Link to Flora of China description P. whitei is mostly found in Bhutan though also west Assam and just into Tibet. It is a very blue flowered species found in shaded places under Rhododendrons. P. bhutanica and P. whitei have been consisder both separate and the same species. Currently the Flora of China lists P. bhutanica as a synonym of P. whitei. P. bhutanica is found only in the Eastern part of the range and is represented by the first 6 images.