Searching for violets

Henckelia puncticulata is found only on steep banks around SE Johore area. Although locally common, globally it is very vulnerable to extinction as its habitat is not protected and subjected to haphazard and ill-planned developments. Where we found it, the plants are forming a vertical carpet covering a steep bank near the river. A bulldozer was noisily doing its damage just across the river as we took photos.
This Asian relative of the African violet does look like its famous cousin, albeit with variegated leaves. I think it should have a place in horticulture.