354 DECANDRIA MONOGYNIA, Senna. 
Stipules at the base cordate, tapering to an acute point. 
Peduncles above the axils, one or two, one-third the 
length of the leaves, one-flowered. Bractes one or more 
embracing the base of the peduncle, and two opposite 
near the apex. Flowers yellow, the stamens being much 
shorter than the pistil, bow till the germ is impregnated. 
Stamens ten, nearly equal. Legume erect, linear, flat, 
from fifteen to twenty-seeded. 
_ Note. Itis at first sight very much like S. prostrata but 
on examination they prove very different. The leaves are 
considerably more sensitive than any other of this genus, 
that I know. 
22. S. tenella. R. abe 
Biennial, erect, ramous. Leaflets from fifty to sixty 
pair, minute, linear-lanceolate mucronate, a flat gland 
between the lower pair. Petioles sharp-edged and crenu- 
late on the upper side. Flowers one or two, rarely three, 
above the axils. Anthers ten, all fertile. ae from 
ten to twelve-seeded. 
It isa native of the interior parts of Bengal, and from a 
thence was introduced into the Botanic garden at Cal- 
cutta, by Dr. W. Carey in 1799, where it blossoms during 
the rains, and the seeds ripen during the cold season. 
Root about biennial in the Botanic garden at Calcutta. 
Stem erect, slender, with many expanding, slender, bifa- ) 
rious, somewhat hairy branches, height of the whole plant, 
ina good soil from two to three feet. Leaves alternate, 
bifarious, pinnate, from two to three inches long. Leaflets 
from forty to sixty pairs, very small, lanceolate, mucro- 
nate, and smooth. Petioles villous, with the upper-edge 
sharp and crenulate, and a large flat cland at the lower 
pair of leaflets. Stipules semilanceolate, acute. Peduncle, 
common, a little above the axils, short, each bearing 2 — 
succession two or three, pretty large, bright yellow flow- 
ets on long pedicels. | Bractes one at the base of each 
