. North American trees : being descriptions and illustrations of the trees growing independently of cultivation in North America, north of Mexico and the West Indies . Trees. Lead Tree 527 are evenly bipinnate, i to 2 dm. long, including the slender leaf-stalk, which is provided with a gland at the top or about midway from the base; there are 10 to 20 pairs of pinnae, 3 to 5 cm. long and short- stalked; the leaflets, 15 to 30 pairs, are closely placed, hnear, about 5 mm. long, bluntly pointed, obUque, and nearly or quite sessile, somewhat hairy at first, becoming pale, light green and smooth.
. North American trees : being descriptions and illustrations of the trees growing independently of cultivation in North America, north of Mexico and the West Indies . Trees. Lead Tree 527 are evenly bipinnate, i to 2 dm. long, including the slender leaf-stalk, which is provided with a gland at the top or about midway from the base; there are 10 to 20 pairs of pinnae, 3 to 5 cm. long and short- stalked; the leaflets, 15 to 30 pairs, are closely placed, hnear, about 5 mm. long, bluntly pointed, obUque, and nearly or quite sessile, somewhat hairy at first, becoming pale, light green and smooth. The flowers appear during spring and summer on the new growth in axillary clusters of 2 to 4, long-stalked, globose heads cm. in di- ameter, which are woolly before the flowers open; the bell-shaped calyx is i to mm. long, obtusely s-lobed and sUghtly hairy; petals about three times the length of the calyx, linear-spatulate, and sharp-pointed; the 10 stamens are scarcely twice the length of the petals; ovary nearly sessile and haiiy. The fruit is flat, linear, often variable in length in the same cluster, from i to 2 dm. long, about 2 cm. wide, usually 2 or 3 in a cluster on a thickened stalk, rounded and tipped by a short point, tapering obliquely at the short-stalked base, brown and shining, splitting into thin leathery valves, 16 to 28 seeded; seeds obovate, 7 mm. long, dark brown and shining. The wood is hard, close-grained, dark brown, with yellowish sapwood; its spe- cific gravity is about It is occasionally sawed into lumber and apphed to ordinary local uses. Its rapid growth, profusion of flowers, and beautiful feathery foliage recom- mend it as an ornamental and shade tree for the southern portion of our area. It is also called the Chalky Fig. 4S7. — Mexican Lead Tree. 2. LEAD TREE — Leucsena glauca (Linnasus) Bentham Mimosa glauca Linnjeus A shrub, rarely becoming a slender tree 10 meters tall, with a trunk diameter of I dm. It occurs in s
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