94 LEGUMINOUS. 



in the persistent calyx, roundish or oblong, inflated, pointed, 

 several seeded. — Perennial kerbs, with palmateJy o-foh'dte 

 (rarely simple) leaves, which gerwrcdly blacken in drying, and 

 racemed flowers. 



1. B. tinctoria, K. Brown. Wild Indigo. 



Smooth; stem branching; leaves palmately 3-foliate, almost ses.-ilc : leaflet^ 

 rounded wedgerobovate. acute at base, very obtuse, sometimes margined at apex. 

 stipuks setaceous; racemes few-flowered terminating the numerous branches. 



Sandy woods and gravelly hills ; common. Aug. Plant 2 to 3 feet high, bushy, 

 slender. Leaves bluish-ureen. Flowers yellow. G to 12 or more on each raceme. 

 Corolla l< 2 i ncn l° n S- -Legume about as large as a pea, on a long stipe, mostly 

 1-seeded." 



2. B. australis, Brown. Blue-flowered False Indigo. 



Smooth, tall and stout; leaves ternate on short petiole?, the upper ones nearly 

 sessile: leaflets oblong-wedge-form, obtuse ; stipules lance-linear as long the petioles, 

 rather persistent; raceme elongated, many-flowered, erect. 



Banks of streams. Near Eastern, Pa. Beck. Sometimes cultivated. June, July, 

 Stem 2 to 3 feet high, branched. Leaflets 1% to 3 inches long. % to 1 inch wide, 

 sometimes acute. Stipules' 1 /? to 1 inch long. Racemes 2 to 3 inches long, c\al- 

 pblong, on a stipe atout as long as the calyx. 



27. CERCIS. Linn. Red-bud. Judas-tree. 



Gr. kerkis, a weavers shuttle; alluding to the form of the legume. 



Calyx 5-toothed, gibbous at base. Petals 5, with claws 

 Bub-papilionaceous, all distinct. "Wings larger than the 

 standard. Stamens 10, distinct, rather unequal. Legume 

 oblong, flat, many-seeded, the upper suture with a winged 

 margin. — Trees with simple rounded heart-shaped leaves, de- 

 ciduous stipules, and rose-colored flowers in little vmltl-like 

 clusters along the branches, appearing before the leaves. 



1. C. Canadensis, L. Bed-hud. 



Leaves roundish-cordate, acuminate, villous in the axils of the nerves; legume 

 on short foot-stalks. 



Banks of streams, Southern part cf the State. March — May. A handsome tree 

 20 to 30 feet high, often cultivated. Leaves 3 to 4 inches by 4 to 5 entire smooth 

 7-veiued, on petioles 1 to 2 inches long. Flowers appearing before the leaves, 

 usually in abundance, in small lateral clusters. Corolla bright purple. Legume 

 about 3 inches long, acute at each end. 



Sub-order II. CJESALPINE.E. 

 Tribe 6. CASSIE.E. The Senna Tribe. 



4lomeni distinct, some of tJ em often imperfect: corolla open, irregular or almost 

 regular. 



28. CASSIA. Linn. Senna. 

 Sepals 5, scarcely united. Petals 5, unequal. Sta» 



