LEGUMINOS.E. (iTI.SIC FAMILY.) 113 



Pod stiilked in the persistent calyx, roundish or olilon<^, inflated, poiiitetl, many- 

 seeded. — Perennial herbs, with palniately .3-fuli()latc (rarely simple) leaves, 

 whieh ;renenilly hlaekeii in dryiii;;, and raeenied flowers. (Named from iiajir'i^oi, 

 to dije, from the econoinieal u.se o( i^ome sj)ecies, whieh yield a poor indi;;o.) 



1. B. tinctdria, U. Pr. (Wild Indigo.) Smooth and slender (2°- 30 

 lii^h), rather filaiicoiis; k'uvos almost sessile ; leaflets ronnded wedge-obovatc 

 (!{' lonji) ; slijinld! (uul hnicts iiiiniit)- (iiiil daiditoiis ; rarcmis fi v-Jlturcrrif, tcrminat- 

 ili<;- the Inishy hraiiehes ; pods oval-};lol)ose, on a stalk lonj^er than the calyx. — 

 Sandy dry soil : common. June- Aujr- — Corolla yellow, ^' long. 



2. B. austl'klis, K.Br. (BuK FALSii-lNDiGO.) Smooth, tall and stout 

 (4° -5°); leaflets oblonjj-wedge-form, obtuse; stipules lanaolate, as long as llie 

 jwtioks, rather /lemislciit ; raceme eloiirjated ( 1 ° - 2° ) and maui/-Jhwerrd, erect ; bracts 

 deciduous; stalh of the oval-ob/onff podf af)out the lent/th of the ca/yr. — Alluvial soil, 

 from Pennsylvania westward and southward: often cultivated. June. — Flow- 

 ers 1' lonji, indigo-blue. Pods 2' -.3' long. 



3. B. leucantha, Torr. & Gr. Smooth ; stems, leaves, and racemes as in 

 the foregoing ; stiimlcs ear/// deciduous ; pods or<d-o!i/oii(j, raif.ed on a stad.- J'ulli/ twice 

 tlie Itmjtit of the cali/x. — Alluvial .soil, Ohio to Wisconsin and .southwestward. 

 July. — Flowers white ; tho standard short. Pods 2' long. 



4. B. ^Iba, li. Br. Smooth (l°-.3° high) ; the branches slender and icidoly 

 sprmdiiKj : jietioles slender ; stipules and bracts minute an(\ deciduous; leaflets ob- 

 long or oblanceolatc ; racemes slender on a long naked peduncle; pods linrar- 

 ohlong {I'- \^' lon-^), short-stalhed. — Dry soil, Virginia and southward. May, 

 June. — Flowers white, 6" -9" long. 



•>■ B. leUCOphaea, Nutt. ITain/, hue (1° high), with direrrjent branches; 

 hares (dniost sissi/, : it'aflcts narrowly oblong-obovate or spatulate ; stipules and 

 bracts lar(/e and liafi/, persistent; racemes lonrj, reclined ; Jlowers on elonf/ated ftedi- 

 cels ; pods ovoid, hoary. — Michigan to Wisconsin and southward. April, May. 

 — Raceme often 1°, pedicels l'-2', the cream-colored corolla 1', in length. 



32. CLADRASTIS, Puif Yellow- Wood. 



Calyx 5-toothed. Standard large, roundish, reflexcd : the distinct kcel-pctals 

 and wings straight, oblong. Stamens 10, distinct: filaments slender, incurved 

 nl)0ve. Pod short-stalked above the calyx, linear, flat, thin, marginless, 4-6- 

 secded, at length 2-valved. — A small and handsome tree, with yellow wood, 

 smooth bark, nearly smooth pinmitc leaves of 7 - 11 oval or ovate leaflets, and 

 ample panicled racemes (10" -20" long) of showy white flowers drooping from 

 the end of the branches. Stipules obsolete. Base of the petioles hollow, and 

 enclosing the leaf-buds of the next year. Bracts minute and fugacious. (Name 

 of obscure derivation.) 



1. C. tinctdria, Haf. (VirgHia lutca, .l//c//.r. /:) Rich hillsides, E. Ken- 

 tucky and southward along the western ba.sc of the Allcghanies. May, June. 



33. CERCIS, L. RKD-nin. Jri)AS-Tnr.E. 



Calyx 5-toothed. Corolla imperfectly pai)ilionaceous : standard smaller than 

 the wings, and enclosed by them in the bud : the keel-pcUils larger and not 



