Stenotus acaulis is a species of flowering plant in the family Asteraceae known by the common name stemless mock goldenweed.
It is native to the western United States, where it grows in rocky soils in sagebrush plateau and mountain habitats.
Stenotus acaulis is a perennial herb usually forming a compact tuft or mat of hairless to hairy and sometimes glandular herbage. The linear to widely lance-shaped leaves are up to 8 or 10 centimeters long with rigid, hair-lined edges.
The inflorescence is a solitary flower head or small cluster of a few heads. The flower head contains yellow disc florets and several yellow ray florets each about a centimeter long.