Columbiadoria hallii (A. Gray) G.L. Nesom
Family: Asteraceae
Columbia River Daisy
[Haplopappus hallii A. Gray,  more...]
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Leaf blades (largest) 2-5 cm. Heads 5-15+. Ray corollas 6-10 mm, laminae 6-7 × 2 mm. Disc corollas 6-7 mm. Cypselae 4-5 mm.

Flowering Aug-Oct. Bluffs, benches, crevices, dry, open to lightly wooded slopes; 50-1200 m; Oreg., Wash.