United States, North Carolina, Randolph, South of NC Zoological Park greenhouse complex. North Carolina Zoological Park, Asheboro
Reseeding freely in sunny garden.
Rays pale yellow, 1.5 mm long, 2 (1-3) per head; calyx 10 mm Long. Achenes black, 6-7 mm, with ascending hairs. Blades opposite; leaflets alternate or sometimes opposite; bearing translucent orange glands; rachis alate, canaliculate. Aromatic annual herb with strict branching and fibrous roots. Stems 0.75-1.5 m, reddish or green.