Senna. DECANDRIA, MONOGYNIA. 341 
4. S. toroides. R. 
- Annual. Leaflets three pair, cuneate, obovate, a ope 
late gland. between the lower pair only, — Flowers in axil- 
lary pairs on a short common peduncle. Stipules subu- 
late. Legume linear, four-sided. 
The seeds of this plant were sent from Mysore to the 
Botanic garden at Calcutta by Dr. Buchanan in 1800, 
and about the close of 1801 the plants blossomed. 
Stem annual, erect, somewhat woody. branches ; spread- 
ing, height of the whdle plant about six feet. Leaves 
pinnate, spreading or drooping. Leaflets three pair, oc- 
cupying the exterior half of the petiole, obovate-cuneate, 
sessile, entire, villous ; the lower pair smaller ; all some- 
what acuminate, with a small soft bristle, from one 
to two inches long. Glands, a single, yellow, subulate 
one between the lower pair of leaflets only. Stipules 
subulate, villous. _ Flowers axillary, in pairs, large, yel- 
low, on long pedicles, inserted on a short common pedun- 
cle, with some small bractes about the insertion, one of 
the two uniformly proves abortive. Petals, the upper one 
obcordate, the rest oval. Filaments, the three upper ones 
minute, and abortive ; the lower seven nearly equal and 
fertile. Legume long, straight, four-sided, with a dou- 
ble groove, or three keels on each margin, from six to 
nine inches long. Seeds numerous, from twenty to thir- 
ty, trapeziform, smooth, pale brown, __. De 
_This plant is allied toC. Tora. The best ‘specific dif. 
ference is one gland only, and that between the lower 
Pair of leaflets, in Tora there are always two, that i is 
pee between each of the two lower pairs. But in appear- 
ance and smell the difference is very great, This grows 
nearly erect, to the height of six or more feet, and has_ 
little or no smell whereas in the same soil, and with the 
Same treatment. Tora is diffuse, rarely more than one oF 
two feet high, the flowers and legumes are much oe 
‘and the smell very different, 
