Taxa: Ambrosia psilostachya (Ambrosia californica, Ambrosia psilostachya var. coronopifolia, Ambrosia rugelii, Ambrosia psilostachya var. californica, Ambrosia psilostachya var. lindheimeriana, Ambrosia coronopifolia, Ambrosia cumanensis, Franseria psilostachya, Ambrosia psilostachya var. psilostachya, Am
... (show all)brosia lindheimeriana)