Silphium L. (Heliantheae)

Silphium integrifolium 1 Lund Bot Garden 120912 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Silphium integrifolium 2 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Silphium integrifolium 3 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Silphium integrifolium 4 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Silphium perfoliatum 2 Lund Bot Garden 120912 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Silphium perfoliatum 4 Lund Bot Garden 120912 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Silphium trifoliatum 1 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Silphium trifoliatum 2 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Silphium trifoliatum 3 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Silphium trifoliatum 4 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Silphium trifoliatum 5 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).


Silphium perfoliatum 1 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Silphium perfoliatum 3 Lund Bot Garden 120912 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).