Lavender is a semi-shrub or shrub, branched, stellate, dense in the young part; old branches are taupe or dark brown, the cortex is stripped, with long flowering branches and short renewed branches. Leaves linear or lanceolate linear, large, detached, 3-5 cm long, 0.3-0.5 cm wide, densely or sparsely gray stellate, dry grayish or olive green, in The leaves on the branches are small, clustered, not more than 1.7 cm long and 0.2 cm wide. They are densely grayish-white-stellate. They are grayish-white when dry. They are apex blunt, and the base is gradually narrowed into a very short stalk, whole edge, marginal outer volume, midrib. Under the bulge, the lateral veins and the veins are not obvious.
The stalks usually have 6-10 flowers, most of which are gathered at the top of the branches into intermittent or nearly continuous spikes. The spikes are about 3(5) cm long, and the peduncle is about 3 times longer than the inflorescence itself. Velvet ovate; Gray, branched or unbranched. Calyx ovate tube or subtubular, 4-5 mm long, 13 veins, inner surface nearly glabrous, 2-lipped, upper lip 1 teeth wider and longer, lower lip with 4 short teeth, teeth equal and distinct. The corolla is about twice as long as the calyx, with 13 veins. The outside is the same as the calyx, but the base is nearly hairless. The inner part is glandular hair in the throat and crown, and the middle has a hair ring. Lip shape, upper lip straight extension, 2-lobed, lobes larger, rounded, slightly overlapping with each other, lower lip, 3-lobed, lobes smaller. Stamens 4, inserted above the hair ring, not extending, long front, filaments flat, glabrous, anthers. Style coat, compressed at apex, ovoid. Disk 4 lobed, lobes opposite to ovate lobes.
Nutlet 4, elliptic, smooth, shiny, with a base facing. Flowering in June. The whole plant has a light aroma of wood, and the oil glands are hidden in the fluff of the flowers, leaves and stems, and the oil glands are gently touched to break the fragrance.