fOLYPODIACE.i:. 307 



obtiisissimis basi obliqiiis latcie superiore aiiriciilatis latere ioferiore ciiueatis 

 subsessilibus margiue creuulatis ad siuus creuarum setula siugula iustructis 

 (setulis 1-2 mm. longis recurvis asceutleutibus) supra glabris subtiis ad costulas 

 sparse scjuamatis ; piuuLs iufimis brevioi-ibus plus miuus cleorsum reflexis superi- 

 oribus gradatim brevioribus versus apicem abrupte reductis acl dentem acumiuis 

 abeuntibus; rhachis semper alata cum alis l^mm. lata; costis rhachis vel pinu;i3 

 supra plus subtus miuus elevatis gracilibus. Fr. fertilis : stipes cjuam is sterUis 

 cluplo lougior : frous liuearis 8-12 cm. hmga 1-2 cm. lata piuuata apice obtusa 

 basi truucata, piuuis oblongis vel ellipticis vel jjIus miuus elongato-oblongis 3- 

 10 mm. longis 2-5 mm. latis apice obtusissimis basi rotundatis vel leviter 

 cordatis membrauaceis suboppositis vel alteruis inferioribus a se lcm. remotis 

 superioribus plus approximatis subtus dense soriferis, venis soriferis haud vel 

 vix incrassatis ; textura rigide membrauacea, rhachis haxid alata, pinuis brevLs- 

 sime petiolulatis. 



Polyhotrya appendlculata IIayata, iu Hayata et Matsuji. Euum. Pl. 

 Formos. p. 585 (non J. Sm.). 



Hab. Intcr Urai ct Eahao, leg. K. MiyajvE, Oct. 1899: Ivotosho, Loo-choo: 

 Okinawa. 



The preseut feru accords exceediugly well witli the figures giveu iu Blu3Ie's 

 Floras Javfe. This aud the x'recediug species were previously coufused aud 

 altogether regarded to be identical with P. appendiculata. After studying a 

 uumber of the feriis, I have fouud that there aro clcarly two forms whicli are 

 very coustant aud clo uot seem to be variable fi-om oue to the other. Oue 

 form represented by P. du^kato-senxda Hatata has the much longer frouds, 

 wingiess rhachis aud iiicrassate soriferous veins, whiL? the other, the pi"esent 

 species, has always much smaller sterile frouds with wiuged rhachis aud veiy 

 .slightly incrassate soriferous veius. Tlie former difters from P. appendiczilata iu 

 the pinuc-e, which are always acumiuate at the apex, while the hxtter accords 

 pretty well with the descriptiou of the same species giveu iu Hookee's Sji. Fil. 

 V. p. 251. Accordiug to Hooker," Christ"' aud Diels,"^ P. appcndicidata is 

 in the highest degree vaiiable. The description of Hooker includes many 



1) HooKEE, "\y. J.— Species Filicura V. p. 251. 



2) CnmsT, 11. — Famkriiuter der Erde ji. 4.". 



:'.) DiEi.s, L.— EsciL. u. Praxtl Nat. PH.— faiu. 1.-4, ^. 19G. 



