Rhododendron: Gurans in Nepali

I have three posts on general information on Rhododendron. If you are interested on scientific nomenclature, here is it.
Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Order: Ericales
Family: Ericaceae
Genus: Rhododendron L.
Species: (depends, e.g., arboreum)

Local name: Lali gurans in case of the national flower of Nepal which looks similar to the first picture in structure but has the colour like to the second picture.

I came to know that Rhododendron is being protected and conserved through local initiatives. Click here to see the activities of that project and to know the names of different Rhododendron flowers with the help of picture.