Physaria congesta

Physaria congesta (syn. Lesquerella congesta) is a rare species of flowering plant in the mustard family known by the common name Dudley Bluffs bladderpod. It is endemic to western Colorado in the United States, where it is known only from seven occurrences in Rio Blanco County. It is federally listed as a threatened species. This is a petite perennial herb taking the form of a small, compact mound no more than about 2 centimeters tall. A short stem arises from a hairy caudex that remains buried in the soil. This is attached to a long, slender taproot. The leaves are linear or lance-shaped and measure up to 1.5 centimeters in length. They are coated in hairs, giving them a gray or silver color. The inflorescence is a raceme of flowers. It is so short it generally lies within the densely packed leaves. The flowers have bright yellow petals each about half a centimeter long. The fruit is a silique about the same length. The flowers are pollinated by the bee Andrena hicksii and other Andr......read more on Wikipedia.