10S 



the female below and male above. Sepals 3, reflexed in flower, ovato- 

 elliptical to oblong, obtuse, entire, herbaceo-membranaceous, scarious to- 

 wards the margin, light-green shaded with rose-colour, persistent, about 

 7-8 mm. long. Petals 3, ample, patent, broadly orbicular, white, 

 deciduous. Male flower : Stamens numerous, shorter than the sepals, 

 aggregated ; filament short, glabrous, linear-oblong ; anther elliptical to 

 narrowly oblong, auricula ted at the base, extrorse, equalling or longer than 

 the filament in length, basifixed, yellow. Female flower : Rudimentary 

 stamens minute ; ovaries numerous, crowed in a spherical head on a 

 globular receptacle, curved upwards and lunato-ovate, laterally much com- 

 pressed, alate-margined, tapering above towards a short and ascending 

 style and minute stigma. Fruit globose, hardly depressed, accompanied 

 by persistent sepals below, green ; the receptacle elevated and globular ; 

 carpels very numerous, crowded, laterally much compressed, cuneate, turned 

 upwards and acutely rostrate, more or less striate on both lateral faces, 

 having a rounded and subcristate outer margin. Seed obovato- oblong, 

 compressed laterally, with a hamate embryo. 



SagiUaria sagittifolia var. AginasJii Makino Notes on Jap. PI. XV. 

 in Bot. Mag., Tokyo, VI. 1892, p. 49. 



Hab. Prov. Oshima ' in Hokkaido : Hakodate {R. Yatabc and K. 

 MiyabeX herb. Sc. Coll. Imp. Univ. Tokyo, Aug. 10, 1878); Prov. Iwaki : 

 Maniwa near Sakamoto in Watari-gori {T. Makino I Aug. 17, 1890); 

 Prov. Mikawa: Takashi-mura (T. Makino I Oct. 29, 1894, Aug. 1899); 

 Prov. Suo: Ochi-mura (D. Nikail herb. 1. c. Aug. 26, 1892); Prov. 

 Musashi: Himonya (T. Makino \ Aug. 1901). 



This species sparingly dispersed over Japan ; it is remarkably peculiar 

 by having small numerous tubercules at the base within the vagina of 

 petioles and having no stolon. 



Sagittaria sagittifolia Linn, forma sinensis (Sims) Makino. 



Stout, stoloniferous ; stolons long, in its end with a globose tuber which 

 is attaining about 4 cm. or more in diameter. Leaves ample, long-petioled, 

 sagittate, broadly ovate, very slightly produced and obtuse at the apex, the 

 basal lobes usually longer than the terminal lamina, ovate, acuminate with 

 very sharply pointed apex, the sinus close towards the bottom and then 

 open forwards ; petiole stout, angulate, vaginate at base. Flower some- 

 times appeared ; rachis branching below. 



SagiUaria sinensis Sims Bot. Mag. 1814, tab. 1631; Spreng. Syst. 

 Veg. II. p. 633. 



