Secale strictum 1 the Vigla Pass, Mt Varnous, N Greece 180630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Secale strictum 2 the Vigla Pass, Mt Varnous, N Greece 180630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Secale strictum 3 the Vigla Pass, Mt Varnous, N Greece 180630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Secale cereale 1 Bergianska 060620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Secale cereale 1 Lund Bot Garden 140903 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Secale cereale 2 Lund Bot Garden 140903 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Secale strictum 4 the Vigla Pass, Mt Varnous, N Greece 180630 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Secale sylvestre 1 Mórahalom, Hungary 240509 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Secale sylvestre 2 Mórahalom, Hungary 240509 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Secale vavilovii 1 Copenhagen Bot Garden 140719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Secale vavilovii 2 Copenhagen Bot Garden 140719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Secale vavilovii 3 Copenhagen Bot Garden 140719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).