LEGUMINOS^. (pulse FAMILY.) 125 



38 Galactia. Calyx 4-cleft, the upper lobe broaaest and entire. Style beardless. Bract 

 and bractlets minute, mostly deciduous. 

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



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



Suborder II. Ctesalpiniese. (Brasiletto Fa:mily.) 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 or dioecious. Trees. 



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



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



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



petals, and the stamens 3-5. 



Suborder III. Miniosefe. (Mimosa Family.) Flower regular, 

 small. Corolla valvate in sestivation, 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. Sclirankia. Petals united below into a cup. Stamens 8 or 10. Pod covered with 



small prickles or rougli projections. 



1. BAPTISIA, 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. Stameus 10, dis- 

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

 pointed, many-seeded. — Perennial herbs, with palmately 3-foli()late (rarely 

 siin]>le) leaves, which generally blacken in drying, and racenied flowers. 

 (Named from ^airri^w, to dye, from the economical use of some species, which 

 vield a poor indigo.) 

 * Racemes man>/, short and loose, terminal, often leafij at base . flowers ijelloiv. 



1. B. tinctdria, R. Br. (Wild Ixdigo.) Smooth and slender (2-3^ 

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

 i^-lV 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 haves. 



•<- Flowers ijelJow. 



2. B. villbsa, Ell. Sometimes soft-hairy, usually minutely pubescent 

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



