 ft. 



Pteris excelsissima HAYATA sp. nov. (Fig. 167). Rhizoma? Stipes 

 150 cm. longus glaberrimus basi castaneo-ferrugineus superiore intus stramineus 

 intus profunde sulcatus validissimus basi 2 cm. in diametro sectionis. Frons 



