Erigeron radicatus

Erigeron radicatus is a North American species of flowering plant in the family Asteraceae known by the common names Hooker's fleabane[2] and taproot fleabane[3] 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.[4]

Erigeron radicatus
Conservation status
Vulnerable  (NatureServe)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Erigeron
Species:	E. radicatus
Binomial name
Erigeron radicatus Hook.
Synonyms[1]
Erigeron huberi S.L.Welsh & N.D.Atwood Erigeron inamoenus A.Nelson Erigeron macounii Greene

Erigeron radicatus is a small perennial herb up to 12 centimeters (4.8 inches) tall, producing a woody branching caudex. The plant generally produces only 1 flower head per stem. Each head has 12–85 purple or white ray florets surrounding numerous yellow disc florets. The species grows on rocky slopes, ledges, ridges, and cliff faces at high elevations.[2][5][6]