Zohary (Plants of the Bible. Cambridge University Press, 1982) confidently equates the ‘armon of Ezekiel 31:8 with Oriental Plane Platanus orientalis, mostly on the basis of the fact that Arabs call it dilba, which is derived from the Aramaic. The name ‘armon may come from the Hebrew word ‘erom meaning “naked,” referring to the way the bark peels off, leaving the seemingly naked trunk.

Plane trees may have been abundant in the past, if the common name “Wadi Dilb” is related to the Arabic dilba. In the present day, plane trees are fairly common in the upper Jordan Valley and its tributaries. It is widespread throughout the eastern Mediterranean region and in the hills of Iraq and Iran.

The plane tree is large and wide-spreading, with big branches and lobed, hairy leaves shaped like a hand. In Israel it can reach a height of 20 meters (66 feet) and the trunk 50 centimeters (2 feet) in diameter. Its flowers are small and green. The small seeds are contained in round, bristly fruits, which, when open, release the seeds with plumes that carry them great distances on the wind.

In Genesis 30:37 Jacob presumably chose to use branches of the plane tree because its bark can easily be peeled off in strips, exposing the white or yellow inner layer. In ancient times the plane tree was praised as a shade tree by the Greeks, Romans, and Persians. Ezekiel 31:8 associates planes, cedars, and beroshim (“cypresses” or “Grecian junipers”) with the “garden of God,” suggesting special beauty. In Sirach 24:14 wisdom is compared to the plane as a beautiful, big tree.

True plane trees are limited to Europe and North America, apart from the species that grows in the eastern Mediterranean region and Iran. (A wild maple tree in Britain is misleadingly called a “plane.”) Translators in Asia, Latin America, and Africa will have no local species available for the story of Jacob’s goat-breeding experiment in Genesis 30:37 and will have to consider a transliteration in keeping with the other trees mentioned there (poplar and almond). However, the passage in Ezekiel 31:8, where the plane is used in a metaphorical context, leaves room for local equivalents. Egypt, in this passage, is compared to a mighty cedar, against which other trees, such as the plane and the fir, do not match up. Rendering “plane” here will depend on what the translator does with the other trees.

Source: Each According to its Kind: Plants and Trees in the Bible (UBS Helps for Translators)