The drug plants of Illinois drugplantsofilli44teho Year: 1951 RHUS GLABRA L. Smooth sumac, scarlet sumac, vinegar tree. Anacar- diaceae.—An upright, upwardly spread- ing, smooth shrub up to 12 feet tall; bark of the stems brownish gray, smooth; branches coarse, spreading, armlike, with large pith; leaves bright green above, white beneath, pinnately compound, 1 to 3 feet long, leaflets 11 to 31 in number, lanceo- late, pointed, sharply serrate, 2 to 4 inches long; flowers greenish-yellow, small, in large, dense, terminal clusters; fruit a round, bright red or green, hairy drupe in dense, larg
The drug plants of Illinois drugplantsofilli44teho Year: 1951 RHUS GLABRA L. Smooth sumac, scarlet sumac, vinegar tree. Anacar- diaceae.—An upright, upwardly spread- ing, smooth shrub up to 12 feet tall; bark of the stems brownish gray, smooth; branches coarse, spreading, armlike, with large pith; leaves bright green above, white beneath, pinnately compound, 1 to 3 feet long, leaflets 11 to 31 in number, lanceo- late, pointed, sharply serrate, 2 to 4 inches long; flowers greenish-yellow, small, in large, dense, terminal clusters; fruit a round, bright red or green, hairy drupe in dense, large, terminal, club-shaped clusters. The leaves, fruit, and bark of the stem and root collected. Frequent to common or locally abundant throughout the state as a weed along fences, in abandoned fields, and at the edges of woods. The berries contain acid malates equiv- alent to 6 to 8 per cent of malic acid; the leaves and bark contain tannin and gallic acid. Used as an astringent, refrigerant, and gargle. {Rhus typhina L., staghorn sumac, and Rhus copallina L., dwarf sumac, are collected, the former for fruit, the latter for bark.] RHUS TOXICODENDRON L. Poi- son ivy, poison oak. Anacardiaceae.— A low shrub or climbing vine; stems un- derground or clinging by multitudes of fibrous roots, very long; leaves compound, alternate, long-petioled; leaflets 3, the terminal one stalked, ovate, pointed, 2 to 6 inches long, the lateral two nearly ses- sile, asymmetrical, of about the same size, all three variable in size, coarsely dentate or entire; flowers greenish, inconspicuous, in small, axillary panicles; fruit a pale, greenish-white, nearly pulpless, flattened, smooth drupe. The leaves are collected and sold fresh or dry. Common to abundant throughout the state as a vine on tree trunks and fences and as a shrub in woods, along fencerows, and in wasteland. Contains only the poisonous, volatile oil urushiol. Supposed to have value in the treatment of cutaneous eruptions.
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