POLYrODIACE.^. 231 



KjOA-B). Rhizoraa rep«ns teres teiiuissimiim li mm. in cliametro sqnamatnm. 



Stipes usqne 9 cm. limgus uitidns fnsco-puruurascens 1 mm. in diametro scctionis 



gracillimus glaber l)asi ± sqnamatns. Frous lancoolata 



apice acuminatissima (acumini! linearl) a medio usqne ad 



basi iequilata basi sulitrimcata usque ad 17 cm. louga 



usque ad '2| cm. lata ])innata, ])iuuis mediis inferioribns 



subajqnilougis, sni)erioribus minoribiLS versns apicem ad 



deutem brevem abeuntibns, pinnis inferioribus a se 8 '9- - i '• 



.1 portion of the froml. 



nim. remotis augnlo 50^ a rbacbibus frondiura divari- 



catis oblique rectangnlaribns licra. lougis 4mm. latis versus apicem obtuso- 

 acutis ad sununum obtusis ± ascendeutibus Itasi acnto-cnneatis subsessilibus 

 vel brevissime petiolatis valde in;equilateralibus, latere superiore basi G ram. 

 lato, latero inferiore sulmuUo, margiue snjieriore obscnre crenatis margine 

 inferiore snbintegris ; pagiua utraque glabra tennissime membraua<"ea seurihya- 

 lina. Sori a niedio frondis snrsnm disjjositi. 



H.\]!. Arisau, ad 7(100 i^ed. alt., leg. B. Hayata et S. S.vsaki, .Tau., 1912. 



Tliis feru is of a form so strikinglv diftereui from ordiuarv one of the 

 tyiJe. Bnt, the transition from this estreme forra to tlie ordinarv one has 

 led me to regard the former as a variety of the latter, or more likely as a 

 mere form of tlie same species. 



Asplenium viridissimum Hayata sp. nov. (Fig. 161). Rhizoma? 

 Stijjes 40cm.Iougus liasi parco sqnaraatus purpureo-viridescans snperne glabratus 

 subviridescens, squamis angusto-linearibns 13 ram. longis 1;!- mm. latis vel 

 valde minoribns et ])iliformibiis. Frons lanceolata 70 cm. longa 3-j cm. 

 lata ajjice acuta vel acurainata basi iu ambita rotuudata tripinnati- 

 fida, pinnis inferioribus lougissimis, infimis plus minus brevioribus, snperi- 

 oribus gradatini rainoribus, piunis longissimis pyraraidali-lanceolatis 20 cm. 

 longis S cm. latis itbliqnis (latere suporiore latiore basi 6 cm. lato, latere 

 iuferiore minus lato 4 cin. lato) basi 10 cra. latis apice acuminatis (acumini- 

 bus pinuarura linearibns dentatis), pinnis infimis 5} em. longis 3 cm. latis 

 a]jice obtuso-acutis pinuatis vel ])iunatifidis jj^Tamidalibus basi latis- 

 simis petiolnlatis (iDetiolulis 3 mm. lougis), pinuulis ordinis ]n'imarii 

 utroqne latere pinnaj inferioris G-7, infimis (jvatis 18 ram. longis 10 mra. 



