The drug plants of Illinois drugplantsofilli44teho Year: 1951 Tehon THE DRUG PLANTS OF ILLINOIS 91 POPULUS GANDIGANS Ait. Balm of Gilead. Salicaceae. The buds are collected. Planted oc- casionally as an ornamental tree. Contains an aromatic, volatile oil, a balsamic resin, and salicin. Used as a tonic, stimulant, and expectorant; used formerly in ointments to prevent their becoming rancid. POPULUS TREMULOIDES Michx. Trembling aspen, aspen, white poplar. Salicaceae.—A small, open, round-topped tree with slender branches drooping at the tips, 30 to 60 feet tall; bark of the trunk black, fissur
The drug plants of Illinois drugplantsofilli44teho Year: 1951 Tehon THE DRUG PLANTS OF ILLINOIS 91 POPULUS GANDIGANS Ait. Balm of Gilead. Salicaceae. The buds are collected. Planted oc- casionally as an ornamental tree. Contains an aromatic, volatile oil, a balsamic resin, and salicin. Used as a tonic, stimulant, and expectorant; used formerly in ointments to prevent their becoming rancid. POPULUS TREMULOIDES Michx. Trembling aspen, aspen, white poplar. Salicaceae.—A small, open, round-topped tree with slender branches drooping at the tips, 30 to 60 feet tall; bark of the trunk black, fissured, with broad, flat ridges or, on young trees, yellow-green to gray and warty-roughened; leaves broadly ovate, lustrous, pointed, rounded at the base, fine- ly and regularly toothed, trembling in breezes; petioles flattened; catkins li/4 to 2Y2 inches long, in fruit 3 to 4 inches long. The bark collected. Infrequent in low, sandy ground near Lake Michigan; rare westward and southward in the state. The bark contains the crystalline glyco- side populin, which resembles salicin. Used as a bitter tonic and a feeble antiperiodic. A '^ ^/}\7 / ^^ lA^ -=^^ y V f/T \ If /^/ ^ P' 4/ k1 PRUNELLA VULGARIS L. Self- heal, heal-all, carpenter-weed, dragon head. Labiatae.—A prostrate, ascending or erect, branching, pubescent herb up to 18 inches tall, perennial; stems 4-angled, glabrous with age; leaves ovate-oblong, 1 to 4 inches long, petioled, opposite, irreg- ularly dentate to entire, obtuse, narrowed to the base; flowers purple, 2-lipped, in dense, terminal, conspicuously bracted, nearly sessile spikes 1/ to 1 inch long;' spikes 2 to 4 inches long in fruit. The herb collected. Frequent to com- mon in waste places, pastures, and fields, and about dwellings throughout the state. Contains a volatile oil.
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