LEGUMINOSAE, the Pulse Family Trees, shrubs, or herbs, with alternate compound (except 3 species with simple) leaves and stipules; flowers usually irregular (except in a few species), with a large upper petal and 4 smaller ones, the 2 lower enclosing the stamens and pistil; stamens almost always 10, and generally united by their filaments; pistil 1, simple, ripening into a pod. 1a. Shrubs or trees --2. 1b. Herbs, twining, but without tendrils --9. 1c. Herbs; the leaves, or some of them, tipped with tendrils --12. 1d. Herbs, not climbing or twining; tendrils none --21. 2a. Leaves simple --3. 2b. Leaves compound --4. 3a. Leaves broadly cordate (tall shrub or small tree; flowers pink, early spring) =Redbud, Cercis canadensis.= 3b. Leaves lanceolate or elliptical (3-6 dm. high; flowers yellow, summer) =Dyer's Greenweed, Genista tinctoria.= 4a. Twigs or branches thorny --5. 4b. Thorns none --7. 5a. Thorns branched, scattered on the stem (tall tree; flowers greenish, early summer) =Honey Locust, Gleditsia triacanthos.= 5b. Thorns unbranched, a pair of them at the base of each leaf (late spring) --6. 6a. Branches glabrous or nearly so (tree; flowers white) =Black Locust, Robinia pseudo-acacia.= 6b. Branches glandular-pubescent (tall shrub; flowers pinkish) =Clammy Locust, Robinia viscosa.= 6c. Branches bristly (shrub. 1-3 m. high; flowers pink) =Bristly Locust, Robinia hispida.= 7a. Trees; leaves 2-3-pinnate (flowers greenish-white, spring) =Kentucky Coffee-tree, Gymnocladus dioica.= 7b. Low shrubs; leaves once-pinnate (3-6 dm. high; summer) --8. 8a. Flowers bright-blue, each with a single petal =Lead Plant, Amorpha canescens.= 8b. Flowers yellowish and pink-purple, petals 5 --26a. 9a. Leaflets 5-7; flowers in racemes (purplish, late summer) =Wild Bean, Apios tuberosa.= 9b. Leaflets 3 (flowers greenish, purple, or white, late summer) --10. 10a. Flowers in small capitate clusters; lower 2 petals strongly incurved =Wild Bean, Strophostyles helvola.= 10b. Flowers in racemes (Hog Peanut) --11. 11a. Stem pubescent or glabrate; leaflets seldom more than 5 cm. long =Hog Peanut, Amphicarpa monoica.= 11b. Stem villous with retrorse hairs; leaflets usually longer than 5 cm. =Hog Peanut, Amphicarpa pitcheri.=