rOI.YPODIACE.K. 



267 



diflers from it l»y thc verv tliin herbaceoiLS fronds with very much smaller sori. 



Dennstaedtia scabra Moore (Fig. 99). ]\L\.tsuji. et Hayata Eniim. Pl. 



Formos. p. 594. Ehizoma repens venniforme recm-vimi mbescens vei-sas apicem 



clense pilosum hauil squamatum, pilis rubescentibiis vel albescentibus filiformi- 



bus 2 mm. longis adpressis vel ascendentibus 3 mm. in diametro remote frondi- 



geriun, frondibus a se 3cm. distan- 



tibus remote radicantibus, radicibiLS 



filiformibus ramosis. Stipes 16-35 



cm. longus medio 3 mm. ci-assus 



castaneo-ral)esceas muricatus basi 



squamato-pilosus sursiim .scaber niti- 



dus subglaber supra jirofunde sidca- 



tus subtei-es subtus convexus. Frons 



tripinnata in ambitu triangulari- 



ovata 12-40 



cm. longa 11- 



40 cm. lata 



apice triaugu- 



lari-acuminata 



basi iu ambi- 



tu triangulari- 



obtusa, pinnLs 



infimis longis- 



simis superi- 



oribus grada- 



tim minoribiis 



versus apicem 



subito minori- 



bus ad dentem 



ascendentem 



Fig. 99, DenmUedlia scabra Mookk 



aciuninis redu- sorus; c, hairs on thc frond. 



ctis, pinnis infimLs in si)ecimine maximo nostro acumiuato-triangidaribus 24 cm. 



longis 11 cm. latis apice aciuuiuatLssimis basi triangulari-obtusis latere inferiore 



