The drug plants of Illinois drugplantsofilli44teho Year: 1951 Tehon THE DRUG PLANTS OF ILLINOIS 53 \ ERYTHRONIUM AMERIGANUM Ker. Yellow adder's-tongue, dog's-tooth violet. Liliaceae.—A low, stemless, 2- leaved herb 6 to 12 inches tall, perennial; corm deep, membranous-covered, Y? to 1 inch long, with off-shooting small corms on stems from its base; leaves pale green mottled with purple, oblong-lanceolate, with long, clasping petioles, 3 to 8 inches long; flowers yellow, solitary, and nodding at the top of a smooth stalk up to 12 inches long; fruit an obovate, short-stalked cap- sule 1/2 to 1
The drug plants of Illinois drugplantsofilli44teho Year: 1951 Tehon THE DRUG PLANTS OF ILLINOIS 53 \ ERYTHRONIUM AMERIGANUM Ker. Yellow adder's-tongue, dog's-tooth violet. Liliaceae.—A low, stemless, 2- leaved herb 6 to 12 inches tall, perennial; corm deep, membranous-covered, Y? to 1 inch long, with off-shooting small corms on stems from its base; leaves pale green mottled with purple, oblong-lanceolate, with long, clasping petioles, 3 to 8 inches long; flowers yellow, solitary, and nodding at the top of a smooth stalk up to 12 inches long; fruit an obovate, short-stalked cap- sule 1/2 to 1 inch long. The corm collected. Usually in dense colonies, infrequent to frequent in rich woods throughout the state. The medicinally effective constituents un- known. Used as an emetic. EUPATORIUM PERFOLIATUM L. Boneset, thoroughwort, ague weed, feverwort, sweating plant. Cotnposi- tae.—An erect, usually unbranched, often rather coarse herb 2 to 5 feet tall, peren- nial; stems stout, rigid, hairy; leaves op- posite, grown together around the stem, lanceolate, tough, veiny, wrinkled on both surfaces; flower heads white, small, nu- merous in a stiff, branched, flat-topped, terminal inflorescence. The herb collected without large stems, also the leaves and flowering tops when the plant is in flower. Common through- out the state in low ground; late August through September. Contains the bitter glucoside eupatorin. Used as a tonic, diaphoretic, emetic, and cathartic.
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