. The drug plants of Illinois. Botany, Medical; Botany. Tehon THE DRUG PLANTS OF ILLINOIS 79 MENTHA ARVENSIS L. Field mint. Labiatae.—An erect, well-branched pubescent herb up to 2l/^ feet tall, peren- nial; rootstocks creeping; stems 4-angled, retrorsely hairy; leaves ovate, strongly ar- omatic, serrate, 1 to 2 inches long, oppo- site; flowers white to lavender, small, 2- lipped, in rather dense, axillary whorls; seeds minute, smooth, light brown, irreg- ularly lined on the convex side. The herb collected. On moist waste and idle lands throughout the state, frequent northward, becoming infreq
. The drug plants of Illinois. Botany, Medical; Botany. Tehon THE DRUG PLANTS OF ILLINOIS 79 MENTHA ARVENSIS L. Field mint. Labiatae.—An erect, well-branched pubescent herb up to 2l/^ feet tall, peren- nial; rootstocks creeping; stems 4-angled, retrorsely hairy; leaves ovate, strongly ar- omatic, serrate, 1 to 2 inches long, oppo- site; flowers white to lavender, small, 2- lipped, in rather dense, axillary whorls; seeds minute, smooth, light brown, irreg- ularly lined on the convex side. The herb collected. On moist waste and idle lands throughout the state, frequent northward, becoming infrequent south- ward. Contains an aromatic oil. Used as a car- MENTHA PIPERITA L. Pepper- mint, lammint, lamb mint, brandy mint. Labiatae. U. S. P. XI, pp. 230, 259.—An erect, branching, smooth herb 1 to 3 feet tall, perennial; rootstocks long, creeping; stems 4-angled, reddish-purple to green; leaves dark green, ovate, aromatic, oppo- site, petioled, serrate, 1 to 2 inches long; flowers purplish, small, hardly 2-lipped, in dense, oblong, terminal spikes. Leaves and flowering tops collected as soon as the flowers commence opening. In moist places about lakes and streams and along roads and ditches throughout the state. Contains the aromatic oil of peppermint, which contains menthol. Used as an aro- matic, stimulant, and Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Tehon, L. R. (Leo Roy), 1895-1954. Urbana, Ill. : Natural History Survey Division
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