Sparganium angustifolium 1 Smögen, Bohuslän 900706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium angustifolium 2 Osby, Skåne 960924 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium angustifolium 3 Osby, Skåne 960924 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium emersum 1 Lönsboda, Skåne 940903 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium emersum 11 Kemijärvi, Lappland, Finland 220728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium emersum 13 Kemijärvi, Lappland, Finland 220728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium emersum 6 Vomb Sk 130928 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium emersum 7 Vomb Sk 130928 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium emersum 8 Kemijärvi, Lappland, Finland 220728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium emersum 9 Kemijärvi, Lappland, Finland 220728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium erectum 1 Snårestad Sk 130907 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium erectum 10 Snårestad Sk 130907 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium erectum 11 Snårestad Sk 130907 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium erectum 12 Snårestad Sk 130907 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium erectum 13 Snårestad Sk 130907 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium erectum 14 Snårestad Sk 130907 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium erectum 7 Snårestad Sk 130907 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium erectum 8 Snårestad Sk 130907 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium erectum 9 Snårestad Sk 130907 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium erectum x microcarpum 1 Skivarp Sk 130907 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium erectum x microcarpum 2 Skivarp Sk 130907 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium erectum x microcarpum 3 Skivarp Sk 130907 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium erectum x microcarpum 4 Skivarp Sk 130907 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium erectum x microcarpum 5 Skivarp Sk 130907 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium gramineum 1 Lärkesholm, Tåssjö Sk 120829 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium gramineum 2 Lärkesholm, Tåssjö Sk 120829 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium gramineum 3 Lärkesholm, Tåssjö Sk 120829 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium gramineum 4 Immeln, Skåne 940903 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium gramineum 5 Immeln, Skåne 940903 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium hyperboreum Raubergstulen, Norway 820731 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium microcarpum 2 Sturup Sk 130907 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium microcarpum 3 Sturup Sk 130907 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium microcarpum 5 Sturup Sk 130907 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium microcarpum x neglectum Mossbystrand, Skivarp Sk 130907 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium natans 1 Skåne, Gånarp 060802 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium natans 2 mouth of the river Mörrumsån, Blekinge 110814 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium natans 4 mouth of the river Mörrumsån, Blekinge 110814 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium neglectum 2 Balkåkra Sk 130907 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium neglectum 4 Balkåkra Sk 130907 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium neglectum 5 Balkåkra Sk 130907 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium emersum 10 Kemijärvi, Lappland, Finland 220728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium emersum 12 Kemijärvi, Lappland, Finland 220728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium emersum 2 Vomb Sk 130928 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium emersum 3 Vomb Sk 130928 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium emersum 4 Vomb Sk 130928 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium emersum 5 Vomb Sk 130928 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium erectum 2 Snårestad Sk 130907 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium erectum 3 S of Mölle, Brunnby Sk 060801 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium erectum 4 S of Mölle, Brunnby Sk 060801 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium erectum 5 S of Mölle, Brunnby Sk 060801 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium erectum 6 S of Mölle, Brunnby Sk 060801 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium glomeratum 1 NE of Klippan, Skåne 950827 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium glomeratum 2 NE of Klippan, Skåne 950827 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium hyperboreum 1 near Kangerlussuaq, Greenland 140712 - Photo: (© 2014 Jan Thomas Johansson).

Sparganium hyperboreum 2 near Kangerlussuaq, Greenland 140712 - Photo: (© 2014 Jan Thomas Johansson).

Sparganium microcarpum 1 Vagnhärad, Södermanland 030725 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium microcarpum 4 Sturup Sk 130907 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium natans 3 mouth of the river Mörrumsån, Blekinge 110814 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium neglectum 1 (cult) Stångby, Skåne 050708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Sparganium neglectum 3 Balkåkra Sk 130907 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).