100 LEGUMINOSJE. (PULSE FAMILY.) 



ovate, acuminate, and, like the calyx, 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 

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

 nate, veiny; corolla violet; legume rugose. Var. (P. eglandulosa, Ell.) 

 Glamlless or nearly so ; bracts ovate-lanceolate, and, like the calyx, villous. 

 Dry soil, Florida to Teunessee ( and westward. May- June. Stem l-2 

 high. Leaflets 1'- 2' long. 



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

 acuminate; racemes elongated, somewhat seenud ; calyx glandular, the teeth 

 small, obtuse, equal ; legume ovate, muricate, wrinkled transversely. Near 

 Spartanburg, South Carolina. June - July. Stem 3 - 5 high. Leaves very 

 large. 



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

 the upper simple, short-petioled ; leaflets obovate, glandular ; racemes longer 

 than the leaves, few-flowered; calyx inflated; flowers blue, turning greenish; 

 legume even. Dry pine barrens, Florida to North Carolina. April - May. 

 Stem bushy, 2 high. Resembles a Baptisia. 



* * Leaves palmately 5-7-foliolate. 



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

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

 flowers violet ; legumes rugose. Dry pine barrens, Florida to North Caro- 

 lina. May- June. Stem 2 long. Leaflets 2'-3' long. 



G P. subacaulis, Trr. & Gray. Nearly stemless ; white with spread- 

 ing hairs ; leaflets obovate-oblong ; peduncles longer than the leaves, rigid ; 

 spikes dense, ovate or oblong. Rocky hills near Nashville, Tennessee. 

 April- May Leaflets 1' long. Peduncles 4' -6' long. Flowers purple. 



* * * Leaves pinnate. 



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

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

 ceous, without glands. Abbeville District, South Carolina. Stem l-2 

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



8. PETALOSTEMON", Michx. 



Calyx nearly equally 5-toothed or 5-cleft. Petals almost regular, on fili- 

 form claws, four of them united with the tube of stamens, the fifth free, cor- 

 date or oblong, folded. Stamens 5, united into a cleft tube. Ovary 2-ovuled. 

 Legume indehi scent, 1 -seeded, included in the calyx. Perennial glandular 

 herbs, with unequally pinnate leaves, and white or purple flowers in terminal 

 spikes or heads. 



1. Lower brac/s involucrate, empty: calyx teeth setaceous, plumose : heads 



globular, corymbed. 



1. P. corymbosus, Michx. Glandular; stems erect, clustered, very 

 leafy; leaflets 5- 15, cuueate-oblone. obtuse, 3" -4" long; bracts 9 or more, 



