. 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. Bustic 775 gravity is about It is valued for marine construction on account of its im- munity from the attacks of the Teredo; also used in ship and boat building. The genus contains about 75 species of trees or shrubs of tropical regions. The South African S. inerme Lirmaeus, is the type. The fruit of an African species, Sideroxylum dulcificum A. de CandoUe, the Miraculous berry, is edible. An inferior Gutta percha


. 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. Bustic 775 gravity is about It is valued for marine construction on account of its im- munity from the attacks of the Teredo; also used in ship and boat building. The genus contains about 75 species of trees or shrubs of tropical regions. The South African S. inerme Lirmaeus, is the type. The fruit of an African species, Sideroxylum dulcificum A. de CandoUe, the Miraculous berry, is edible. An inferior Gutta percha is obtained from Sideroxylum attenuatum A. de CandoUe of the PhiUppine islands. The name is Greek, in reference to the very hard wood of these trees. III. BUSTIC GENUS DIPHOLIS A. de CANDOLLE Species Dipholis salicifolia (Linnaeus) A. de CandoUe Achras salicifolia lannaeus ?N evergreen tree of the hammocks of peninsular Florida and the Keys, also occurring on the Bahamas and most of the other West Indies and in tropical Mexico. Its maximum height is about 16 meters, with a trunk diameter of 5 dm. It is also called Cassada. The trunk is straight, its branches slender and ascending, forming a round- headed tree when growing in the open. The bark is about 8 mm. thick, broken into thick, scaly plates of a reddish gray color. The slender twigs are rusty hairy, soon becoming quite smooth, gray or light reddish brown, and bear many small raised leaf scars. The leaves are persistent, al- ternate, thin, leathery, oblong to eUiptic or elliptic-oblanceolate, 6 to 12 cm. long, usually sharp-pointed, gradually tapering at the base to a long, slender stalk; they have some shining, brownish hairs when un- folding, soon becoming smooth, dark green and shining above, dull green and usually smooth beneath. The small flowers appear from February to May, in many dense axillary or lateral clusters on stout, club-shaped stalks 2 to 3 mm. long; the calyx is bell- shaped, reddish silky-hairy, the 5 se


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