Trees, to 20 m tall; bark gray or gray-brown.
乔木，对20米高；树皮灰色的或灰棕色。
Trees to 10 m tall; bark gray or gray-brown, smooth.
乔木给10米高；树皮灰色的或灰棕色，平滑。
Any of several5-needled pines with white wood and smooth usually light gray bark when young; especially the eastern white pine.
白色木质且光滑的一种五针松，幼树树皮呈浅灰色；特别指东部白松。
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