Phoenicaulis is a monotypic genus of flowering plants in the mustard family, Brassicaceae. It contains the single species Phoenicaulis cheiranthoides, which is known by the common names daggerpod and wallflower phoenicaulis. The plant grows in many types of habitat, especially rocky areas. It occurs in sagebrush scrub, scree, exposed volcanic and clay slopes, rock outcrops, hills, banks, and meadows, into the alpine climate of mountains. It grows at up to 3200 meters in elevation.