Streptocarpus 1a Copenhagen Bot Garden 120926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus 1b Copenhagen Bot Garden 120926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus 1c Copenhagen Bot Garden 120926 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus 2 Dept of Botany, Stockholm University 030507 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus caulescens 1 Lund Bot Garden 130214 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus cf cooperi 4 Bergianska, Stockholm 131128 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus hilsenbergii 2 Ranomafana Nat Park, Madagascar 191014 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus hilsenbergii 4 Ranomafana Nat Park, Madagascar 191014 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus hilsenbergii 5 Ranomafana Nat Park, Madagascar 191014 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus kewensis x rexii 1 Lund Bot Garden 130214 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus kewensis x rexii 2 Lund Bot Garden 130214 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus kewensis x rexii 3 Lund Bot Garden 130214 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus nobilis 1 Lund Bot Garden 090213 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus nobilis 2 Lund Bot Garden 090213 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus saxorum 1 Lund Bot Garden 130906 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus saxorum 3 Lund Bot Garden 130906 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus thompsonii 1 Lund Bot Garden 090213 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus thompsonii 2 Lund Bot Garden 090213 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus thompsonii 3 Lund Bot Garden 090213 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus thompsonii 4 Lund Bot Garden 090213 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus thompsonii 5 Lund Bot Garden 090213 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus velutinus 1 Copenhagen Bot Garden 130116 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus velutinus 2 Copenhagen Bot Garden 130116 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus velutinus 3 Copenhagen Bot Garden 130116 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus 3a Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus 3b Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus 3c Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus 3d Copenhagen Bot Garden 160504 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus caulescens 2 Lund Bot Garden 130214 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus cf cooperi 1 Bergianska, Stockholm 131128 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus cf cooperi 2 Bergianska, Stockholm 131128 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus cf cooperi 3 Bergianska, Stockholm 131128 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus cf cooperi 5 Bergianska, Stockholm 131128 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus cf cooperi 6 Bergianska, Stockholm 131128 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus cf cooperi 7 Bergianska, Stockholm 131128 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus hilsenbergii 1 Ranomafana Nat Park, Madagascar 191014 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus hilsenbergii 3 Ranomafana Nat Park, Madagascar 191014 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus kewensis x rexii 4 Lund Bot Garden 130214 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus nobilis 3 Lund Bot Garden 090213 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus nobilis 4 Lund Bot Garden 090213 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Streptocarpus saxorum 2 Lund Bot Garden 130906 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).