Incarvillea arguta 1 between Benzilan and Baimashan, Yunnan 110710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Incarvillea arguta 2 between Benzilan and Baimashan, Yunnan 110710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Incarvillea arguta 3 between Benzilan and Baimashan, Yunnan 110710 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Incarvillea arguta 4 Dali, Yunnan 110706 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Incarvillea arguta 5 Kunming Bot Garden 110705 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Incarvillea delavayi 3 Lund Bot Garden 080612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Incarvillea delavayi 4 Lund Bot Garden 080612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Incarvillea mairei 2 Lund Bot Garden 130523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Incarvillea mairei 3 Lund Bot Garden 130523 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Incarvillea olgae 5 Lund Bot Garden 190720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Incarvillea olgae 6 Lund Bot Garden 190720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Incarvillea olgae 7 Lund Bot Garden 190720 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Incarvillea sinensis ssp variabilis 1 Bergianska 060821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Incarvillea sinensis ssp variabilis 2 Bergianska 060821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Incarvillea sinensis ssp variabilis 3 Bergianska 060821 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Incarvillea younghusbandii 1 Copenhagen Bot Garden 130604 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Incarvillea delavayi 1 Lund Bot Garden 130527 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Incarvillea delavayi 2 Lund Bot Garden 080612 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

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

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

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

Incarvillea younghusbandii 4 Copenhagen Bot Garden 150626 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Incarvillea younghusbandii 5 Copenhagen Bot Garden 150626 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

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

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

Incarvillea zhongdianensis 3 between Lijiang and Shangri-la, Yunnan 110708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Incarvillea zhongdianensis 4 between Lijiang and Shangri-la, Yunnan 110708 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).