Hackelia cusickii is a species of flowering plant in the borage family known by the common name Cusick's stickseed. It is native to the Modoc Plateau in the northeastern corner of California and adjacent sections of Nevada and Oregon, where it grows in coniferous forest, woodlands, and talus. It is a perennial herb up to about 50 centimeters tall and coated thinly in stiff hairs. Most of the leaves are located around the base of the plant, reaching up to 18 centimeters long; there are a few smaller leaves on lower part of the stem as well. The hairy inflorescence is an open array of branches, each a coiling panicle of flowers. Each flower is just over a centimeter wide with blue lobes with white appendages at the bases. The fruit is a cluster of prickly nutlets.