The species was described in 1981 from the type specimen observed on Mule Ridge in a string of peaks known as The Lassics.

[3] Sabulina decumbens is a low, mat-forming perennial herb growing a in a clump a few centimeters high from a thin, woody taproot.

The narrow, rigid, sometimes needle-like leaves are under a centimeter long and no more than 2 millimeters wide.

The tiny flowers have purple-tipped sepals a few millimeters long and five white petals which are slightly smaller.

It grows in the serpentine soils of the mountain forests among Jeffrey Pines.