250 



POLYPODIACEJE. 



HAB. Hieranzan, prope Kusukusu, leg. B. HAYATA et S. SASAKI, Juui., 1912. 

 Polypodium morrisonense HAYATA Mater. Fl. Formos. p. 447. 

 Near Pleopeltls liemionitidea "M.ooEE.=Potypodiiim hemionitideum WALL., 

 but differs from it by the thin membranaceous texture. 



Polypodium pellucidifolium HAYATA sp. iiov. (Fig. 174). Rhizoma 

 repens teres squamis patentibus dense obtectum 3-4 mm. in diametro, squamis 



ovato-lanceolatis peltatis apice cuspidatis 



f\ ^r^^^i k as i ro ^ uu( ^ a ^ s castaneis. Stipes 10-9 cm. 



8li longus glaber intus (supra) profunde sulcatus. 

 Frons linearis 35 cm. longa 22 mm. lata apice 

 acuta basi acuta vel cuneato-acuta margine 

 integi'a vel crispato-undulata plus minus ten- 

 uiter desuper recurva vel plana supra nitida, 

 costa supra profunde sulcata subtus promi- 

 uente elevata, venis lateralibus subrectis a 

 costa angulo 65 egressis supra nigro-coloratis 

 leviter flexuosis valde distinctis subtas tenui- 

 ter elevatis prope marginem evanescentibus, 

 reticulis venularum supra visis ; textura 

 tenuiter coriacea pellucida. Sori uuiseriatim 

 a infra medium usque ad apicem froudis 

 dispositi, inter venas laterales soh'tarii. 



HAB. Arisan, leg. B. HAYATA et S. 

 SASAKI, Jan., 1912. 



Near P. Engleri, but differs from it by 

 the shining semi-transparent larger fronds 

 with distinct veins. 



Polypodium obtusifrons HAYATA n. 

 sp. (Fig. 175). Rhizoma repens teres 2 mm. 

 .-, D crassum squamis dense obtectum, squamis 



Fig. 174, J^otypodium pellucidi- 

 folium HAYATA ; a, the plant ; b, a castaneis cuspidato-rotundatis 2 mm. longis 



scale on the rhizome; c, a portion ^ , ,. . , , , ., ,. 



f ,, . . 1 mm. latis apice obtuse lateque cuspidatis 



or the ironcl ; d, margin of the 



basi dilatatis rotundatis profunde cordatis, 



