whitebark pine

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A prostrate shrub or tree (Pinus albicaulis) native to the mountains of Pacific North America and having small, purplish-brown, ovoid seed-bearing cones.

WordNet 3.0

1. n. small pine of western North America; having smooth grey-white bark and soft brittle wood; similar to limber pine