Gleditsia triacanthos 11 Metropolitan Parque, Santiago, Chile 171108 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gleditsia triacanthos 2 (cult) Haga, Stockholm 060528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gleditsia triacanthos 3 (cult) Haga, Stockholm 060528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gleditsia triacanthos 4 (cult) Haga, Stockholm 060528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gleditsia triacanthos 5 (cult) Studen Kladenets Reserve, Bulgaria 120510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gleditsia triacanthos 6 (cult) Studen Kladenets Reserve, Bulgaria 120510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gleditsia triacanthos 7 Metropolitan Parque, Santiago, Chile 171108 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gleditsia triacanthos 8 Metropolitan Parque, Santiago, Chile 171108 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gleditsia triacanthos 9 Metropolitan Parque, Santiago, Chile 171108 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gleditsia triacanthos 1 (cult) Haga, Stockholm 060528 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gleditsia triacanthos 10 Metropolitan Parque, Santiago, Chile 171108 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).