4. L. palústris, L. _Slender_, glabrous or somewhat pubescent; stem often winged; stipules lanceolate, sharp-pointed at both ends; _leaflets 2--4 pairs, narrowly oblong to linear, acute_ (1--2´ long); _peduncles 2--6-flowered_; flowers 6´´ long.--Moist places, N. Scotia to N. J., and westward across the continent. (Eu.) Var. myrtifòlius, Gray. Stipules usually broader and larger; leaflets ovate to oblong (1´ long or less).--Same range, and extending south to N. C. [+][+] _Flowers yellow; leaflets a single pair._ L. PRATÈNSIS, L. Low and straggling; leaflets narrowly lanceolate to linear, acute; peduncles several-flowered.--Spontaneous in Mass., N. Y., and Ont. (Nat. from Eu.) [*][*][*] _Tendrils usually wanting; low, mostly erect; stipules semi-sagittate; flowers very large, purple; pod stipitate in the calyx._ 5. L. polymórphus, Nutt. Leaflets 3--6 pairs, narrowly oblong to linear, thick and strongly nerved, 1--2´ long; seeds with a narrow footstalk and short hilum.--Mo., Kan., and westward. 6. L. ornàtus, Nutt. Like the last, but leaflets always narrow, 3--12´´ long; seeds with a very broad footstalk and long hilum.--Kan. to Col. and Dak. Scarcely 1° high. 32. ÁPIOS, Boerhaave. GROUND-NUT. WILD BEAN. Calyx somewhat 2-lipped, the 2 lateral teeth being nearly obsolete, the upper very short, the lower one longest. Standard very broad, reflexed; the long scythe-shaped keel strongly incurved, at length coiled. Stamens diadelphous. Pod straight or slightly curved, linear, elongated, thickish, many-seeded.--A perennial herb (with some milky juice!), twining and climbing over bushes, and bearing edible tubers on underground shoots. Leaflets 3--7, ovate-lanceolate, obscurely stipellate. Flowers in dense and short, often branching racemes. (Name from ἄπιον, _a pear_, from the shape of the tubers.) 1. A. tuberòsa, Moench. Flowers brown-purple or chocolate-color, violet-scented.--Low grounds, N. Brunswick to Fla., west to Minn., Kan., and La. 33. PHASÈOLUS, Tourn. KIDNEY BEAN. Calyx 5-toothed or 5-cleft, the two upper teeth often higher united. Keel of the corolla, with the included stamens and style, spirally coiled. Stamens diadelphous. Style bearded along the upper side; stigma oblique or lateral. Pod scythe-shaped, several--many-seeded, tipped with the hardened base of the style. Seeds round-reniform, with very short hilum. Cotyledons thick and fleshy, rising out of the ground nearly unchanged in germination.--Twining herbs, with pinnately 3-foliolate stipellate leaves. Flowers racemose, produced in summer and autumn. (The ancient name of the Kidney Bean.) 1. P. perénnis, Walt. (WILD BEAN.) Stem climbing high from a perennial root; leaflets roundish-ovate, short-pointed; flowers purple, handsome, but small; pods drooping, strongly curved, 4--5-seeded.--Copses, N. Eng. to Fla., west to Minn. and La. 34. STROPHOSTỲLES, Ell.