In many places are clumps of birches and junipers, which are the principal trees of the Pamir, and on the undulating plains grow tamarisks and sedges and mugwort, and a sort of reed very abundant by the sides of the saline pools, and a dwarf labiate called "terskenne" by the Kirghizes.

The general aspect of the various species which compose this genus of labiate plants, although presenting very characteristic differences, merges gradually from one species to another; all are, in their native habitat, small ligneous undershrubs of from one to two feet in height, with a thin bark, which detaches itself in scales; the leaves are linear, persistent, and covered with numerous hairs, which give the plant a hoary appearance.

Like all fruticulose labiates which have a hard compact tissue and contain much oily matter, the lavender absorbs less moisture than herbs which are soft and spongy, and, as it always prefers a dry calcareous, even stony, soil, the northern cultivators find that by selecting such localities the tissues of the plant take up so little water that the frost does not injure them.

And finally, highest of all are the flowers like labiates (rosemary, Salvia, etc.)