LKGUMINOS-E. (I'ULSE FAJIILl.) 95 



12. ' WISTARIA, Nutt. 



Calyx campaniilatc, somewhat 2-lij)pcd ; the upper lip broad, 2-cleft, the lower 

 3-(-left. Vexillum large, with 2 parallel ritlges at the base. Stamens diadelphous 

 (9&1). Legume coriaeeous, nearly terete, eontraeted between the seeds, at 

 length 2-valved. — Twining shrubs, with uneipially pinnate leaves, and showy 

 purple flowers, in a erowdcd raceme 



1. W. frutescens, DC. Young leaves and branches silky-pubeseent ; 

 leaflets 9-13, ovate-lanceolate or oblong; stipels none; racemes on short 

 l)ranehes, dense-flowered. (Thyrsanthus frutescens, Ell ) —Margins of swamps, 

 Florida to North Carolina, and west to Mississippi. April and May. — Leaflets 

 I 'long. Racemes 4' -C long, 2' -3' in diameter. Legume 1 -several-seeded. 

 Bracts large, caducous. 



13. TEPHROSIA, Pers. 



Calyx nearly equally .5-cleft or .5-toothed. Vexillum large, roundish, sjircad- 

 ing or refle.xed, usually white within, and reddish or purple and silky witliout ; 

 keel obtuse, cohering with the wings. Stamens momideljjhous or diadelphous. 

 Stvle smooth or laterally bearded. Legume compressed, linear, many-seeded. — 

 Perennial herbs, with une([ually pinnate leaves, with the leaflets opposite mucro- 

 nate and straight-veined, and white or purplish flowers. 



* Flowers siiu/le or hij pairs in the arils oj't/ie learcs ; the vp])ertnost often cromhd in 



a dense raceme. 



1. T. Virginiana, Pers. (Goat's Ruk) Soft-hairy and somewhat 

 hoary; stems very leafy, clustered, erect, simple; leaflets 11-25, oblong or 

 linear-oblong, acute or obtuse, smoothish above ; flowers yellowish-white tinged 

 with purple. — Dry pine barrens, Florida to ]\rississii)pi, and northward. June 

 and July. — Stems 1° - 2° high, from long and slender roots. Flowers showy. 



* * Flowers in lomj-peduncltd racemes opposite the leaves : rexillnm pubescent 



externallij. 



2. T. spicata, Torr. & Gray. Hirsute or villous with rusty hairs ; stems 

 simple or diffusely branched ; leaves scattered, short-j)etioled ; leaflets 9 - 1.5, 

 oval or cuneate-oblong, rouiulcd and strongly mucronate at the apex, smooth- 

 ish above; racemes 2-3 times as long as the leaves, 6-10-flowered ; lobes 

 of the caly.x linear-subulate ; flowers large, white and purple. (T. paucifolia, 

 Nutt. Galega villosa, Michx.) Varies with linear, acute, and reflexed leaflets, 

 the odd one elongated. — Dry soil, Florida to North Carolina, and westward. 

 June and July. — Stems 1° -2° long. 



3. T. hispidula, Pursii. Iloary-pubesccnt or smoothish ; stems slender, 

 terete, erect or procumbent ; petiole shorter than the lowest leaflets ; leaflets 1 1 - 

 1 .'), small (4" -6" long), oblong, acute or obtuse, often smooth above ; peduncles 

 slender, terete, commonly longer than the leaves, 2-4-flowered; flowers small, 

 purple. — Dry sandy soil, Florida to North Carolina, and westward. June and 

 July. — Stems 6'- 18' long. 



4. T. chrysophylla, Pursh Prostrate, rusty pubescent ; stems diff'usely 

 branched; leaves sessile or nearly so, short (I'-l^' long) ; leaflets (yellowish) 



