XYRIDE.E. 237 



lata plus minus complanata glabra fuscentia, testa tenuissimc membranacea 

 hyalina ; albumen copiosissimuiu fuscens ; embryo extremitate albuminis situs 

 linearis 3| mm. longus mm. latus. 



HAD. Sliintiku : Gakokitsu, leg. K. WATANABE, (fl. et fr. typ.!) ; in nionti- 

 bus Kappanzan, leg. U. MORI et Y. SHBIADA, Mart. 1910 (fl.) ; Nant5 : Bibyo- 

 naisan, leg. U. MORI, Juli. 1907, (No. 3492, fl.). 



The present species is somewhate near to the Japanese congener, E. japonica 

 ROTH, in the habit, leaves and in the spikes ; but greatly differs from it in 

 the very much longer bracts, in the patent flowers and in the stipitate anthers. 

 Very distinct species. 



Xyridese. 

 Xyris LINN. 



HOOK. f. Fl. Brit. Lid. IV. p. 365 ; BENTH. Fl. Hongk. p. 378 ; BENTH. et 

 HOOK. f. Gen. Plant, III. p. 842 ; ENGLER in Pfl.-fam. II-4 p. 20 ; DUNN et 

 TUTCHER Fl. Hongk. et Kwangt. p. 282. 



Xyris formosana HAYATA sp. nov. Herba scirpiforuiis scapifera, radicibus 

 fibrillosis multissimis. Folia omnia radicalia coespitosa angustissime linearia 

 plana hand teretia 10-25 cm. longa 1-3 mm. lata apice acuminata basi caulem 

 amplectantia lougissime vaginata interdum usque ad medium vaginiformia niar- 

 gine integra baud serrulata crassiuscula sub rnicroscopio ad paginam margineni- 

 qne minute muricata apice hand aristata. Scapi folia in longitudine valde 

 excedentes vel iis breviores 10-40 cm. longi teretes glabri Ireves haud ramosi 

 simplices minus vel plus quam 1 mtn. in diametro sectionis. Flores ad apicem 

 scapi capitatim siti, capitibus depresso-globosis circ. 1 cm. latis 8 mm. longis 

 apice rotunda tis basi truncatis, bracteis rigido-coriaceis obovato-rotundatis 5mm. 

 longis 4 mm. latis utraque pagine glabris extus valde convexis intus valde con- 

 cavis apice rotundatis basi late leviter cuneatis ad insertioneni 2 mm. latis sursum 

 rnedio castaneis versus marginem pallidioribus medio crassiusculis ad margiueni 

 teuuissimis apico dorso apiculis brevissirnis vel obsoletis instructis margiue 

 integris intus valde concavis florern unum amplectantibus ; bracteolis lateralibus 

 duabus hyalinis tenuissinie membranaceis ecoloratis plicatis in explicate obovatis 

 4^ mm. longis apice late acutis vel obtusis basi cuneatis dorso medio crasso- 



