RUBIACEAE 



Common Buttonbush 

 Cephalanthus occidentalis L. 



HABIT. A shrub or rarely a small tree up to 50 feet high and 

 1-2 inches in diameter; open, spreading crown. 



LEAVES. Opposite or whorled in 3's; simple; ovate, lanceo- 

 late, or elliptic; 2-7 inches long; acute or acuminate at apex; 

 margins entire; thin; dark green and glabrous above; paler 

 belov^, with yellow midrib; tardily deciduous during winter; 

 petioles stout, grooved, glabrous, Vi-% inch long. 



FLOWERS. Regular; perfect; minute; in dense, globose 

 heads 1-1 J/2 inches in diameter; fragrant; calyx tube 4-5-lobed; 

 corolla cream-white, salver-form, 4-5 lobed; stamens as many 

 as and alternate with corolla lobes; ovary inferior, 2-celled, with 

 protruding, threadlike style and capitate stigma. 



FRUIT. Nutlike capsule; inversely pyramidal; splitting from 

 base upwards into 2-4 closed, 1 -seeded portions; in heads %-% 

 inch in diameter; green tinged with red, becoming dark red- 

 brown. Seed: small, oblong, pendulous. 



TWIGS. Stout; glabrous; thick pith; marked by large lenticels; 

 opposite or in whorls of 3 ; light green at first, becoming red-brown. 

 Winter buds: terminal absent; lateral minute, nearly immersed 

 in the bark. 



BARK. Thin; dark brown to nearly black; with broad, flat, 

 superficially scaly ridges; contains tannin. 



WOOD. Moderately heavy and hard; fine-grained; diffuse- 

 porous; light red-brown; unimportant. 



SILVICAL CHARACTERS. Rather tolerant; reproduction 

 abundant; on moist sites or in dry stream beds; often forming 

 dense thickets. 



BIGNONIACEAE 



Trumpetflower 

 Tecoma stans (L.) H. B. K. 



A shrub or small tree extending through Mexico into the 

 southern parts of Texas, New Mexico, and Arizona. Character- 

 ized by showy, bright yellow flowers; opposite, pinnately com- 

 pound leaves with 5-13 leaflets; and a linear capsule, 4—8 inches 

 long. 



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