332 POLYPODIACE^E. 



Cryptosorus ; and secondly, that Prosaptia, being phylogenetically quite different 

 from Davallia, should be kept quite distinct from the latter genus. 



JPolystichiim BOTH. 



Polystichum aculeatum Sw. var. variiforme HAYATA n. v. Pagina 

 frondis in vivo supra nitida atroviridis subtus pallida. Stipes cum rhachibus toto 

 squamatus, squamis lineari-lanceolatis fuscentibus ; pinnulae latiores quam ess 

 typicae 21 mm. longae 9 mm. lake oblique oblongaa apice triangulari-acutre basi 

 latere superiore plus minus auriculatce margine serrtilatfe, pinna3 inferiores a 

 se 6 cm. remofae. 



HAB. Funkiko, leg. B. HAYATA et TAKEO ITO, Mart. 1914. 



Differs from the type by the mucn larger and broader pinnules and much 

 remoter pinnae. On the whole, this variety has a very different aspect from 

 the type. 



Polysticlmm hololepis HAYATA sp. nov. Rhizoma ascendens apicc 

 caespitosum frondigerum dense nigro-squamatum. Stipes 20-30 cm. longus deor- 

 sum densissime nigro-squamatus sursum minute squamatus, squamis nigris 

 linearibus subulatis integris. Frons ovata versus apicern subito angustata ad 

 acumen abrupte abeuns 30 cm. longa 28 cm. lata apice acuminata basi in 

 ambitu cordata bipinnata, pinnis infimis extra-ordinariter longioribus 16 crn. 

 longis 7cm. latis lanceolato-triangularibus pinnatis latere inferiore duplo lati- 

 oribus quam latere superiore, pinnulis infimis longissimis superioribus gradatim 

 brevioribus, pinnulis infimis lanceolatis basi latissimis 5cm. longis 22mm. latis 

 pinnatifidis, segmentis lineari-oblongis apice breve aristato-acutis margine sur- 

 sum aristato-serrulatis deorsum integris; pagina utraque glabra subtus ad 

 costas sparse squamata in exsiccato pallido-viridis utraque pagine concolor, 

 pinnis inferioribus petiolulatis, superioribus et pinnulis sessilibus, pinnis in- 

 ferioribus a se 3-4 cm. remotis a rhachi frondis angulo 45" egressis, pinnulis 

 inferioribus a se 1 cm. remotis a rhachi pinnarum angulo SO'-^O" egressis, 

 superioribus gradatim se approximatis angulo acuto egressis ; textura tenuiter 

 coriacea vel chartacea. Sori per totam paginam prope costas vel costulas 

 lolx>rum utroque latere 1-seriatim siti. 



HAB. Taihoku, leg. TAKEO ITO et S. FUJII. 



Near Polystichum varium PRESL., but distinguishable from it by the much 



