26G 



POIATODIACE,^':. 



Very near DavaUla pedata iSji., biit differs froni it l)y tlie mucli broader 

 involucnuu. 



Dcniistcedtia Berxii. 



Dennstsedtia leptophylla Hayata sp. nov. (Fig. 98). Ebizoma ? Stipes 

 lihis GO cm. longus brevissime birsutus in exsiccato fulvo-castaneus. Frons basi 

 tripinnata in ambitu ovata apice acuminata basi in ambitu obtusa 120 cm. longa 

 100 cm. lata, pinnis alternis inferioribus a se 17 cm. remotis a rhachide frondis 

 angulo 45° egressis, pinnis inferioribus longissimis, infimis paullo brevioribus, i)iii- 

 uis iuferioribus circ. 70 cm. longis oblongo-lanceo- 

 latis apice caudato-acuminatissimis basi trimcatis 

 breve petiolatis, pinnulis ordinis I. inferioribus 

 mediisque ;e(iuilongis lineari-lauceolatis, suijcriori- 

 biLs miuoribus versus apicem ad lobos acumiuis 

 reductis, mediis circ. 10 cm. longis medio 2cm. latis 

 ajiice caudato-acumiuutis basi latissimis basi laterc 

 sujieriore subauricidato-lobatis, pinuulis ord. II. oli- 

 longo-quadraugularibus, mediis 1 cm. lougis 4mm. 

 latis apice obtusis basi cuueatis latere superiorc 

 subauriculatis margino lobatis, (lobis oblongis ro- 

 tundatis aiiice obtusissimis sursum minute semila- 

 tis); textura teuuissima membranacea herbacea in 

 exsiccato pallido-viridis ^iagina supra niinus subtus 

 phis hirsuta ; rhachis frondis, pinnarumque in sectione phino-convexa supra 

 plana modio sulcata hxtere (utrofiiie) 1-sidcata subtus convexa rubescens hirsuta ; 

 rliachis pinnidarum comphmata auguste alata ; pinniilis inferioribiis ord. I. 

 Hubalternis a se 2cm. remotis a rhachide pinnamm angiilo 80°-90° egressis vel 

 interdiim deorsum reflexis teniiissimis, pinnidis ord. II. siibalternis a se 5-6 mm. 

 remotis a rhachide pinnidarum angido 80° egi-essis, pinnis iiinniilis I. vel 

 pinnulis II. plus minus ])etiohxtis vel siibsessilibiLs. 8ori in sinii loborum 

 l)innarum ord. II. siti. 



Hab. Urai, Jidi. 1912, leg. B. Hayata et tS. Sasaki. ■ 



Near Dennstxedtia cuneata (J. Sji. et Hk.) Chkist, but distinguishable 

 from it by the veiy much liirsute frouds. Also near D. Smithi! Moore, but 



Fig. 98, Dennilcedtia lep- 

 tophylla Hayata ; a, a iiiiinule; 

 b, portion of tlie same, sliow- 

 ing the position of a sorus ; c 

 anotlier sorus ; d, another 

 soriis. 



