Pseuderanthemum alatum 3 Lund Bot Garden 120908 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Pseuderanthemum seticalyx Bot Dept, Stockholm Univ 041029 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Pseuderanthemum alatum 1 Lund Bot Garden 120908 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Pseuderanthemum alatum 2 Lund Bot Garden 120908 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Pseuderanthemum alatum 4 Lund Bot Garden 120908 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Pseuderanthemum cf crenulatum 1 Khao Luang National Park, Thailand 860302 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Pseuderanthemum cf crenulatum 2 Khao Luang National Park, Thailand 860302 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Pseuderanthemum cf crenulatum 3 Pasoh Forest Reserve, Malaysia 860314 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Pseuderanthemum graciliflorum Khao Luang National Park, Thailand 860302 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).