344 DECANDRIA MONOGYNIA. — Senna. 
cous. Flowers terminal and axillary, when terminal they 
form an uninterrupted raceme ; when axillary they are 
three, four, or five, on a very ‘dines common pedunele. 
Pedicels much longer than the peduncle. Calyx, scarcely” 
half the length of the corol.. Corol, the lower two petals, 
rather smaller than the other three, and closer together. 
Filaments, the lower one small and abortive, the next pair 
largest, the next two pairs smaller, and with the large 
pair, fertile, the upper one small, and barren. Legume 
nearly straight, when full grown about as thick as a ag 
tan and nearly cylindric. Seeds numerous. 
9. S. obtusa, R- 3 
Diffuse. Leaflets five-pair, obovate obtuse. Petioles 
without glands, Stipules cordate-lanceolate. Racemes 
axillary. Legume lunate. "fee 
Cassia senna. Burm. H. Ind, t. 35. f. 2. 
A native of the high, dry, uncultivated lands of My- 
sore, where the leaves are used as a substitute for semm = 
The seeds were sent by Dr. Buchanan from Seringapa- 
tam to the Botanic garden at Calcutta, where the or 
thrives well, flowering and ripening its seed most part of 
the year. — # 
Root perennial. _ Stems scarcely any, but many strage 
gling branches resting on the ground, . Leaves. nearly bi- 
farious, five or six inches long. Leaflets from four to Si& 
pairs, linear-oblong, with the exterior pair more cuneat®, 
all obtuse, and somewhat villous, about one ait? 
Petioles slightly channelled without any appearance of 
glands. Stipules tapering, from an ovate-cordate base. 
Racemes axillary, solitary, shorter than the leaves, beat- ; : 
ing a few small, yellow, short-pedicelled flowers. Bractes 
ovate-cordate, acuminate, concave, one-flowered. Caly* 
about a third shorter than the corol. Filaments, the t° 
uppermost small and sterile. Legume broad, shin canes 
pres croonsils in one potpesins smooth 5 
