Abies lasiocarpa, the subalpine fir or Rocky Mountain fir, is a western North American fir tree.
It is a medium-sized evergreen conifer growing to 20 metres (66 ft) tall, exceptionally to 40–50 metres (130–160 ft) tall, with a trunk up to 1 metre (3.3 ft) across, and a very narrow conic crown. The bark on young trees is smooth, gray, and with resin blisters, becoming rough and fissured or scaly on old trees. The leaves are flat and needle-like, 1.5–3 cm (5⁄8–1 1⁄8 in) long, glaucous green above with ...
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