Hastingsia serpentinicola is a species of flowering plant known by the common name Klamath rushlily.

It is native to the mountains of northwestern California and southwestern Oregon, where it grows in serpentine soils.

The top portion of the stem is a narrow, pointed inflorescence of many white or greenish lilylike flowers.

Each small flower has six curled perianth parts and six protruding stamens with very large anthers.

The flowers fall away to leave the developing fruits, which are capsules a few millimeters wide containing black seeds.