yO LKGUMINOSJS. ( PULSE FAMILY.) 



stipules linear-subulate, elongated, adnate below to the petioles ; racemes erect, 

 densely many-flowered ; flowers pale red, the vexillum dark purple in the 

 centre ; legume very woolly. Dry sandy barrens, Florida to North Carolina. 

 April. Stems l-2 long. Leaves (with the petiole) 6' -8' long. 



3. L. dilfusus, Nutt. Perennial ; silky-tomentose and hoary ; stems pros- 

 trate or erect, much branched ; leaves simple, oblong or obovate, obtuse, short- 

 petioled ; stipules short, often wanting on the branches ; racemes many-flowered ; 

 flowers blue, the vexillum dark purple in the centre; legume woolly. Dry 

 sand-ridges, Florida to North Carolina. April and May. Stems 1- 2 high. 

 Leaves 2' -4' long. 



3. MEDICAGO, L. 



Calyx 5-clcft ; the lobes subulate or setaceous. Corolla deciduous. Vexillum 

 longer than the partly united wings and keel. Stamens 10, diadelphous (9 & 

 1), equal. Style smooth. Legume falcate or coiled, 1 -many-seeded. Herbs 

 or shrubs. Leaves trifoliolatc. Stipules adnate to the petioles, mostly incised. 

 Flowers yellow, in axillary spikes. 



1. M. lupulina, L. Pubescent; stem procumbent ; leaflets obovate, 

 toothed ; stipules nearly entire ; spikes globose, many-flowered ; flowers mi- 

 nute ; legumes reniform, 1-seeded, black. Waste places, Florida and north- 

 ward. Introduced. Stem l-2 long. 



4. MELILOTUS, Tourn. MELILOT. SWEET CLOVER. 



Calyx 5-toothed ; the teeth long and equal. Corolla deciduous. Wings and 

 keel cohering. Stamens diadelphous (9 & 1). Legume ovoid, coriaceous, 

 veiny or rugose, longer than the calyx, 1-4-seeded, scarcely dehiscent. 

 Smooth herbs. Leaves trifoliolate. Leaflets often toothed. Stipules adnate to 

 the petioles. Flowers yellow or white, in axillary racemes. 



1. M. officinalis, Willd. Stem erect, branching ; leaflets ohovate-oblong, 

 toothed ; flowers yellow; A-cxillum striped with brown, as long as the keel and 

 wings ; legume obovate, rugose. Cultivated ground. Introduced. and (f) 

 Stems l-3 high. Legumes drooping, 2-sccdcd. 



'2. M. alba, Lam. Stem erect, branching; leaflets oblong, truncate, ser- 

 rate; racemes elongated ; flowers white ; vcxillum longer than the wings and keel ; 

 legumes ovate, rugose, 1 -seeded. (M. leucantha, Koch.) Cultivated grounds. 

 Introduced. Q Legumes drooping. 



5. TRIFOLIUM, L. CLOVKK. 



Calyx 5-cleft ; the teeth subulate or setaceous. Corolla withering or persist- 

 ent ; the keel shorter than the wings, and united with them by their claws. Sta- 

 mens diadelphous (9 & 1). Legume smooth, membranaceous, 1 -6-seeded, often 

 shorter than the calyx, scarcely dehiscent. Tufted or diffuse herbs. Leaves 

 trifoliolatc, the leaflets mostly toothed. Stipules adnate to the petioles. Flow- 

 ers (in our species) capitate. 



