Ambrosia artemisiifolia

Photo: Ambrosia artemisiifolia 0.
Photo: Ambrosia artemisiifolia 0.

Flowerbuds and leaf. Puistola, Helsinki, Finland. Wild. 2010-09-10.
Photo: Ambrosia artemisiifolia 1.
Photo: Ambrosia artemisiifolia 1.

Plant in flowerbud. Puistola, Helsinki, Finland. Wild. 2010-09-10.
Photo: Ambrosia artemisiifolia 2.
Photo: Ambrosia artemisiifolia 2.

Flowerbuds. Puistola, Helsinki, Finland. Wild. 2010-09-10.
Photo: Ambrosia artemisiifolia 3.
Photo: Ambrosia artemisiifolia 3.

Leaf and stem. Puistola, Helsinki, Finland. Wild. 2010-09-10.
Photo: Ambrosia artemisiifolia 4.
Photo: Ambrosia artemisiifolia 4.

Flowering tops. Puistola, Helsinki, Finland. Wild. 2010-09-10.