114 LEGUMINOSZ. (PULSE FAMILY.) 
SUBORDER ll. C€ZESALPINIE/E. BRASILETTO FAMILY. 
42. CIRCIS, L. ReED-BUD. 
Calyx campanulate, 5-toothed. Petals all distinct, the vexillum shorter than 
the wings. Stamens 10, distinct. Legume oblong, compressed, many-seeded ; 
the upper suture winged. — Trees, with broadly-cordate simple stipulate leaves, 
and reddish-purple clustered flowers appearing before the leaves. 
1. C. Canadensis, L. — Rich soil, Florida to Mississipi, and northward. 
February and March. — Tree 15°-20° high. Flowers very numerous, from 
lateral buds. 
43. CASSIA, L. SENNA. 
Calyx of 5 nearly distinct sepals. Petals 5, unequal. Stamens 5-10. An- 
thers mostly of different forms, opening by two terminal pores. Legume many- 
seeded. Seeds often separated by cross partitions. — Herbs or shrubs. Leaves 
abruptly pinnate. Flowers yellow. 
* Stamens 10, unequal: part of the anthers abortive: sepals obtuse: stipules 
deciduous. 
1. C. occidentalis, L. Annual, smoothish ; stem stout, branching ; leaf- 
lets about 10, ovate or ovate-lanceolate, acute; petiole with a globular gland at 
the base; racemes 2 —4-flowered, the upper ones crowded. — Waste places, com- 
mon. Ecce 19-5? high. Legume ih erect, compressed, slightly curved, 
3! - 4' long. 
2. C. obtusifolia, L. Annual, roughish ; stem slender, leaflets 6, cune- 
ate-obovate, with a tooth-like gland between the lowest pair ; flowers by pairs ; 
legume narrow-linear, 4-angled, recurved.— Waste places, Florida to North 
Carolina, and westward. Stem 19-4? high. Legume 6’-10/ long. 
3. C. Marilandica, L. Perennial, smoothish; leaflets 12-18, oblong, 
acute; petiole with a club-shaped gland near the base ; racemes several-flowered, 
the upper ones crowded, forming a compact panicle; legume linear, slightly 
curved. — Rich soil, Florida to Mississippi, and northward, August. — Stem 
3°-4° high. Legume 3! -4' long. 
4. C. angustisiliqua, Lar.? Smooth or nearly so; stem branched; ` 
leaflets 6-10, oblong, mucronate, very oblique at the base, hairy at the base 
beneath, with a globular gland on the petiole or between the lowest pair of leaf- — 
lets; flowers in a terminal panicle, on slender pedicels ; sepals oblong-oboyate ; 
petals yellow, veiny; perfect stamens oblong, the larger ones curved ; legume 
(3'-4! long) broadly linear, flat, straight or somewhat falcate, many-seeded- 
— South Florida. Feb. — Leaflets 9" ^12" long. Legumes 4” wide. 4 
5. C. biflora, L. Shrubby; leaflets 4 — 10, oblong, narrowed at the base, 
mucronate, with an obovoid gland between the lowest pair ; racemes 2 - 4-flow- 
 ered, often by pairs, slender, shorter than the leaves; fertile anthers 5; legume 
linear, fiat, straight or somewha demir Agios tinus ato : 
Leaflets 1’ long. Legume 3' 3 
