HYDROCHARIDE.E. 209 



sed caulem amplectantia. 8patlia sessilis vel brevissime pedimcnlata cylindrica 

 12 mm. longa 1§ mm. lata apice brevissima 2-lobata basi obtusa iitroque latere 

 tenuissime costata. Calycis tubus (ovario excepto) filiformis 1-2 cm. longus imm. 

 latus, lobis 3 oblongo-linearibus 2 mm. longis ^ mm. latis apice obtusis basi haud 

 contractis. Petala 3 linearia 6 mm. louga ^ mm. lata apice acuto-obtasa calycis 

 lobis 2J-plo longiora. Stamiua 3, l^ mm. longa calycis lobis breviora. Styli 3 

 staminibus nBquilongi basi coaliti lineares apice obtusi. Ovarium cylindricum 

 S mm. longum 1 mm. latum. Fructus cylindricus a spatlia ad 5 mm. exsertus, 

 testa tenuissime membranacea. Semina fasiformia 1§ mm. longa J mm. lata 

 plus miniLs oljlique lasvissima, testa coriacea, laten; uno tenuiter costata ; 

 albumen copiosura. 



Hab. Taiboku, Koteislio, leg. Y. Shimada, (No. 17) fi. et fr. 



Near Blyxa Japonica BIax. and Blyxa caulescens BIax., but differs from 

 them by tlie mucli narrower fruits. I bave examiued several sets of the Japa- 

 nese species with the ripe fruits. The fruits of tho Japanese species are nearly as 

 e(iual in length as those of the Formosan species, but as twice broader than those 

 of the latter. The spathaj of the Japanese arc strongly 6-nerved, but those of 

 the Formosan are very faiutly ncrved. 



Slyxa {Diplosiphon) Shimadai Hayata sp. nov. (Fig. 77-g). Herba aijua- 

 tica acaidis basi radices fibrosas radiatim profuse emittens. Folia fasciculatim 

 disposita omnia radicalia lineari-lanceolata circ. 12 cm. longa 7 mm. lata apice 

 acuminatissima basi gi-adatim attenuata, nervo centrali distincte viso, nervis 

 lateralibus teuuissime obscm-e visis, margiue iutegra membranacea tenuissima, 

 venulis transversis tessellatim dispositis, glaben-ima. Scapi imiflorati erecti 

 glabri exceptis floribiLs 1-3 cm. longi apice interdum folia unica instmcti vel 

 haud foliati. Spatha cylindrica ad apicem scapi sita florem singuliim inchidens, 

 friictifera 3 cm. longa l^-^ nim. lata glabra recta apice 2-Iobata basi abrupte 

 truncata utroque latere tenuiter costata tenuissime membranacea fractus singu- 

 lum perfecte includens. Flores apertientes uon visi; flores post anthesin fi-ucti 

 feri: tubo calycis (ovario excepto) 2icm. longo ^mm. lato glabro, lobis 3 liueari- 

 biLS 5 mm. longis 1 mm. latis apice obtusis glabris. Petala 3 linearia post 

 anthesin evanescentia. Stamina 3, filamentis filiformibus 2 mm. longis tenuissi- 

 mis, antheris linearibus \\ mm. longis -f^ mm. latis apice acuminatis. Styli 3 



