The word(s) "tree" appears 42 time(s) in 40 verse(s) in Quran in Muhammad Pickthal translation.

(1) And We said: O Adam! Dwell thou and thy wife in the Garden, and eat ye freely (of the fruits) thereof where ye will; but come not nigh this tree lest ye become wrong-doers.

(2) Would any of you like to have a garden of palm-trees and vines, with rivers flowing underneath it, with all kinds of fruit for him therein; and old age hath stricken him and he hath feeble offspring; and a fiery whirlwind striketh it and it is (all) consumed by fire. Thus Allah maketh plain His revelations unto you, in order that ye may give thought.

(3) And (unto man): O Adam! Dwell thou and thy wife in the Garden and eat from whence ye will, but come not nigh this tree lest ye become wrong-doers.

(4) Then Satan whispered to them that he might manifest unto them that which was hidden from them of their shame, and he said: Your Lord forbade you from this tree only lest ye should become angels or become of the immortals.

(5) Thus did he lead them on with guile. And when they tasted of the tree their shame was manifest to them and they began to hide (by heaping) on themselves some of the leaves of the Garden. And their Lord called them, (saying): Did I not forbid you from that tree and tell you: Lo! Satan is an open enemy to you?

(6) Seest thou not how Allah coineth a similitude: A goodly saying, as a goodly tree, its root set firm, its branches reaching into heaven,

(7) And the similitude of a bad saying is as a bad tree, uprooted from upon the earth, possessing no stability.

(8) He it is Who sendeth down water from the sky, whence ye have drink, and whence are trees on which ye send your beasts to pasture.

(9) And thy Lord inspired the bee, saying: Choose thou habitations in the hills and in the trees and in that which they thatch;

(10) And (it was a warning) when we told thee: Lo! thy Lord encompasseth mankind, and We appointed the sight which We showed thee as an ordeal for mankind, and (likewise) the Accursed tree in the Qur'an. We warn them, but it increaseth them in naught save gross impiety.