Alisma gramineum 2 Fussing Sö, Jylland 090830 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma lanceolatum 10 N of Sigsarve, Viklau, Gotland 170628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma lanceolatum 3 N of Sigsarve, Viklau, Gotland 170628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma lanceolatum 4 N of Sigsarve, Viklau, Gotland 170628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma lanceolatum 5 N of Sigsarve, Viklau, Gotland 170628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma lanceolatum 7 N of Sigsarve, Viklau, Gotland 170628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma lanceolatum 9 N of Sigsarve, Viklau, Gotland 170628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma plantago-aquatica 10 Vuonoviken W of Haparanda, Norrbotten 220729 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma plantago-aquatica 11 Vuonoviken W of Haparanda, Norrbotten 220729 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma plantago-aquatica 2 Skanörs Ljung Sk 130622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma plantago-aquatica 3 Skanörs Ljung Sk 130622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma plantago-aquatica 4 Skanörs Ljung Sk 130622 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma gramineum 1 Fussing Sö, Jylland 090830 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma lanceolatum 1 N of Sigsarve, Viklau, Gotland 170628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma lanceolatum 11 N of Sigsarve, Viklau, Gotland 170628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma lanceolatum 12 Svenstorp, Sk 820618 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma lanceolatum 13 Svenstorp, Sk 820618 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma lanceolatum 2 N of Sigsarve, Viklau, Gotland 170628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma lanceolatum 6 N of Sigsarve, Viklau, Gotland 170628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma lanceolatum 8 N of Sigsarve, Viklau, Gotland 170628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma plantago-aquatica 1 Skärhamn, Bohuslän 120701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma plantago-aquatica 5 Vuonoviken W of Haparanda, Norrbotten 220729 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma plantago-aquatica 6 Vuonoviken W of Haparanda, Norrbotten 220729 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma plantago-aquatica 7 Vuonoviken W of Haparanda, Norrbotten 220729 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma plantago-aquatica 8 Vuonoviken W of Haparanda, Norrbotten 220729 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Alisma plantago-aquatica 9 Vuonoviken W of Haparanda, Norrbotten 220729 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).