92 LEGUMINOSiE. (I'LLSE FAMILY.) 



wrinkled, 1 -seeded, indehiscent, included in the calyx. — Perennial usually 

 glandular herbs. Stipules cohering with the petioles. Flowers axillary or ter- 

 minal, purplish or white, racemose or spiked. 



* Leaves 1 - 3-foliolate. 



1. P. virgata, Nutt. Smoothish; stem %'irgate, sparingly branched ; leaves 

 veiy remote, 1- (or the lowest 2-3-) foliolate ; leaflets linear or oblong-linear, 

 obtuse, the lower ones broader and long-petioled ; stipules setaceous ; peduncles 

 much shorter than the leaves ; spikes dense, cylindrical ; bracts ovate, acumi- 

 nate, and, like the cJilyx, glandular and hairy ; corolla violet. — Near St. Mary's, 

 Georgia, and the adjacent parts of Florida. July. — Stem 2° high. Leaflets 

 2' -5' long. 



2. P. melilotoides, Michx. Glandular and sparingly pubescent ; leaves 

 trifoliolate ; leaflets oblong-lanceolate or elliptical ; stipules subulate ; spikes ob- 

 long, on peduncles 2-3 times as long as the leaves; bracts ovate, acuminate, 

 veiny; corolla violet ; legume rugose. — Var. 1. (P. eglandulosa, /!■//.) Gland- 

 less or nearly so ; bracts ovate-lanceolate, and, like the calyx, villous. — Dry soil, 

 Florida to Tennessee, and westward. May and June. — Steni l°-2° high. 

 Leaflets l'-2' long. 



3. P. Onobryehis, Nutt. Pubescent ; leaves trifoliolate ; leaflets ovate, 

 acuminate ; racemes elongated, somewhat sccund ; calyx glandular, the tectli 

 small, obtuse, equal ; legume ovate, muricatc, wrinkled transversely. — Near 

 Spartanburg, South Carolina. June and July. — Stem 3° - 5° high. Leaves 

 very large. 



4. P. canescens, Michx. Hoary -pubescent ; lower leaves trifoliolate, the 

 upper simple, short-potioled ; leaflets obovate, glandular ; racemes longer than 

 the leaves, few-flowered ; calyx inflated ; flowei-s blue, turning greenish ; legume 

 even. — Dry pine barrens, Florida to North Carolina. April and May. — Stem 

 bushy, 2° high. Resembles a Baptisia. 



* * Leaves paJmately H - 7 -Jbliolate. 



5. P. Lupinellus, Michx. Smooth ; stem slender, declining, sparingly 

 branched ; leaflets filiform ; racemes longer than the leaves, loose-flowered ; 

 flowers violet ; legumes rugose. (P. Floridana, Shutll.) — Dry pine barrens, Flor- 

 ida to North Carolina. May and June. — Stem 2° long. Leaflets 2' - 3' long. 



6. P. subacaulis, Torr. & Gray. Nearly stemless ; peduncles, petioles, 

 and calyx wliite with spreading hairs ; leaves 7-foliolate, long-petioled ; leaflets 

 obovate-oblong, smoothish above, fringed on the margins and midrib beneath ; 

 ])eduncles longer than the leaves, rigid ; spikes dense, ovate or oblong ; bracts 

 ovate, acuminate ; calyx-teeth obtuse. — Rocky hills, near Nashville, Tennessee. 

 April and May. — Leaflets 1' long. Peduncles 4' - 6' long. Flowei-s numerous, 



purple. 



* * * Leaves pinnate. 



7. P. multijuga, Ell. Stem branching ; leaflets numerous (9- 10 pairs), 

 oblong-lanceolate, obtuse, pubescent ; spikes oblong ; bracts small, membrana- 

 ceous, without glands. — Abbeville District, South Carolina. — Stem 1 ° - 2° iiigh. 

 Leaflets small. Bracts half as long as the calyx. Flowers violet. 



