A species of sunflower cultivated for its tuber, which is used as a root vegetable.

Jerusalem Artichoke

A species of sunflower cultivated for its tuber, which is used as a root vegetable.

An illustration of a disk-floret of a asteraceae. The family Asteraceae or Compositae (known as the aster, daisy, or sunflower family) is the largest family of flowering plants, in terms of number of species.

Disk-floret of Asteraceae

An illustration of a disk-floret of a asteraceae. The family Asteraceae or Compositae (known as the…

An illustration of a disk-floret of a asteraceae. The family Asteraceae or Compositae (known as the aster, daisy, or sunflower family) is the largest family of flowering plants, in terms of number of species.

Disk-floret of Asteraceae

An illustration of a disk-floret of a asteraceae. The family Asteraceae or Compositae (known as the…

An illustration of a Gynaeceum of a asteraceae. The family Asteraceae or Compositae (known as the aster, daisy, or sunflower family) is the largest family of flowering plants, in terms of number of species.

Gynaeceum of Asteraceae

An illustration of a Gynaeceum of a asteraceae. The family Asteraceae or Compositae (known as the aster,…

An illustration of a inflorescence of a asteraceae. The family Asteraceae or Compositae (known as the aster, daisy, or sunflower family) is the largest family of flowering plants, in terms of number of species.

Inflorescence of Asteraceae

An illustration of a inflorescence of a asteraceae. The family Asteraceae or Compositae (known as the…

A genus of plants native to Mexico and Central America. Unable to endure frost.

Dahlia

A genus of plants native to Mexico and Central America. Unable to endure frost.

The state banner of Kansas, the sunflower state.

Kansas

The state banner of Kansas, the sunflower state.

A genus of plants of the aster family, which have large, cordate leaves and terminal, flat, circular, heads of flowers. They are herbaceous plants.

Sunflower

A genus of plants of the aster family, which have large, cordate leaves and terminal, flat, circular,…

Helianthus argophyllus is the silver leaved variety of the sunflower. The flower heads are yellow. The leaves have a soft, silky, silvery down.

Flowering Branch of a Sunflower (Helianthus Argophyllus)

Helianthus argophyllus is the silver leaved variety of the sunflower. The flower heads are yellow. The…

The helianthus decapetalus multiflorus sunflower has firm leaves and large heads. The common form has a dwarf habit with double flowers.

Flowering Branch of a Sunflower (Helianthus Decapetalus Multiflorus)

The helianthus decapetalus multiflorus sunflower has firm leaves and large heads. The common form has…

Helianthus orgyalis sunflowers have small, yellow heads. The flowers bloom in the autumn. The plant grows between six and ten feet tall.

Upper Portion of Stems and Detached Flower Head of a Sunflower (Helianthus Orgyalis)

Helianthus orgyalis sunflowers have small, yellow heads. The flowers bloom in the autumn. The plant…

Sunflower grow to be six feet tall. The flower heads are large, varying in size and color.

Flower Head of a Sunflower

Sunflower grow to be six feet tall. The flower heads are large, varying in size and color.

Helianthus annus caifornicus plenissimus is the scientific name of the pictured sunflower. It is another form of the common sunflower.

Habit and Detached Single Flower Head of a Sunflower

Helianthus annus caifornicus plenissimus is the scientific name of the pictured sunflower. It is another…