258 HYMEXOPHTLLACE.i:. 



fi-ondis et segmeutorum alata cum alis 2 mm. lata, alis uudulato-crispatis. 

 Sori ad apicem loborum juxta rhachin sitorum solitariter vel geminatiui dis- 

 positi. Involucrum ovatum dorso complanatum cu-c. 2 mm. longum 1 1 mm. 

 latum apice tnmcatum margine subintegiiim sed apice crenulato-deuticulatum 

 ad basin 2-valvatum. Pagina frondis secvis rhachin minute squamulata vel 

 squamis obsoletis. 



Hab. Mt. Arisan, inter Heishana ct Nimaudaira. 



HymenophyUum Simonsianum Hooker (Fig. 92); B.ucer Syn. ¥H. 

 p. 68. "iStipes slender, wirj% naked, 1-2 iu. long ; fi-onds liuear-oblong, 2-3 in. 

 long, |in. broad, once piimatifid down to a broadly-wiuged i-achis; segmenta 

 fan-shaped, with only shallow divisions directed fi-om the ai>ex towards the base; 

 veius dichotomoiLS, the margins spimdoso-dentate; sori 1 to 4, terminal on the 

 divisions of the upper pinnae ; involucnrm broadly oblong, divided nearly to the 

 base ; valves sjjinuloso-dentate " the description here quoted agrees exactly with 

 om* plant. The figures of the same species given in Hook. 2nd. Cent. Fern. t. 

 1.3 and Beddome Fern. Brit. lud. t. 281 accord pretty well with om- fern. 

 The foUowing description is drawn from a specimen of my collectioas : Khi- 

 zoma repens filiforme fusco-rubescens teres J mm. in diameti'o remote paucissime 

 squamatum iiitidmn ; squamEe ad basin stii)itum setuliformes fusco-rubescentes, 

 minus quam 1 mm. longas nitid». Stiiies 1-1 ^ cm. longus glaber vel pilis setuli- 

 formibus simrse conspersiLS castaneo-rubescens teres. Frons in ambitu elongato- 

 oblonga vel oblonga Sg cm.-T^ cm. longa 18-23 mm. lata apice rotundata vel 

 obtusissima basi late cimeata vel tniucato-cimeata ad basin breviter ad stijjitem 

 deccmTens pinnatifida inferiore cii"c. ad costam fissa medio circ. ad locum costa 

 i mm. distantem fissa sui^eriore pinnatUobata, segmentis generaliter cmieatis 

 subimilateralibus mediis 13 mm. longis 11 mm. latis obovato-cuueatis apice 

 obtusissimis basi cuneatis 4 mm. latis latere superiore 2-3-lobatis, lobis oblongia 

 obtusissimis basi haud constrictis, margine toto cmn rhachibiLs argute aristato- 

 serndatis, senulis patentibus vel leviter ascendentibus leviter recm-vis vel rectis, 

 textm-a hyalina membranacea iu exsiccato fulvo-vh-idi utraque imgine glabra 

 sed ad costas venas venulas pilis brevissimis clavatis rubescentibiLS conspersa, 

 costis venis venulisque utrariue pagine convexo-elevatis, venis lateralibiLS (i.e. 

 costis pinnarum vel loborura) a costa rhacliis angulo 40° egressis deorsum angu- 





