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

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

Acanthus cf mollis 3 Mytilini, Lesvos 130512 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acanthus cf mollis 4 Mytilini, Lesvos 130512 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acanthus greuterianus 2 near Lake Mikri Prespa, N Greece 180629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acanthus hungaricus 3 Lund Bot Garden 130816 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acanthus mollis 8 (cult) Trujillo SP 140509 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acanthus spinosus 2 (cult) Brunnby 060801 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acanthus cf mollis 1 Mytilini, Lesvos 130512 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acanthus cf mollis 2 Mytilini, Lesvos 130512 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acanthus greuterianus 1 near Lake Mikri Prespa, N Greece 180629 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acanthus hungaricus 1 Lund Bot Garden 130816 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acanthus hungaricus 2 Lund Bot Garden 130816 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acanthus mollis 5 (cult) Trujillo SP 140509 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acanthus mollis 6 (cult) Trujillo SP 140509 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acanthus mollis 7 (cult) Trujillo SP 140509 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Acanthus spinosus 1 (cult) Brunnby 060801 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).