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1 Fruit with a flat, straight beak 2-7 cm long, hispid-ciliate along the margins
..2 Plants perennial or biennial (annual in Daucus pusillus), 3-20 dm tall; rays 12-60.
....3 Rays (1-) 3 (-5); mericarps 5.5-10 mm long, glabrous or pubescent with weak appressed hairs
......4 Ribs of the mericarp obsolete; rays 3-5
......4 Ribs of the mericarp prominent (paler than the intervals); rays 5-12
..2 Fruits 5-11 mm long, 4-7 mm broad; corollas yellow; [native, IN, KY, TN, and AL westward]
....3 Fruits 4-6 mm long; plant from a cluster of fleshy roots; [native, rare and northern]
....3 Fruits 2-2.5 mm long; plant from a thickened taproot; [collectively common plant of mostly disturbed areas]
......4 Plants perennial from a globose tuber; flowering Feb-Mar; [of rich forests]
........5 Rays (1-) 3 (-5); mericarps 5.5-10 mm long, glabrous or pubescent with weak appressed hairs
..........6 Mericarps ovoid, acute, not beaked
..........6 Mericarps lanceolate, with an evident beak 1-3 mm long