Aponogeton, ‘HEXANDRIA TRIGYNIA. 209 
furrowed, otherwise smooth; from one to three feet high. 
Leaves alternate, all petioled, lanceolate ; the superior or 
floral leaves linear, and very smooth ; all are entire, wav- 
ed and smooth, from one to twelve inches long. Petioles 
with a trifling membranaceous vagina at the base; _verti- 
cels numerous, approximate, consisting of numerous, 
drooping, pedicelled flowers. Calyx; leaflets linear, 
small. Corol, valvelets ovate-lanceolate, callous grained 
on the outside; at the flowering time they are entire, and 
as the seed advances to maturity become toothed on the 
sides, by which time the grains are very large, oblong- 
ovate, and with a granulous surface. Style short, fili- 
form. Stigmas pencil-shaped, 
Observation. 
This differs from R. acutus of Europe in being annual, 
and I think it may be a different species. I must however 
leave it to those to point out wherein they differ, who have 
an opportunity of doing so with the living plants before 
them. Every part thereof possesses a considerable de- 
gree of astringency and bitterness, without any thing like 
acidity, 
2. R. vesicarius. Willd, 2. 256. 
Flowers hermaphrodite, geminate; all the valves very 
large, membranaceous, reflexed. Leaves undivided. 
Sans. Shutavedhee. 
Beng. Chooka-palung. 
Arab. Humarbostanee. 
Pers. Toorshumuk. 
Found cultivated in gardens all over Asia, and Gaod by 
the natives in their food, as well as medicinally. 
APONOGETON. Schreb. gen. n. ae 
_ Calyx, or corol two-leaved. Capsules three or four, 
superior, each containing two, or more seeds. _ 
Aa 
