Erigeron radicatus - photos and description

 

 

Low plant with almost all leaves in a basal cluster. Leaves are linear, we measured one at 34 mm long and 2 mm wide. Flower heads solitary, white petals with yellow disk florets, flower heads measured at 1 cm in diameter. One or two stem leaves. Plant pubescent. Begins flowering late May.

Height listed in Budd's Flora to 10 cm, we measured scapes to 8 cm tall.

Habitat is slopes and crests of eroded hills on southern prairies.

Very rare, listed as an S2 by the Saskatchewan Conservation Data Centre.

This plant might be confused with another low-growing, early flowering Fleabane, Erigeron compositus. However that plant's basal leaves are divided into 2 or 3 lobes.

Photos taken May 15th on a rocky cliff in the Cypress Hills about 450 km southwest of Regina, and May 31st, on a steep clay hill, about 200 km southwest of our home in Regina, SK.