Crotalaria 1f La Mira near Ifaty, Madagascar 191009 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria capensis 1 Bontebok National Park, Swellendam, Western Cape, South Africa 161001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria capensis 1 Lund Bot Garden 141001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria capensis 10 Bontebok National Park, Swellendam, Western Cape, South Africa 161001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria capensis 12 Bontebok National Park, Swellendam, Western Cape, South Africa 161001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria capensis 13 Kirstenbosch Bot Garden, South Africa 161006 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria capensis 14 Kirstenbosch Bot Garden, South Africa 161006 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria capensis 15 Kirstenbosch Bot Garden, South Africa 161006 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria capensis 3 Lund Bot Garden 141001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria capensis 5 Lund Bot Garden 141001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria capensis 7 Lund Bot Garden 141001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria capensis 8 Lund Bot Garden 141001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria capensis 9 Lund Bot Garden 141001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria cunninghamii 3 (cult) Western Flora, Western Australia 110924 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria cunninghamii 4 (cult) Western Flora, Western Australia 110924 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria cunninghamii 5 (cult) Western Flora, Western Australia 110924 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria 1a La Mira near Ifaty, Madagascar 191009 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria 1b La Mira near Ifaty, Madagascar 191009 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria 1c La Mira near Ifaty, Madagascar 191009 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria 1d La Mira near Ifaty, Madagascar 191009 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria 1e La Mira near Ifaty, Madagascar 191009 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria 1g La Mira near Ifaty, Madagascar 191009 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria 1h La Mira near Ifaty, Madagascar 191009 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria 1i La Mira near Ifaty, Madagascar 191009 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria 1j La Mira near Ifaty, Madagascar 191009 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria 1k La Mira near Ifaty, Madagascar 191009 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria capensis 11 Bontebok National Park, Swellendam, Western Cape, South Africa 161001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria capensis 2 Lund Bot Garden 141001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria capensis 4 Lund Bot Garden 141001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria capensis 6 Lund Bot Garden 141001 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria cunninghamii 1 (cult) Western Flora, Western Australia 110924 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria cunninghamii 2 (cult) Western Flora, Western Australia 110924 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria excisa 1 Contreberg Wild Flower Reserve, Western Cape, South Africa 100908 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria excisa 2 Contreberg Wild Flower Reserve, Western Cape, South Africa 100908 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria excisa 3 Contreberg Wild Flower Reserve, Western Cape, South Africa 100908 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria excisa 4 Contreberg Wild Flower Reserve, Western Cape, South Africa 100908 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria excisa 5 Contreberg Wild Flower Reserve, Western Cape, South Africa 100908 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Crotalaria excisa 6 Contreberg Wild Flower Reserve, Western Cape, South Africa 100908 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).