=Cladrástis tinctòria=, Raf. (YELLOW-WOOD.) Leaflets 7 to 11, oval to ovate, 3 to 4 in. long, beautiful light green in color. Flowers 1 in. long, white, not so fragrant as the common Locust, in hanging panicles 10 to 20 in. long; blooming in June. Pods 2 in. long, ripe in August. Wild but rare in Kentucky and south. A beautiful tree, 20 to 50 ft. high, with very smooth grayish bark; rarely cultivated. GENUS =31. ROBÍNIA.= Trees or shrubs with alternate, odd-pinnate leaves, having spines on each side of the stalk in place of stipules. Leafstalk thickened near the base, and covering 2 to 3 buds for the growth of a branch for the next year. An axillary bud also found that may produce a branch the same year as the leaf. Flowers large, pea-blossom-shaped, in large clusters. Fruit a pea-shaped pod. * Branchlets and leafstalks not sticky 1. * Branchlets and leafstalks sticky 2. [Illustration: R. Pseudacácia.] 1. =Robínia Pseudacácia=, L. (COMMON LOCUST.) Leaflets 9 to 19, small, oblong-ovate, entire, thin. Twigs purplish-brown, slender, smooth, not sticky. Flowers white, fragrant, in hanging racemes, 3 to 6 in. long. June. Pods flat, smooth, purplish-brown, ripe in September. An irregularly growing, slender tree, 70 to 80 ft. high, with white or greenish-yellow, very durable wood, and on old trees very rough bark with long, deep furrows. Native; Pennsylvania, west and south, and extensively planted and naturalized throughout. A number of varieties, some of which are thornless, are in cultivation. [Illustration: R. viscòsa.] 2. =Robínia viscòsa=, Vent. (CLAMMY LOCUST.) Leaflets 11 to 25, ovate-oblong, sometimes slightly heart-shaped at base, tipped with a short bristle. Twigs and leafstalks sticky to the touch. Flowers in a short, rather compact, upright raceme, rose-colored and inodorous. A small tree, 30 to 40 ft. high; native south, and has been quite extensively cultivated north. 3. =Robínia híspida=, L. (BRISTLY LOCUST. ROSE-ACACIA.), with bristly leafstalks and branchlets, and large rose-colored flowers, is only a bush. Often cultivated. Wild from Virginia and south. GENUS =32. CÉRCIS.= Small trees or shrubs, with alternate, simple, heart-shaped leaves. Flowers in umbel-like clusters along the branches, appearing before the leaves, and shaped like pea-blossoms. Fruit pea-like pods, remaining on the tree throughout the year. Wood hard, heavy, and beautifully blotched or waved with black, green, and yellow, on a gray ground. [Illustration: C. Canadénsis.] 1. =Cércis Canadénsis=, L. (JUDAS-TREE. REDBUD.) Leaves acutely pointed, smooth, dark green, glossy. Flowers bright red-purple. Pods nearly sessile, 3 to 4 in. long, brown when ripe in August. A small ornamental tree, 10 to 30 ft. high, with smooth bark and hard apple-tree-like wood; wild from Central New York southward, and often cultivated.