Whitebark Pine Apinus albicaulis (Engelmann) Rydberg

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"Trees to 21 m tall; trunk to 1.5 m diam., straight to twisted and contorted; crown conic, becoming rounded to irregularly spreading. Bark pale gray, from a distance appearing whitish to light gray and smooth, in age separating into thin plates. Branches spreading to ascending, often persistent to trunk base; twigs stout, pale red-brown, with light brown, often glandular pubescence, somewhat roughened by elevated scars, aging gray to pale gray-brown.

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