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Omalotheca
See list of 2 species in this genus-
1a. Pappus bristles distinct and falling separately; principal leaf blades 12–30 mm long; alpine plants 2–10 cm tall, growing at elevation exceeding 1000 m
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1b. Pappus bristles united at the base and falling together; principal leaf blades 25–51 mm long; boreal plants 10–70 cm tall, growing at elevation less than 1000 m
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Each photo represents one species in this genus.