186 WOODY PLANTS 



disarticulate but persist into the winter. 



1. B. capreolata L. Crossvlne . Climbing to 20 m. or trail- 

 ing; twigs glabrous except at the nodes; pith in transverse section 

 as a cross; leaflets stalked, 5-15 cm. long, entire; capsule linear, 

 10-17 cm. long. Rich woods, Florida to Louisiana, north to 

 Maryland, West Virginia, Illinois, and Missouri (Fig. 289). 



CATALPA Scop. (Bignoniaceae) 



Small or medium-sized deciduous trees. Twigs thick, round; 

 pith large, round, pale, continuous. Buds solitary, sessile, glo- 

 bose, with about 6 loose scales; terminal bud lacking. Leaf-scars 

 elliptic or round, in whorls, alternately of 2 large scars and 1 

 small scar, then 1 large scar and 2 small scars; stipule-scars 

 none. Pods long, terete, persistent in winter. Seeds winged all 

 around, the wings ciliate at each end. 



a. Capsules about 1. 5 cm. thick; 



hairs of the seeds not coming to 



a point I.e. speciosa 



a. Capsules 0. 8-1. 2 cm. thick; 



hairs of the seeds coming to a 



point 2.C. bignonioides 



1. C. speciosa Warder. Catawba-Tree. Cigar-Tree. Northern 

 Catalpa. A large tree to 30 m. tall, of pyramidal habit; bark red- 

 brown, broken into thick scales; capsule thick; seeds truncate. 

 Damp woods, Tennessee to Texas, north to Indiana and Iowa; culti- 

 vated and naturalized elsewhere (Fig. 290 ). 



2. C. bignonioides Walt. Common Catalpa . A low tree to 

 15 m. high, or taller, with wide -spreading branches forming a 

 broad round head; bark light brown, separating into thin scales; 

 pods slender; seeds pointed. Native of the southern and Gulf states, 

 cultivated and frequently escaped northwards (Fig. 291 ). 



CEPHALANTHUS L. (Rubiaceae) 



Deciduous shrubs. Twigs slender, round, glabrous ; pith small, 

 more or less angled, brown, continuous. Buds solitary, sessile, 

 conical, in depressed areas above the leaf-scars; terminal bud 

 lacking. Leaf-scars in whorls of 3, or opposite, roundish; bundle- 

 trace 1, U-shaped; stipule-scars or persistent stipules connecting 

 the leaf-scars. 



1. C, occidentalis L. Buttonbush. Deciduous shrub to 5 m. 

 tall; twigs reddish and glossy. Swamps and stream-margins. 



