Thymophylla tephroleuca

Thymophylla tephroleuca (formerly Dyssodia tephroleuca) is a rare species of flowering plant known by the common names ashy pricklyleaf and ashy dogweed. It is endemic to Texas in the United States, where it occurs in two counties near the Mexican border. It became rare due to the destruction and degradation of its habitat. It is a federally listed endangered species of the United States....read more on Wikipedia.