Stratiotes aloides 1 Ekebysjön, Danderyd, Uppland 050816 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Stratiotes aloides 14 Spången E of Ljungbyhed Sk 160715 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Stratiotes aloides 15 Spången E of Ljungbyhed Sk 160715 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Stratiotes aloides 16 Spången E of Ljungbyhed Sk 160715 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Stratiotes aloides 17 Spången E of Ljungbyhed Sk 160715 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Stratiotes aloides 18 Spången E of Ljungbyhed Sk 160715 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Stratiotes aloides 19 (cult) Flyinge, Södra Sandby Sk 200723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Stratiotes aloides 2 Hellasgården, Nacka, Södermanland 050819 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Stratiotes aloides 4 Zygmantiskes SSW of Vilnius, Lithuania 150808 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Stratiotes aloides 6 Spången E of Ljungbyhed Sk 160715 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Stratiotes aloides 7 Spången E of Ljungbyhed Sk 160715 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Stratiotes aloides 8 Spången E of Ljungbyhed Sk 160715 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Stratiotes aloides 10 Spången E of Ljungbyhed Sk 160715 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Stratiotes aloides 11 Spången E of Ljungbyhed Sk 160715 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Stratiotes aloides 12 Spången E of Ljungbyhed Sk 160715 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Stratiotes aloides 13 Spången E of Ljungbyhed Sk 160715 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Stratiotes aloides 19 Spången E of Ljungbyhed Sk 160715 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Stratiotes aloides 20 (cult) Flyinge, Södra Sandby Sk 200723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Stratiotes aloides 21 (cult) Flyinge, Södra Sandby Sk 200723 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Stratiotes aloides 3 Ekebysjön, Danderyd, Uppland 050816 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Stratiotes aloides 5 Zygmantiskes SSW of Vilnius, Lithuania 150808 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Stratiotes aloides 9 Spången E of Ljungbyhed Sk 160715 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).