Bhutan pine

The needles are in bundles of five, up to 25 cm long. The cones are 12–20 cm in length, with thin scales; the seeds are 5–6 mm long, with a 20–25 mm wing. 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.

The Bhutan pine Is large in size; in winter it assumes a green colouring. These are evergreen plants, which means they keep their leaves year round. These plants have an erect development; in the lower part they usually show a bare stem, while towards the top they widen to form the crown. These plants develop like conifers. More