ORDER XLIII. LEGUMIN0SJ2. 291 



7. L. angustifo'lia, (Pursh.) Similar to the preceding species, but 

 the leaflets vary from elliptical-oblong to linear; are smaller than tlio^o 

 of the L. capitata. — Grows through middle and southern Car. and Geo. 

 4—5 feet. 



The two preceding f!;enera are exoeeillngly perplexing in arranging descriptions even 

 of well-known species, from the frequent variation? produced by ditlerent circum- 

 stances ; and were we to disregard these variations, and describe tlie specimens as va- 

 rieties or distinct species, we siiould multiply the species and varieties to an indeflnite 

 extent. We have given descriptions of those whicii are well-established species. We 

 have little doubt that there are other species, when sufficiept examination shall hav« 

 determined their characteristics. 



Genus XXXIX.— AR'ACHIS. L. 16—10. 

 (From a, privative, and rachia, a branch, having no branches.) 



Calyx bilabiate. Legume gibbous, torulose, veiny, woody. 



1. A. hypog^'a, (L.) Stem pilose, procumbent. Leaves abruptly 

 pinnate. Flowers axillary. Peduncles becoming elongated, and de- 

 posit the legume under ground to ripen. — Yellow. 0. Native of 

 South America. Cultivated extensively in some parts of the Southern 

 States. Peanut. Ground Pea. Guber. 



Tribe VII.— GENISTE'^. 



Stamens 10, monadelphous ; anthers of two forms. Legume 

 continuous. Leaves simple or palraately compound. Herbs or 

 shrubs. 



Genus XL.— CROTALA'RIA. L. 1G— 10. 



(Greek krotalon, a castanet. In allusion to the rattling of the seeds in the pod.) 



Calyx slightly bilabiate, 5-cleft. Vexilluin cordate, large ; 

 keel generally acuminate ; wings somewhat plicate toward the 

 base. Stamens monadelphous, the tube cleft on the upper side ; 

 the 5 alternate anthers smaller. Legume pedicellate, turgid. 

 Seeds reniform. Herbaceous plants, with yellow flowers. 



1. C. sagitta'lis, (L.) Stem erect, branching, liirsuto. Leaves simple, 

 nearly sessile, oval, or oblong-lanceolate; stipules decurrent, acumi- 

 nate, sagittate. Flowers on rather short, few-flowered peduncle.*, oj^po- 

 site the leaves. Corolla about as long as the calyx or shorter. Lrgume 

 inflated, nearly black when matirre. Seeds small, smooth, and !«hiiiing; 

 when ripe, rattling in the capsule. — Yellow. 0. April — July. Ctun- 

 mon. 8 — 12 inches. liatlle-box. 



2. C. parviflo'ra, (Pursh.) Stem erect, hirsute, branching. Leaves 

 linear, or linear-lanceolate, nearly ses.sile, lower ones broader than the 

 upper, upper stipules decurrent. Peduncles oppo.-^ite tlie leaves, 3 — 7- 

 flowered; corolla about as long as the calyx or shorter. — Yellow. IC. 

 April — July. In shady soils, Mid. Car. aiid Geo. 10 — 20 inche.*. 



O. Pursh a, D. C. 



3. C. ova'lis, (Pursh.) Stem diffuse, decumbent, branching, hairy. 

 Leaves oval, petiolate ; stipules small, or wanting, sliglitly decurrent. 

 Flowers in racemes, oppo.>^ite the leaves, corolla equaling the calyx. 

 Legume slightly stipitate. — Yellow. 2^. April — July. Common io 

 dry sandy soils. G — 12 inches. 



