Abies densa

Bhutan fir is in the pine or Pinaceae family and is native to central and eastern Himalayas from Nepal, Sikkim, Bhutan, and adjacent Tibet to Myanmar, at altitudes from 2800 to 3700 m. Mature trees can reach up to 60 m tall, and their crowns flatten with age.

• Needles are up to 4.5 cm long and 1–2 mm broad, flattened, blunt tipped, slightly notched, the upper surface glossy dark green with no stomata, and 2 white rows of stomata on the underside; margins of the needles are rolled-down (revolute). Needles are attached to the twig by a base resembling a small suction cup.
• The species is monoecious; pollen cones are lateral on shoots, 2–4.5 cm long, yellow with purple-blue microsporophylls; seed cones are erect, sessile (no stems), cylindrical, up to 8–12 cm long and 4–4.5 cm across, bluish gray or dark blue to bluish brown, bract length varying (may or may not be protruding). Cones fragment in the fall when mature, dispersing winged seeds.
• Shoots are greenish yellow when young, becoming gray-brown or gray when older; buds are oblong-ovoid, 4–5 mm long, resinous. Bark is scaly, becoming fissured and platy with age.