Pinus bhutanica, which may be called the Bhutan white pine, is a tree restricted to Bhutan and adjacent parts of northeast India (Arunachal Pradesh) and southwest China (Yunnan and Tibet).
[1] Along with the related Pinus wallichiana it is a constituent of lower altitude blue pine forests.
It differs from P. wallichiana in the much longer, strongly drooping needles, and the cones being slightly smaller and red-brown, rather than yellow-buff, when mature.
It is also adapted to generally warmer, wetter climates at lower altitudes, with an intense summer monsoon.
Despite the two being closely related and at least occasionally growing together, no hybrids or intermediates have ever been reported.