Tanacetum coccineum 3 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum coccineum 4 Bergianska 060620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum coccineum 5 Bergianska 060620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum coccineum 7 Bergianska 050621 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum corymbosum 4 W of Mandra, Thracia, Greece 060605 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum corymbosum 5 Garda de Sus, Romania 090615 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum corymbosum 6 Roma Sockerbrukspark, Gotland 070804 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum corymbosum 7 Roma Sockerbrukspark, Gotland 070804 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum ferulaceum var ferulaceum 1 Santa Lucia de Tirajana, Gran Canaria 080413 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum ferulaceum var ferulaceum 2 Santa Lucia de Tirajana, Gran Canaria 080413 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum ferulaceum var ferulaceum 4 Santa Lucia de Tirajana, Gran Canaria 080413 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum ferulaceum var latipinnum 2 Anden Verde, Gran Canaria 080410 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum ferulaceum var latipinnum 3 Copenhagen Bot Garden 130116 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum ferulaceum var latipinnum 4 Copenhagen Bot Garden 130116 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum ferulaceum var latipinnum 5 Copenhagen Bot Garden 130116 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum haradjanii 1 Copenhagen Bot Garden 130625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum haradjanii 2 Copenhagen Bot Garden 080710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum haradjanii 3 Copenhagen Bot Garden 130625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum macrophyllum 1 (cult) Lund Sk 120705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum macrophyllum 2 (cult) Lund Sk 120705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum macrophyllum 3 Partheno Dasos, Rodhopi Mountains, N Greece 180704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum macrophyllum 4 Partheno Dasos, Rodhopi Mountains, N Greece 180704 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum oshanahanii 1 Jardin Botanico, Gran Canaria 080417 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum oshanahanii 2 Jardin Botanico, Gran Canaria 080417 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum oshanahanii 3 Jardin Botanico, Gran Canaria 080417 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum parthenium 1 Lund Sk 120726 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum parthenium 3 Lund Sk 120726 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum ptarmicaeflorum 2 Cruz de Tejeda, Gran Canaria 080414 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum ptarmicaeflorum 3 Cruz de Tejeda, Gran Canaria 080419 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum ptarmicaeflorum 4 Cruz de Tejeda, Gran Canaria 080419 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum ptarmicaeflorum 5 Cruz de Tejeda, Gran Canaria 080419 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum ptarmicaeflorum 6 Cruz de Tejeda, Gran Canaria 080419 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum vulgare 3 Lund Sk 120722 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum vulgare 4 Lund Sk 120722 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum vulgare 5 Lund Sk 120722 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum coccineum 1 Copenhagen Bot Garden 130614 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum coccineum 2 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum coccineum 6 Bergianska 060620 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Tanacetum corymbosum 2 Roma Sockerbrukspark, Gotland 980726 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum corymbosum 3 Roma Sockerbrukspark, Gotland 070804 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum corymbosum 8 Moneval NE of Grenoble FR 150705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum corymbosum 9 Moneval NE of Grenoble FR 150705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum ferulaceum var ferulaceum 3 Santa Lucia de Tirajana, Gran Canaria 080413 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum ferulaceum var latipinnum 1 Anden Verde, Gran Canaria 080410 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum parthenium 2 Lund Sk 120726 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum ptarmicaeflorum 1 Cruz de Tejeda, Gran Canaria 080414 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum vulgare 1 Lund Sk 120722 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Tanacetum vulgare 2 Lund Sk 120722 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).