Draba lactea

Draba lactea, the milky or Lapland whitlow-grass, is a small caespitose perennial herb of the Brassicaceae forming dense tufts only 2-5 cm tall. It is widely distributed in the high Arctic of Europe, Asia, and North America (including Norway, Greenland, arctic Canada, Alaska, and the northern Rocky Mountains in Montana), extending south into alpine habitats on calcareous gravels, frost-stirred soils, and rocky tundra. Leaves are confined to a basal rosette, oblanceolate to obovate, with star-shaped (stellate) hairs on both surfaces and simple hairs along the margins. The slender, leafless flowering scape is glabrous and bears a few pure white four-petaled flowers about 4-5 mm across from June to August. The fruits are flattened, elliptical to ovate silicles a few millimeters long, often glabrous, on ascending pedicels.