142 LEGUMINOS^. (pulse FAMILY.) 



on elongated peduncles ; pod (at maturity) oblong-ovate, pubescent, nearly 3" 

 long, hardly shorter than the calyx. (L. hirta. Ell.) — Dry hills, common. 



6. L. capitata, Michx. Stems rigid, woolly ; petioles very short; leaflets 

 oblong to narroioly oblong, thickish, reticulated and mostly smooth above, silky 

 or sometimes downy beneath ; heads of Jloicers globular, on peduncles shorter 

 than the leaves; pod oblong-ovate, pubescent, much shorter than the calyx. — Dry 

 and sandy soil, N. Eng. to Fla., west to Minn., Mo., and La. 



7. L. angUStifolia, Ell. Like tlie last, but mosth- appressed-silky, the 

 leajlets linear, the smaller often oblong heads on distinct and sometimes -slender 

 peduncles, the pod round-ovate, acutish, 1^-2" long, hardly shorter than the 

 calyx. (L. capitata^ var. augustifolia, Pursh.) — N. J. to Fla., west to Mich., 

 Iowa, and La. 



8. L. leptostachya, Gray. Clothed with appressed silky pubescence; 

 stems often branched, slender; leajlets linear to narrowly oblong; spikes slen- 

 der, somewhat looseiy-Jlowered, on peduncles as long as the leaves; pod ovate, 

 small {\\" long), about equalling the calyx, densely pubescent. — 111., Iowa, 

 and Minn. 



§ 2. Stipules and bracts broad and scarious ; calyx-loles broad ; annual. 



L. STRIATA, Hook. & Arn. Diffusely branched, decum})ent, subpubescent; 

 petioles very short ; leaflets oblong-obovate, 6" long or less ; peduncles very 

 short, 1 -5-tlowered; pod small, little exceeding tlie calyx. — Common in the 

 Southern States, extending into Mo. (Nat. from E. Asia.) 



29. STYLOSANTHES, Swartz. 



Calyx early deciduous; tube slender aud stalk-like; limb unequally 4-5- 

 cleft, the lower lobe more distinct. Corolla and monadelphous stamens in- 

 serted at the summit of the calyx-tube; standard orbicular; keel incurved. 

 Anthers 10, the 5 longer ones fixed near their base, and the 5 alternate shorter 

 ones fixed by the middle. Style filiform, its upper part falling off after flower- 

 ing, the lower part incurved or hooked, persistent on the 1 -2-jointed small and 

 short reticulated pod; the lower joint when present empty and stalk-like. — 

 Low perennials, branched from the base, with wiry stems, pinnately 3-foliolate 

 leaves, the sheathing stipules united to the petiole, no stipels, and small, yellow 

 flowers in terminal heads or short spikes. (Name composed of arvKos, a col- 

 umn, and &v9os, a flower, from the stalk-like calyx-tube.) 



1. S. elatior, Swartz. Tufted; leaflets lanceolate, strongly straight- 

 veined; heads or clusters small and few-flowered. — Pine barrens, Long Island 

 and N. J. to Fla., west to S. Ind., Kan., aud Ark. 



30. VI CIA, Tourn. Vetch. Tare. 



Calyx 5-cleft or .5-toothed, the 2 upper teeth often shorter, or the lowest 

 longer. Wings of the corolla adhering to the middle of the keel. Stamens 

 more or less diadelphous (9 and 1 ) ; the orifice of the tube oblique. Style fili- 

 form, hairy all round or only on tlie back at the apex. Pod flat, 2-valved, 2 - 

 several-seeded. Seeds globular. Cotyledons very thick, remaining under 

 ground in germination. — Herbs, mostly climbing more or less by the tendril 

 at the end of the pinnate leaves. Stipules half-sagittate. Flowers or pedun- 

 cles axillary. (The classical Latin name.) 



