104 LEGUMIXOS^E. (PULSE FAMILY.) 



many-seeded. Perennial herbs, with unequally pinnate leaves, with the 

 leaflets opposite mucronate and straight-veined, and white flowers, turning 

 purplish. 



* Flowers single or by pairs in the axils of the leaves ; the uppermost often 

 crowded in a dense raceme. 



1. T. Virginiana, Pers. (GOAT'S RUE.) Soft-hairy and somewhat 

 hoary or smoothish ; stems very leafy, clustered, erect, simple ; leaflets 1 1 

 25, oblong or linear-oblong, acute or obtuse, smoothish above ; flowers yellow- 

 ish white tinged with purple. Dry soil. June -July. Stems 1 - 2 high, 

 from long and slender roots. Flowers showy. 



* * Flowers in long-ped uncled 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 -15, 

 oval or cuueate-obloug, rounded and strongly mucronate at the apex, smooth- 

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

 of the calyx linear-subulate ; flowers large. Varies with linear, acute, and 

 reflexed leaflets, the odd one elongated. Dry soil, Florida to North Carolina, 

 and westward. June - July. Steins 1- 2 long. 



3. T. hispidula, Pursh. Hirsute ; stems slender, terete, erect or pro- 

 cumbent; petiole shorter than the lowest leaflets; leaflets 11-15 (4" -8" 

 long), oblong, acute or obtuse ; peduncles slender, terete, common] v longer 

 than the leaves, 2-4-flowered. Dry sandy soil, Florida to North Carolina, 

 and westward. June -July. Stems 6' - 18' long. Legume slightly hispid. 



4. T. Chrysophylla, Pursh. Prostrate, rusty-pubescent ; stems dif- 

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

 (yellowish) 5-7, cuneate-obovate, obtuse or emarginate, smooth above; 

 peduncles longer than the leaves, terete, 2 - 3-flowered ; calyx teeth short, 

 acute. Varies with smaller (^' - 1' long) leaves and flowers, the latter mostly 

 solitary on the short peduncles. Dry pine barrens, Florida, Georgia, and 

 westward. Steins 6'- 18' long. 



5. T. ambigua, M. A. Curtis. Hoary-pubescent, or nearly smooth ; 

 stems decumbent, angled ; leaves scattered, long petioled (5' -6' long); leaf- 

 lets 7-15, distant, wedge-oblong, truncate or emarginate at the apex, paler 

 and often smooth above, purplish and strongly veined beneath ; peduncles 

 flattened, equalling or exceeding the leaves, few-flowered ; calyx teeth short, 

 acute. Dry sandy soil, Florida to North Carolina. June- July. 



6. T. onobrychoides, Xutt. Softly pubescent; stem erect, mostly 

 simple; leaves petioled; leaflets numerous, narrowly oblong, truncate or 

 emarginate at the apex, mucronate, soon smooth above ; racemes very long, 

 erect, many-flowered; legume nearly straight. Pine barrens near Mobile 

 (Mohr), and westward. Stem 2 high. Leaflets 1' long. Racemes l-2 

 long. 



7. T. leptostachya, DC. Stem erect, branching, slightly pubescent ; 

 leaflets 12 - 14, wedge oblong, when young silky beneath; stipules subulate; 



