HYDEOCHARIDE^. 209 



sed cauleni amplectantia. Spatlia sessilis vel brevissime pedunciilata cylindrica 

 12 mm. longa 1^ mm. lata apice brevissima 2-lobata Lasi obtusa utroque latere 

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

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

 contractis. Petala 3 linearia 6 mm. longa \ mm. lata apice acuto-obtusa calycis 

 lobis 2i-plo longiora. Stamina 3, \\ mm. longa calycis lobis breviora. Styli 3 

 staminibus sequilongi basi coaliti lineares apice obtusi. Ovarium cylindricum 

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

 testa tenuissime membranacea. Semina fusiformia 1 mm. longa \ mm. lata 

 plus minus oblique leevissima, testa coriacea, latere uno tenuiter costata ; 

 albumen copiosum. 



HAB. Taihoku, Koteisho, leg. Y. SHIMADA, (No. 17) fl. et fr. 



Near Blyxa japonica MAX. and Blyxa caulescens MAX., but differs from 

 them by the much narrower fruits. I have examined several sets of the Japa- 

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

 equal in length as those of the Formosan species, but as twice broader than those 

 of the latter. The spathre of the Japanese are strongly 6-nerved, but those of 

 the Forrnosaii are very faintly nerved. 



Blyxa (Diplosiplioii) Shimadai HAYATA sp. nov. (Fig. 77-g). Herba aqua- 

 tica acaulis basi radices fibrosas radiatirn profuse emittens. Folia fasciculatini 

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

 acurninatissinia basi gradatim attenuata, nervo centrali distincte viso, nervis 

 lateralibus tenuissime obscure visis, margine integra mernbrauacea tenuissima, 

 venulis transversis tessellatim dispositis, glaberrima. Scapi uniflorati erecti 

 glabri exceptis floribus 1-3 cm. longi apice interdum folia unica instructi vel 

 hand foliati. Spatlia cylindrica ad apiceni scapi sita florem singulurn iucludens, 

 fructifera 3 cm. longa 1^-2 mm. lata glabra recta apice 2-lobata basi abrupte 

 truncata utroque latere tenuiter costata tenuissime membranacea fructus singu- 

 lum perfecte includens. Flores apertientes non visi; flores post anthesin fructi 

 feri: tubo calycis (ovario excepto) 2|crn. longo imm. lato glabro, lobis 3 lineari- 

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

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

 mis, antheris linearibus 1 J mm. longis ^ mm. latis apice acuniinatis. Styli 3 



