Tagetes triradiata

Tagetes triradiata is a Mexican species of marigolds in the sunflower family. It is native to central Mexico (Puebla, Morelos, México State, D.F., Veracruz).
"Tagetes triradiata" is an hairless annual herb up to 50 cm (20 inches) tall. Leaves are pinnately compound with 15-21 leaflets. One plant produces numerous small flower heads in a flat-topped array, each containing 3 bright yellow ray florets surrounding several yellow disc florets.
External links.
Arizona State Vascular Plant Herbarium