rOLYPODIACE.E. 



297 



subrectis superioribus plus minus sursum recurvis, pinnulis inforioribtLS a 

 rliachibus pinnaruin angulo S0-90 egressis rectis superioribus angulo 50'-60 

 cgressis subrectis ; segmentis pinnularum a rhachicle pinnularum inferioribus 

 angulo recto egressis superioribus plus minus a.scendentibus. Sori ad marginern 

 basis lateris superioris lobulorum pinnularum ordinis secundarii singulariter 

 dispositi partibus rccurvis marginis lobulorum frondis subobtecti. 



HAD. Nimandaira, leg. TAKEO ITO et B. HAYATA, Aprili. 1914. 



Near Hypolepis tenuifolia BERNH.; but differs from it by the much thinner 

 fronds with quite obtusely lobed terminal segments. Also near Hypolepis 

 punctata METT. (-Dryopteris punctata C. CH.), but easily distinguishable from 

 it by the chestnut coloured stipes and rhachis, and by the dark coloured fronds 

 in dried specimens. 



LeptocJiilus KAUL. 



Leptochilus angustipinnus HAYATA sp. nov. (Fig. 119). Rhizoma ? Frons 

 sterilis : Stipes 30 cm. longus medio 2|-3 mm. latus 

 basi minute densiuscule squamatus, squamis polygo- 

 no-oblongis subamoeboideis 1 mm. longis J mm. latis, 

 stramineus plano-convexus in sectione supra planus 

 subtus convexus supra 4-5 sulcatus ; frons ovato- 

 triangularis 45cm. longa 30cm. lata niedio latissima 

 basi minus lata vel requilata vel latior apice caudato- 

 acuminata basi in ambitu truncata pinnata, pinnis 

 linearibus infimis 16cm. longis, pinnis mediis sub- 

 {^quilongis superioribus gradatim brevioribus minori- 

 bus, versus apicem frondis ad pinnas laterales super- 

 rimas minimas 4-5 cm. longas abeuntibus ; pinna 

 terminali subito longior pinnas superrimas laterales 

 in longitudine 3-4-plo superanti vel interdum per- 

 fecte obsoleta et ad prolem reducta; pinna infirna line- 

 ari 15-1 6 cm. longa 2 cm. lata apice gradatim acumi- 

 natissima, acuminibus minus quam 3 mm. latis 2 cm. 

 longis, rneclio deorsum tequilata basi late triangulari- 

 acuta margine repandula, repandulis mediis 4 mm. 



Fig. 119, Leptochilus 

 anyustipinnus HAYATA; a, 

 a portion of a pinna of a 

 sterile frond ; b, a portion 

 of a pinna of the fertile 

 frond ; c, cross section of 

 the same ; d, a scale on 

 the stipe. 



