Not an accepted name (status: unknown). The accepted name is Ambrosia psilostachya DC., 1836.

Ambrosia psilostachya var. coronopifolia (Torr. & A.Gray) Farw. ex Fernald, 1950 2% complete

No common name

Manual: 1470 (1950)

There is no corrections for Ambrosia psilostachya var. coronopifolia yet.