Ambrosia

Ambrosia hispida

Coastal ragweed

Ambrosia psilostachya

Dunbible-weed

Ambrosia artemisioides

Ambrosia arborescens

Ambrosia velutina

Ambrosia media

Ambrosia aspera

Ambrosia humilis

Ambrosia mexicana

Ambrosia purpurascens

Ambrosia striata

Ambrosia variabilis

Ambrosia villosissima

Franseria andina

Gaertneria deltodea

Hemiambrosia heterocephala

Hymenoclea hemidioica

Ambrosia confertiflora

Bur ragweed

Ambrosia acanthicarpa

Hooker's bur ragweed

Ambrosia bidentata

Southern ragweed