⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record gcc-79411, with some changes.
This name is a synonym of Ambrosia polystachya .
The record derives from TICA which reports it as a synonym (record 3C7987BA-FA1A-4852-BB33-6B6770B18C5D
) with original publication details: Rhodora 37 185 1935.