A28 -TETRANDRIA MONOGYNIA, Trapa, 
T RAPA. Rater. ete N. 208. 
. Calyx four-parted, or four-leaved. Corol fort petalled.” 
Germ inferior, two-celled ; cells from one to two-seeded ; at- 
tachment of the ovulum emeitil Nut turbinate, armed with 
two or four horns, (which were the leaflets of the calyx.) 
Embryo simple, lodged in the apex of the ample perisperm. 
1. T. bicornis, 
Nuts with two, opposite, recurved, — obitiice homs. 
2 Chins Lin ko, 
A native of China, where it is carefully | jultinntedi in agua 
ponds and other receptacles of water. | 
2. T. bispinosa, R. a , 
Nut with two opposite, araight) nati, spinous Jeni 
Neciary cup-shaped, curled. | sy es satel 
Shringaia, Asiat. Res, vol. iii, p. 253, 
Sans. Sringata, Julukuntuka, 
Beng. Panee-phul. Singhara. et 
» Panover-tsjerana, Rheed. Hort. Mal. vol. xi. p. 64. t. 33. 
(evidently intended for this plant, and not T. natans.) Found 
floating on sweet, standing water in Bengal and many sthat | 
_— of India. Flowering time the rainy season, | 
. Root consisting of numerous, simple, capillary Gbnes: which : 
eteciienabed under margins of the bipnaeiciensal sfenstedlic 
en leaves, Stems stoloniferous, often several feet long, float- _ 
ing. Leaves petioled, alternate, approximate round thas; 
apex of the shoots, of a rhomboidal-reniform shape ; with the 
posterior margins entire, and. the anterior ones serrate den-_ 
tate, smooth above, of a deep green, villous and purple un-_ 
derneath ; from three to four inches broad, and nearly as longs — 
Petioles, villous, lengthenidg with the age of the leaves, to- 
wards the apex: much smaller; this part contains many inflat= 
. ed ve scicles, sage Sites iin vines ‘buoyant, ae 
