Thanks everyone for your comments!
You might find something similar if you explore. Some people think it could be a result of hybridisation, but as far as I know, it doesn't seem to be the case. In any case, not much has been known about these pink-flowered clones of D. rotundifolia as yet.
Exactly. But I think Kei Saito (Napraforgo) and some other people are more knowledgeable in those areas. :)