BIGNONIACEAE 



Northern Catalpa. Hardy Gatalpa 



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Catalpa speciosa Warder 



HABIT. A medium-sized tree 30-60 feet higli and 1-3 feet 

 in diameter (max. 120 by 6 feet); broad, rounded crown. 



LEAVES. Opposite or whorled; simple; deciduous; 8-12 

 inches long; heart-shaped; entire; thick; dark green above, paler 

 and hairy below; petioles long, stout, round. 



FLOWERS. 2-lipped; perfect; showy; in open few-flowered 

 panicles; calyx hairy; corolla white with inconspicuous yellow 

 spots, 2 J/2 inches across; appearing after the leaves. 



FRUIT. A long, round, 2-celled, thick-walled capsule 8-20 

 inches long and Yz inch thick; persistent through winter. Seed: 

 numerous, flattened, with rounded, fringed wings 1 inch long. 



TWIGS. Very stout; brown; glabrous; orbicular leaf scar. 

 Winter buds; terminal absent; lateral small, immersed in bark. 



BARK. Rather thin; brown; broken into thick scales. 



WOOD. Light; soft; weak; brown; durable; ring-porous; 

 used for posts. 



SILVICAL CHARACTERS. Intolerant; varied sites; fast 

 growth; taproot; widely planted and naturalized through all 

 but coldest portions of United States. 



Southern Catalpa 

 Catalpa bignonioides Walt. 



This smaller and more southern tree, while native from Florida 

 to Louisiana, has been naturalized as far north as New York. 

 It is less hardy in cold sites than northern catalpa and is dis- 

 tinguished from it by having flowers 1 Yz inches across in many- 

 flowered, crowded panicles with glabrous calyx and corolla with 

 many conspicuous yellow spots and by a thinner-walled fruit 

 about y^-Yi inch in diameter. 



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Paulownia 

 Paulownia tomentosa (Thunb.) Sieb & Zucc. 

 This beautiful Chinese species has been widely cultivated in 

 the eastern states and has become naturalized from New York 

 to Georgia. In cold sites it winter-kills badly. It is characterized 

 by opposite, heart-shaped, simple, deciduous leaves with entire 

 margins, 5-8 inches long, and densely hairy on the lower surface; 

 by perfect, 2-lipped, showy, purple flowers lVi-2 inches long, 

 which appear before the leaves; and by a leathery, ovoid, beaked, 

 brown capsule 1-2 inches long. 



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