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Commonly known as Smooth catsear this annual This is an annual herb has a small taproot, a basal leaf rosette and one or more slender stems 10ten to 45 centimeters high. The leaves may be as long as ten centimeters, with smooth edges or small lobes; the green leaves frequently exhibit a purplish tinge near the veins. The stems are devoid of branching leaves, and topped by flower heads with small overlapping purple-tipped phyllaries and vivid yellow ray florets.
As with all Asteraceae, Cretaceous origin for the Asteridae a Cretaceous origin for their entire order has been suggested in East Gondwanaland (Australasia).