LEGUMINOS^=;. (PULSK FAMILY.) 95 



12. WISTARIA, Nutt. 



Calyx campanulatc, somcwliiit ^-lijiped ; tlic upper lip broad, 2-clcft, the lower 

 3-clcft. Vexillum large, with 2 parallel ridges at the base. Stamens diadelplious 

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

 length 2-valvcd. — Twining shrubs, with unequally pinnate leaves, and showy 

 purple flowers, in a crowded raceme. 



1. W. fl'Utescens, DC. Young leaves and branches silky-puliescent ; 

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

 branches, dense-flowered. (Thyrsanthus frutescens, Ell.) — 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, Pcrs. 



Calyx nearly equally .5-cleft or ."i-tootlied. Vexillum large, roundish, spread- 

 ing or reflexcd, usually white within, and reddish or purple and silky witliout; 

 keel obtuse, cohering with the wings. Stamens mouade]i)lK)us or diadelplious. 

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

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

 natc and straight-veined, and white or ])urplish flowers. 



* Flowers siiKjle or hj pairs in the arils of lite leaves ; the vppermost often croicded in 



a dense raceme. 



1. T. Virginiana, Pcrs. (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 Alississippi, and northward. June 

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



* * Flowers in loncj-pcdunchd racemes opposite the leaves : vexillum pubescent 



cxternalli/. 



2. T. spicata, Ton-. & Gray. Hirsute or villous with nisty hairs ; stems 

 simple or diffusely branched; leaves scattered, short-petioled ; leaflets 9-15, 

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

 ish above ; racemes 2-3 times as long as the leaves, C - 1 0-flowered ; lobes 

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

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

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

 June and July. — Stems 1° -2° long. 



3. T. hispidula, Pursh. Hoary-pubescent or smoothi.sh ; stems slender, 

 terete, erect or jjiocumbcnt ; petiole shorter than the lowest leaflets ; leaflets 11 - 

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

 slender, terete, commonly longer than the leaves, 2 - 4-flowere(l ; flowers small, 

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

 July. — Stems 6' - 1 8' long. 



4. T. chrysophylla, Pursh. Prostrate, rusty pubescent ; stems diflTusely 

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



