BORRAGINACEAE 



Anacahuita 

 Cordia boissieri A. DC. 



HABIT. An aromatic shrub or small tree 20-25 feet high and 

 6-8 inches in diameter; crown round-topped. 



LEAVES. Alternate; simple; oval to oblong-ovate; 4-5 inches 

 long; entire or obscurely crenulate-serrate; thick and firm; dark 

 green above, woolly below; tardily deciduous. 



FLOWERS. Regular; perfect; in cymes; calyx; corolla funnel- 

 form, 2 inches across, white with yellow spot in throat. 



FRUIT. Drupaceous; ovoid; 1 inch long and % inch broad; 

 acute; lustrous, bright red-brown; enclosed by orange-brown, 

 tomentose calyx; stone thick-walled. 



TWIGS. Stout, dark gray or brown, puberlous, marked by 

 occasional large lenticels and by elevated obcordate leaf-scars. 



BARK. Thin; gray; divided into broad, flat ridges. 



WOOD. Light; rather soft; close-grained; diff"use-porous. 



SILVICAL CHARACTERS. Intolerant; dry limestone ridges 

 and depressions; planted as ornamental. 



BIGNONIACEAE 



Desertwillow^ 

 Chilopsis linearis (Cav.) Sweet (Chilopsis saligna D. Don) 



HABIT. A shrub or small tree rarely 20-30 feet high; trunk 

 usually reclining; crown narrow with slender branches. 



LEAVES. Opposite or scattered; simple; linear or linear- 

 lanceolate; 5-12 inches long and Va-Vz inch wide; acuminate; 

 entire margins; thin; light green; deciduous during winter. 



FLOWERS. Irregular; perfect; showy; in racemes; corolla 

 white, yellow-spotted in throat, V^-lVi inches long. 



FRUIT. Slender, elongated, thin-walled capsule, 7-12 inches 

 long and Va inch thick; splitting into 2 concave valves; persistent 

 into the winter. Seed; numerous; Vs inch long. 



TWIGS. Slender, glabrous or densely tomentose, light brown. 

 Winter buds: terminal absent; lateral minute, scaly. 



BARK. Thin {Yq-Va inch); dark brown; furrowed. 



WOOD. Soft; not strong; close-grained; ring-porous; brown. 



SILVICAL CHARACTERS. Intolerant; short-lived; banks 

 of desert and low mountain water courses. 



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