LEGUMINOSjE. (PULSE FAMILY.) 125 



88. Galactia. Calyx 4-cleft, the upper lobe broadest and entire. Style beardless. Bract 



and bractlets minute, mostly deciduous. 

 = = = Leaves 1 - 3-foliolate. Ovules and seeds only one or two. Flowers yellow. 



39. Rhynchosia. Keel scythe-shaped. Calyx 4 - 5-parted. Pod short. 



SUBORDER II. Csesalpinieae. (BRASILKTTO FAMILY.) Corolla 

 imperfectly or not at all papilionaceous, sometimes nearly regular, imbri- 

 cated in the bud, the upper or odd petal inside and enclosed by the others, 

 Stamens 10 or fewer, commonly distinct, inserted on the calyx. Seeds 

 anatropous, often with albumen. Embryo straight. 



Flowers imperfectly papilionaceous, perfect. Trees. 



40. Cercis. Calyx campanulate, 5-toothed. Pod flat, wing-margined. Leaves simple. 



* * Flowers not at all papilionaceous, perfect. Calyx 5-parted. Herbs. 



41. Cassia. Leaves simply and abruptly pinnate, not glandular-punctate. 



42. Hoffmanseggia. Leaves bipinnate, glandular-punctate. 



* * * Flowers not at all papilionaceous, polygamous of dioecious. Trees. 



43. Gymnoclatlus. Leaves all doubly pinnate. Calyx-tube elongated, at its summit 



bearing 5 petals resembling the calyx-lobes. Stamens 10. 



44. Gleditsehia. Thorny ; leaves simply and doubly pinnate. Calyx-tube short ; its lobes, 



petals, and tlie stamens 3-5. 



SUBORDER III. Mimosese. (MIMOSA FAMILY.) Flower regular, 

 small. Corolla valvate in aestivation, often united into a 4 - 5-lobed cup, 

 hypogynous, as are the (often very numerous) exserted stamens. Em- 

 bryo straight. Leaves twice pinnate. 



45. Desmanthus. Petals distinct. Stamens 5 or 10. Pod smooth. 



46. Schrankia. Petals united below into a cup. Stamens 8 or 10. Pod covered witk 



small prickles or rough projections. 



1. BAPTIST A, Vent. FALSE INDIGO. 



Calyx 4 - 5-toothed. Standard not longer than the wings, its sides reflexed ; 

 keel-petals nearly separate, and, like the wings, straight. Stamens 10, dis- 

 tinct. Pod stalked in the persistent calyx, roundish or oblong, inflated, 

 pointed, many-seeded. Perennial herbs, with palmately 3-foliolate (rarely 

 simple) leaves, which generally blacken in drying, and racemed flowers. 

 (Named from fta-mtfa, to dye, from the economical use of some species, which 

 yield a poor indigo.) 



* Racemes many, short and loose, terminal, often leafy at base , flowers yellow. 



1. B. tinct6ria, R. Br. (WILD IXDIGO.) Smooth and slender (2-3 

 high), rather glaucous; leaves almost sessile, leaflets rounded wedge-obovate 

 (i-H' long); stipules and bracts minute and deciduous ; pods oval-globose, 

 on a stalk longer than the calyx. Sandy dry soil, N. Eng. to Fla., west to 



Minn, and La. 



* * Racemes fewer, opposite the leaves. 



i- Flowers yellow. 



2. B. vil!6sa, Ell. Sometimes soft-hairy, usually minutely pubescent 

 when young, erect (2 -3 high) with divergent branches; leaves almost ses- 



