Stems: branching, pubescent, leafy to the inflorescence. Leaves: basal ones in tufts, spatulate, obtuse, slightly dentate; stem-leaves oblong, acute. Flowers: yellow, petals twice the length of the calyx, entire. Fruit: pods acute, at length slightly twisted.
A plant that resembles a Treacle Mustard, but is much smaller and has a rosulate tuft of leaves at the base. Tiny single leaves also grow up on the branching stems, and the little deep yellow flowers grow in close clusters.
Draba alpina, or Alpine Whitlow Grass, is a tiny species found at extremely high altitudes. The leaves are all basal and grow in a dense tuft, while the tiny clusters of little yellow flowers are set on the top of short naked stalks. The whole plant is hairy and seldom exceeds four inches in height.
Draba nivalis, or Arctic Whitlow Grass, has numerous slender matted branches, and lance-shaped hairy leaves which have a strongly marked mid-nerve. The flowers are yellow and inconspicuous, and the whole plant is covered with tiny hairs and a whitish bloom. It grows at high altitudes.
Draba glacialis, or Pale Yellow Whitlow Grass, grows on the summits of many mountains. It has strongly keeled leaves and the petals are pale yellow, becoming darker at the base.