[*] _Leaflets large; stipules deciduous; the three upper anthers deformed and imperfect; flowers in short axillary racemes, the upper ones panicled; herbage glabrous_. 1. C. Marilándica, L. (WILD SENNA.) Stem 3--4° high; _leaflets 6--9 pairs, lanceolate-oblong, obtuse_; petiole with a club-shaped gland near the base; pods linear, slightly curved, flat, at first hairy (2--4´ long); root perennial.--Alluvial soil, N. Eng. to Fla., west to Mich., S. E. Neb., Kan., and La. 2. C. Tòra, L. Annual; _leaflets 3 or rarely 2 pairs, obovate, obtuse_, with an elongated gland between those of the lower pairs or lowest pair; pods slender, 6´ long, curved. (C. obtusifolia, _L._)--River-banks, S. Va. to Fla., west to S. Ind., Mo., and Ark. C. OCCIDENTÀLIS, L. Annual; _leaflets 4--6 pairs, ovate-lanceolate, acute_; an ovate gland at the base of the petiole; pods long linear (5´ long) with a tumid border, glabrous.--Va., S. Ind., and southward. (Adv. from Trop. Amer.) [*][*] _Leaflets small, somewhat sensitive to the touch; stipules striate, persistent; a cup-shaped gland beneath the lowest pair of leaflets; anthers all perfect; flowers in small clusters above the axils; pods flat; root annual._ 3. C. Chamæcrísta, L. (PARTRIDGE PEA.) Stems spreading (1° long); leaflets 10--15 pairs, linear-oblong, oblique at the base; _flowers (large) on slender pedicels_, 2 or 3 of the showy yellow petals often with a purple spot at base; _anthers 10, elongated, unequal_ (4 of them yellow, the others purple); style slender.--Sandy fields; common, especially southward. 4. C. níctitans, L. (WILD SENSITIVE-PLANT.) Leaflets 10--20 pairs, oblong-linear; _flowers (very small) on very short pedicels; anthers 5, nearly equal_; style short.--Sandy fields, N. Eng. to Fla., west to Ind., Kan., and La. 42. HOFFMANSÉGGIA, Cav. Calyx 5-parted. Petals 5, nearly equal, oblong or oval. Stamens 10, distinct, slightly declined; anthers dehiscing longitudinally. Pod flat, oblong, often falcate, few--several-seeded.--Low perennial herbs, or woody at base, punctate with black glands, with bipinnate leaves, and naked racemes of yellow flowers opposite the leaves or terminal. (Named for _Count von Hoffmansegg_, a German botanist.) 1. H. Jamèsii, Torr. & Gray. Herbaceous, finely pubescent; pinnæ 2 or 3 pairs with an odd one, the small oblong leaflets 5--9 pairs; pods broad, falcate, 1´ long, 2--3-seeded.--Central Kan. to Tex., Ariz., and Mex. 43. GYMNÓCLADUS, Lam. KENTUCKY COFFEE-TREE.