94 TREES OF THE NORTHERN UNITED STATES 



larly 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 va- 

 rieties, some of which are thornless, are in cultivation. 



2. Bobinia viscosa, Vent. (CLAM- 

 MY 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. Bobinia hispida, L. (BRISTLY 

 LOCUST. ROSE-ACACIA), with bristly 



B. viso6sa. leafstalks and branchlets, and large 



rose-colored flowers, is only a bush. Often cultivated. Wild from 

 Virginia and south. 



GENUS 32. ClSBCIS. 



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. 



1. C6rcis Canad6nsis, 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 south- 

 ward, and often cultivated. 



2. C6rcis siliquastrum (EUROPEAN JUDAS-TREE), from Europe, 

 with obtusely pointed, somewhat kidney-shaped leaves, and white to 

 purple flowers, is sometimes cultivated. It is not so tall or tree-like 

 as the American species. 



