Erigeron radicatus is a North American species of flowering plant in the daisy family known by the common names Hooker’s fleabane and taproot fleabane The species grows in central Canada (Alberta, Saskatchewan) and parts of the north-central United States, primarily the northern Rocky Mountains and the Black Hills. It has been found in Idaho, Montana, Utah, Wyoming, Colorado, Nebraska, and South Dakota, with a few isolated populations reported from North Dakota.