Trollius acaulis Göteborg Bot Garden 910607 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius asiaticus 1 Göteborg Bot Garden 130524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius asiaticus 2 Göteborg Bot Garden 130524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius chinensis 4 Göteborg Bot Garden 120627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius chinensis 5 Göteborg Bot Garden 120627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius europaeus 1 Garda de Sus, Romania 090615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius europaeus 10 Gyetorp, Trolle-Ljungby Sk 090604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius europaeus 11 Sularp, Hardeberga Sk 200623 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius europaeus 12 Sularp, Hardeberga Sk 200623 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius europaeus 7 Gyetorp, Trolle-Ljungby Sk 090604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius europaeus 8 Gyetorp, Trolle-Ljungby Sk 090604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius europaeus 9 Gyetorp, Trolle-Ljungby Sk 090604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius laxus 3 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius laxus 4 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius laxus 5 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius laxus 6 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius laxus 7 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius laxus 8 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius laxus 9 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius ranunculoides 1 Göteborg Bot Garden 120628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius ranunculoides 2 Göteborg Bot Garden 120628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius ranunculoides 3 Göteborg Bot Garden 120628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius chinensis 1 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius chinensis 2 Copenhagen Bot Garden 130611 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius chinensis 3 Göteborg Bot Garden 120627 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius europaeus 2 Gyetorp, Trolle-Ljungby Sk 090604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius europaeus 3 Gyetorp, Trolle-Ljungby Sk 090604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius europaeus 4 Gyetorp, Trolle-Ljungby Sk 090604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius europaeus 5 Kungsmarken, Södra Sandby Sk 110510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius europaeus 6 Kungsmarken, Södra Sandby Sk 110510 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius laxus 1 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Trollius laxus 2 Bergianska 150527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).