LEGUMINOSJ2. (PULSE FAMILY.) 101 



roundisli, ciliate ; calyx villous ; petals white, obtuse ; style and ovary 

 bearded. Dry pine barrens in the middle aud lower districts. Sept. - Oct. 

 - Stem 2 high. 



Var. trifoliatus. Glandless, or nearly so; leaflets mostly 3, filiform; 

 bracts 3-4, broadly ovate, acute; style bearded below the middle; petals 

 acute. With the preceding. 



2. Lower bracts not involucrute, nor empty : calyx teeth shorter than the tube : 



sjn'/ces single, terminal. 



* Petals white or flesh-colored. 



2. P. gracilis, Nutt. Stems decumbent, virgate ; leaflets 5-7, oblong- 

 linear, obtuse ; spikes oval, becoming cylindrical in fruit, peduucled ; vexillum 

 obovate. Low pine barrens, Florida, and westward. August. Stems 2 

 long. Leaflets ' long. 



3. P. carneus, Michx. Stems erect, much branched, very leafy; leaf- 

 lets 5 - 7, linear, acute; spikes oblong, long-peduncled ; calyx as long as the 

 subulate bracts; vexillum oblong. Dry sandy soil, Florida and Georgia, 

 westward. Stems 2 -3 high. Flowers white or reddish. 



4 P. candidus, Michx. Stem rigidly erect; leaflets 5 -9, lanceolate, 

 obtuse ; spikes cylindrical in fruit ; calyx sulcate, half as long as the setaceous- 

 pointed bracts, the teeth acute; vexillum "broadly cordate." West Tennes- 

 see, and westward. August - Sept. 



5. P. multiflorus, Nutt. ? Glabrous ; stem corymbose-branched ; leaf- 

 lets 3-5, filiform ; heads numerous, globose; calyx smooth, longer than the 

 subulate bracts, the short teetli obtuse ; legume partly exserted. St. Peters- 

 burg, Florida (G. L. Browne/I). Stem 2 high. Leaflets 3" -4" long. 



Heads 3" wide. 



* * Petals jiurjtle or rose-color. 



6. P. violaceus, Michx. Stem erect, corymbose above, very leafy; 

 leaflets 3 - 5, narrow-linear ; spikes oblong or cylindrical ; calyx silky, the 

 short teeth obtuse, as long as the lanceolate acuminate silky bracts. West 

 Tennessee, and westward. Stem 2 high. Flowers violet-purple. 



7. P. roSGUS, Xutt. Leaflets narrower ; calyx smooth, the teeth as long 

 as the tube, shorter than the setaceous bracts ; petals obovate, rose color ; 

 otherwise like the preceding. Low pine barrens, East Florida. 



8. P. folioSUS, Gray. Smooth, very leafy ; leaflets 16-29, linear-oblong, 

 mucronate, the glands few and small; spikes cylindrical, short-peduncled ; 

 bracts slender-awned from a lanceolate base, exceeding the rose purple flow- 

 ers ; calyx glabrous, the teeth about half the length of the cyliudraceous 

 tube (Gnii/). Near Nashville, Tennessee. 



9. P. decumbens, Nutt. Stems decumbent, branching from the base ; 

 leaflets 6 or 8, linear-oblong, mucronate; spikes ovate-oblong; calyx shorter 

 than the acuminate bracts, the teeth longer than the smooth tube; petals 

 deep violet-purple, linear-oblong, obtuse at the base, vexillum cordate. - 

 Northern Alabama, Tennessee, and westward. Stems 1 long. Leaflets 



6" -8" long. 



