LEGUMINOS^. (pulse FAMILY.) 95 



12. WISTARIA, Nutt. 

 Calyx campanulate, somewhat 2-Iippcd ; the upper lip broad, 2-cloft, the lower 

 3-cleft. Vexillum large, with 2 parallel ridges at the base. Stamens diadelphou» 

 (9&1). Legume coriaceous, nearly terete, contracted between the seeds, at 

 length 2-valved. — Twining shrubs, with une(iually pinnate leaves, and showy 

 purple flowers, in a crowded raceme. 



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

 leaflets 9 - 13, ovate-lanceolate or oblong ; stipels none ; r.acemes on short 

 branches, dense-flowered. (Thyrsanthus frutescens, EU ) —Margins of swamps, 

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

 riong. Racemes 4' -6' 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, roimdish, spread- 

 ing or reflexed, usually white within, and reddish or purple and silky without ; 

 keel obtuse, cohering with the wings. Stamens monadelphous or diadolphous. 

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

 Perennial herbs, with unequally pinnate leaves, with the leaflets opposite mucro- 

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



* Flowers sinyle or hy pairs in the axils of the leaves; the uppermost ojien croivded in 



a dense raceme. 



1. T. Virginiana, Pers. (Goat's Rue.) 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 Mississippi, and northward. June 

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



* * Flowers in long-peduncled racemes opposite the leaves : vexillum pubescent 



externally. 



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

 simple or diffusely branched; leaves scattered, short-petioled ; leaflets 9-1.5, 

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

 ish above; racemes 2-3 times as long as the leaves, G - 10-flowcred ; lobes 

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

 Nuit. 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 o - 2° long. 



3. T. hispidula, Pui-sh. Hoary-pubescent or smoothish ; stems slender, 

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

 1!), small (4"-6""long),ol)long, 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. ehrysophylla, Pursh. Prostrate, rusty pubescent ; stems diff'usely 

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



