Gentiana 1a Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 1b Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 1c Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 1d Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 1f Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 1g Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 2a Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 2c Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 3a Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 3b Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 4d Shika, Yunnan 110712 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 4e Shika, Yunnan 110712 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 4g Shika, Yunnan 110712 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 4h Shika, Yunnan 110712 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 5a between Benzilan and Shangri-la, Yunnan 110711 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 5b between Benzilan and Shangri-la, Yunnan 110711 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 5c between Benzilan and Shangri-la, Yunnan 110711 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 6a Lund Bot Garden 150713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 6b Lund Bot Garden 150713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 7d Bot Garden, Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana acaulis 1 Stubnerkogel, Austria 080702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana acaulis 2 Stubnerkogel, Austria 080702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana acaulis 3 Schlossalm, Austria 080703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana acaulis 4 Schlossalm, Austria 080703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana acaulis 5 Lund Bot Garden 080508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana acaulis 9 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana arethusae 1 Bot Garden, Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana arethusae 2 Bot Garden, Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana asclepiadea 7 (cult) Brunnby Sk 120828 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana atuntsiensis Yunnan 1107 - Photo: Lennart Nelson (© 2014 Jan Thomas Johansson).

Gentiana bavarica 2 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana bavarica 3 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana bavarica 6 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana bavarica 7 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana bhutanica 1 Copenhagen Bot Garden 150812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana bhutanica 2 Copenhagen Bot Garden 150812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana bhutanica 3 Copenhagen Bot Garden 150812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana bhutanica 4 Copenhagen Bot Garden 150812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana brachyphylla 1 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana brachyphylla 2 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana brachyphylla 7 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana brachyphylla 8 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cachemirica 2 Lund Bot Garden 190720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cachemirica 3 Lund Bot Garden 190720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cachemirica 4 Lund Bot Garden 190720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cf angustifolia 1 the Grabadito area, southern Pyrenees, N Spain 180524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cf decumbens 1 Lund Bot Garden 150713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cf decumbens 2 Lund Bot Garden 150713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cf decumbens 3 Lund Bot Garden 150713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana clusii 3 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana clusii 4 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana crassicaulis 1 Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana crassicaulis 2 Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana crassicaulis 3 Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana crassicaulis 4 Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana crassicaulis 5 NW of Shangri-la, Yunnan 110708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cruciata 1 between Slutiski and Verveli near Daugava, Latvia 100711 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cruciata 10 N of La Vachette FR 150709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cruciata 11 N of La Vachette FR 150709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cruciata 12 N of La Vachette FR 150709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cruciata 13 N of La Vachette FR 150709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cruciata 14 N of La Vachette FR 150709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cruciata 15 N of La Vachette FR 150709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cruciata 3 between Slutiski and Verveli near Daugava, Latvia 100711 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cruciata 4 between Slutiski and Verveli near Daugava, Latvia 100711 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cruciata 5 between Slutiski and Verveli near Daugava, Latvia 100711 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cruciata 6 between Slutiski and Verveli near Daugava, Latvia 100711 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cruciata 7 between Slutiski and Verveli near Daugava, Latvia 100711 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cruciata 8 between Slutiski and Verveli near Daugava, Latvia 100711 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cruciata 9 between Slutiski and Verveli near Daugava, Latvia 100711 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana dahurica 1 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana dahurica 2 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana dahurica 3 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana dahurica 4 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana dahurica 5 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana dahurica 6 Copenhagen Bot Garden 130821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana dinarica 3 Lund Bot Garden 110429 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana dinarica 4 Lund Bot Garden 110429 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana globosa 2 Yunnan 1107 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana gracilipes 2 Lund Bot Garden 150713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana gracilipes 3 Lund Bot Garden 150713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana gracilipes 4 Lund Bot Garden 150713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana macrophylla 1 Lund Bot Garden 150713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana macrophylla 2 Lund Bot Garden 150713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana macrophylla 3 Lund Bot Garden 150713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana macrophylla 4 Lund Bot Garden 150713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana nivalis 4 Lullihatjårro, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana nivalis 5 Lullihatjårro, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana nivalis 6 Lullihatjårro, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana nivalis 7 Tjietnjalisjaure, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana orbicularis 3 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana orbicularis 4 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana pneumonanthe 10 Skanörs Ljung Sk 130804 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana pneumonanthe 11 Skanörs Ljung Sk 130804 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana pneumonanthe 12 Skanörs Ljung Sk 130804 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana pneumonanthe 13 Skanörs Ljung Sk 130804 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana pneumonanthe 14 Skanörs Ljung Sk 130804 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana pneumonanthe 3 Skanörs Ljung Sk 130804 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana pneumonanthe 7 Skanörs Ljung Sk 130804 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana pneumonanthe 8 Skanörs Ljung Sk 130804 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana pneumonanthe 9 Skanörs Ljung Sk 130804 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana punctata 3 Schlossalm, Austria 080703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana punctata 8 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana purpurea 11 Bot Garden, Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana purpurea 15 Bot Garden, Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana purpurea 2 Bjåen, Bykle, Aust-Agder, Norway 0607 - Photo: Erling Jirle (© 2014 Jan Thomas Johansson).

Gentiana purpurea 5 Bjåen, Bykle, Aust-Agder, Norway 0607 - Photo: Erling Jirle (© 2014 Jan Thomas Johansson).

Gentiana purpurea 6 Bjåen, Bykle, Aust-Agder, Norway 0607 - Photo: Erling Jirle (© 2014 Jan Thomas Johansson).

Gentiana purpurea 7 Bjåen, Bykle, Aust-Agder, Norway 0607 - Photo: Erling Jirle (© 2014 Jan Thomas Johansson).

Gentiana purpurea 8 Bjåen, Bykle, Aust-Agder, Norway 0607 - Photo: Erling Jirle (© 2014 Jan Thomas Johansson).

Gentiana saponaria 1 Copenhagen Bot Garden 080710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

Gentiana saponaria 3 Copenhagen Bot Garden 080710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana scabra 12 (cult) Lund Sk 160905 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana scabra 13 (cult) Lund Sk 160905 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana scabra 6 (cult) Lund Sk 121018 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana scabra 7 (cult) Lund Sk 121018 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana scabra 8 (cult) Lund Sk 121018 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana scabra 9 (cult) Lund Sk 160905 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana septemfida 1 Copenhagen Bot Garden 130807 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana septemfida 4 Lund Bot Garden 070718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana septemfida 6 Copenhagen Bot Garden 160713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana septemfida 7 Copenhagen Bot Garden 160713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana tibetica 2 Copenhagen Bot Garden 150812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana tibetica 3 Copenhagen Bot Garden 150812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana verna 10 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana verna 12 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana verna 2 Stubnerkogel, Austria 080702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana verna 3 Stubnerkogel, Austria 080702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana verna 4 Stubnerkogel, Austria 080702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana verna 5 Stubnerkogel, Austria 080702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana verna 6 Nassfeld, Austria 080701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana verna 7 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana verna 8 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana verna 9 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana wutaiensis 1 Copenhagen Bot Garden 140625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana wutaiensis 2 Copenhagen Bot Garden 140625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana wutaiensis 5 Copenhagen Bot Garden 150812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana wutaiensis 6 Copenhagen Bot Garden 150812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 1e Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 2b Napa Hai, Yunnan 110709 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 4a Shika, Yunnan 110712 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 4b Shika, Yunnan 110712 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 4c Shika, Yunnan 110712 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 4f Shika, Yunnan 110712 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 5d between Benzilan and Shangri-la, Yunnan 110711 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 7a Bot Garden, Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 7b Bot Garden, Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 7c Bot Garden, Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 8a Bot Garden, Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana 8b Bot Garden, Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana acaulis 10 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana acaulis 11 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana acaulis 6 Lund Bot Garden 080508 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana acaulis 7 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana acaulis 8 Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana arethusae 3 Bot Garden, Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana asclepiadea 1 Lund Bot Garden 130816 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana asclepiadea 2 Lund Bot Garden 130816 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana asclepiadea 3 Lund Bot Garden 130816 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana asclepiadea 4 (cult) Brunnby Sk 080815 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana asclepiadea 5 (cult) Brunnby Sk 080815 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana asclepiadea 6 (cult) Brunnby Sk 080815 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana bavarica 1 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana bavarica 4 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana bavarica 5 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana brachyphylla 3 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana brachyphylla 4 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana brachyphylla 5 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana brachyphylla 6 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana brachyphylla 9 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cachemirica 1 Lund Bot Garden 190720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cf alpina 1 Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cf alpina 2 Chamrousse FR 150703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cf angustifolia 2 the Grabadito area, southern Pyrenees, N Spain 180524 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana clusii 1 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana clusii 2 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana cruciata 2 between Slutiski and Verveli near Daugava, Latvia 100711 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana dinarica 1 Lund Bot Garden 110429 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana dinarica 2 Lund Bot Garden 110429 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana globosa 1 Yunnan 1107 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana gracilipes 1 Lund Bot Garden 150713 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana nivalis 1 Lullihatjårro, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana nivalis 2 Lullihatjårro, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana nivalis 3 Lullihatjårro, Torne Lappmark 110728 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana orbicularis 1 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana orbicularis 2 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana pneumonanthe 1 Skrea, Halland 800720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana pneumonanthe 15 Skanörs Ljung Sk 130804 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana pneumonanthe 16 Skanörs Ljung Sk 130804 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana pneumonanthe 17 Skanörs Ljung Sk 160820 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana pneumonanthe 18 Skanörs Ljung Sk 160820 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana pneumonanthe 19 Skanörs Ljung Sk 160820 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana pneumonanthe 2 Skanörs Ljung Sk 130804 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana pneumonanthe 20 Skanörs Ljung Sk 160820 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana pneumonanthe 4 Skanörs Ljung Sk 130804 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana pneumonanthe 5 Skanörs Ljung Sk 130804 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana pneumonanthe 6 Skanörs Ljung Sk 130804 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana punctata 1 Schlossalm, Austria 080703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana punctata 10 Mt Voras (Kajmakcalan), N Greece 180701 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana punctata 2 Schlossalm, Austria 080703 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana punctata 4 Malá studená dolina, Slovakia 950628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana punctata 5 Malá studená dolina, Slovakia 950628 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana punctata 6 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana punctata 7 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana punctata 9 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana purpurea 1 Bjåen, Bykle, Aust-Agder, Norway 0607 - Photo: Erling Jirle (© 2014 Jan Thomas Johansson).

Gentiana purpurea 10 Bot Garden, Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana purpurea 12 Bot Garden, Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana purpurea 13 Bot Garden, Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana purpurea 14 Bot Garden, Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana purpurea 16 Bot Garden, Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana purpurea 3 Bjåen, Bykle, Aust-Agder, Norway 0607 - Photo: Erling Jirle (© 2014 Jan Thomas Johansson).

Gentiana purpurea 4 Bjåen, Bykle, Aust-Agder, Norway 0607 - Photo: Erling Jirle (© 2014 Jan Thomas Johansson).

Gentiana purpurea 9 Bot Garden, Tromsø, Norway 220719 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana scabra 1 (cult) Lund Sk 121018 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana scabra 10 (cult) Lund Sk 160905 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana scabra 11 (cult) Lund Sk 160905 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana scabra 14 (cult) Lund Sk 160905 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana scabra 2 (cult) Lund Sk 121018 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana scabra 3 (cult) Lund Sk 121018 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana scabra 4 (cult) Lund Sk 121018 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana scabra 5 (cult) Lund Sk 121018 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana septemfida 2 Lund Bot Garden 070718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana septemfida 3 Lund Bot Garden 070718 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana septemfida 5 Copenhagen Bot Garden 130807 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana tibetica 1 Copenhagen Bot Garden 150812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana verna 1 Stubnerkogel, Austria 080702 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana verna 11 between Col du Lautaret and Col du Galibier FR 150708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana verna 13 Black head, Clare, Ireland 170529 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana wutaiensis 3 Copenhagen Bot Garden 140625 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Gentiana wutaiensis 4 Copenhagen Bot Garden 150812 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).