LAVANDULA, in botany, lavender, a genus of the Didynamia Gymnospermia class and order. Natural order of Verti cillatx. Labiatm, Jussieu. Essential cha racter: calyx ovate, obscurely toothed, supported by a bracte ; corolla re-supine ; stamina within the tube. There are seven species, of which L. silica, common laven der, has a shrubby stem much branched, frequently five or six feet high, with nu merous hoary leaves, the upper ones ses sile, the lower petioled ; the flowers are produced in terminating spikes from the young shoots, on long peduncles ; the spikes are composed of interrupted whorls, in which the flowers are from six to ten, the lower whorls more remote ; each flower upright, on a short pedicle ; the usual colour of the corolla is blue, sometimes varying with white flowers ; the whole plant is covered with a down, composed of forked hairs. It is a native of the south of Europe, and has long been celebrated for its virtues in nervous dis orders ; the officinal preparations of lay. ender, are the essential oil, a simple spirit, and a compound tincture.
LAVATEItA, in botany, so named from Lavater, a physician at Zurich ; a genus of the Monadelphia Polyandria class and order. Natural order of Columniferx.
Malvacex, Jussieu. Essential character ; calyx double, outer tiffid; arilsvery many, one-seeded. There are nine species, of which L. arbo re a lavatera, or mallow -tree, rises in gardens, with a strong, thick stalk, frequently to the height of eight or ten feet ; in its wild state, not more than four or five ; leaves alternate, cordate, roundish, seven .angled, the angles blunt, but soft as velvet, shorter than the pe tioles ; flowers mostly in pairs, sometimes three together, on upright peduncles, an inch and half in length ; corolla purplish red, spreading, bell-shaped, like that of the common mallow, an inch or more in diameter ; petals broader at top than at the base, so that the calyx appears beĽ tween the claws. The ring or whorl of fruits is seven or eight-capsuled ; com mon receptacle awl-shaped, with a conoid globule at top, and small crescent-shaped lamella at the base, and the interstices of the capsules. Native of Italy, the Levant, and Britain.