. 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. 568 The Prickly Ashes I. THE PRICKLY ASHES GENUS XANTHOXTLUM LINN^US Mm «g^-s|ANTHOXYLUM (Greek, Yellow wood) includes not fewer than I^^Hbj 140 species, all woody plants and many of them trees, widely dis- tributed in tropical regions, a few in the temperate zones; the type is Xanthoxylum Clava-Herculis Linnaeus. Their fohage is aromatic and the bark is usually armed with spines supported on conic cushions of cork. The l
. 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. 568 The Prickly Ashes I. THE PRICKLY ASHES GENUS XANTHOXTLUM LINN^US Mm «g^-s|ANTHOXYLUM (Greek, Yellow wood) includes not fewer than I^^Hbj 140 species, all woody plants and many of them trees, widely dis- tributed in tropical regions, a few in the temperate zones; the type is Xanthoxylum Clava-Herculis Linnaeus. Their fohage is aromatic and the bark is usually armed with spines supported on conic cushions of cork. The leaves are alternate and pinnately compound in all our species. The flower-clus- ters are either terminal or axillary and the flowers perfect or usually imperfect; they have 4 or 5 sepals, petals and stamens, and the pistil is composed of from i to 4 carpels, more or less united, which ripen into capsules each containing one seed. Flower-clusters small, dense, axillary. Flower-clusters large, terminal. Leaves unequally pinnate, dull. Not prickly; leaves persistent. Very prickly; leaves deciduous. Leaves equally pinnate, shining. 1. X. Fagara. 2. X. flavum. 3. X. Clava-Herculis. 4. X. coriaceum. I. WILD LIME —Xanthoxylum Fagara (Linnaeus) Sargent Schinus Fagara Linnaeus. Fagara Fagara Small Usually a shrub, the Wild lime, occa- sionally forms a tree about 10 meters high. It grows plentifully in southern Florida, along the Gulf coast in Texas, is very abundant throughout the Bahamas and oc- curs also through the West Indies to Cen- tral and South America, being one of the most widely distributed of tropical woody plants. The bark is gray and thin and bears corky projections cm. high or less; the branches are usually plentifully armed with hooked prickles, making passage through thickets usually impossible without cutting one's way, though the plant is occa- sionally nearly or quite unarmed; the twigs are smooth, gray-brown, often some- what zigzag. The evergreen leaves are
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