Kermes), the pistachio or terebinth tree, the sumach (Rhus pentaphila), and other species of Rhus which are widely spread.
The lac, when taken from an incision ~ in the trunk of the Rhus vernicifera (urushi-no-ki), contains approximately 70% of lac acid, 4% of gum arabic, 2% of albumen, and 24% of water.
The Chinese galls of commerce (Woo-pei-tsze) are stated to be produced by Aphis Chinensis, Bell, on Rhus semialata, Murr.
Rhus - Sumach.
Among the indigenous trees are the Abies excelsa, Abies microsperma, Pinus sinensis, Pinus pinea, three species of oak, five of maple, lime, birch, juniper, mountain ash, walnut, Spanish chestnut, hazel, willow, hornbeam, hawthorn, plum, pear, peach, Rhus vernicifera, (?) Rhus semipinnata, Acanthopanax ricinifolia, Zelkawa, Thuja orientalis, Elaeagnus, Sophora Japonica, &c. Azaleas and rhododendrons are widely distributed, as well as other flowering shrubs and creepers, Ampelopsis Veitchii being universal.
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