LBGDMIKOSJS. ( PULSE FA.MIL Y.) 95 



12. WISTARIA, Nutt. 

 Calyx campanulate, somewhat 2-lippcd ; the upper lip broad, 2-cleft, the lower 

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

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

 length 2-valvcd. — Twining shrubs,^vith unequally 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; racemes on short 

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

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

 1 ' long. 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, roundish, spread- 

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

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

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

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

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



* Flowers single or by j>airs in the arils of the leaves; lite uppermost often crowded in 



a dense raceme. 



1. T. Virginian a, 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-petiolcd ; 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, G - 10-flowercd ; lobes 

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

 Nntt. 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, Pnrsh. Hoary -pubescent or smoothish ; stems slender, 

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

 15, 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 diffusely 

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



