Erigeron bellidiastrum var. robustus
Brittonia 6: 256. 1947.
Stems moderately branched, usually simple proximally; proximal mostly (2–) 2.5–5 mm wide. Leaves: basal and proximal cauline blades oblanceolate, 20–40 (–60) × 3–5 (–15) mm, margins entire or rarely with a pair of shallow teeth. 2n = 18.
Phenology: Flowering May–Jul(–Sep).
Habitat: Open habitats in deep, loose sand
Elevation: 500–1100 m
Colo., Kans., Nebr., N.Mex., Okla., Tex.
Intergrades between var. robustus and var. bellidiastrum occur in their area of geographic overlap.