'Myrtle trees' in the Bible

"I saw by night, and lo, there sat one upon a red horse, and stood still among the Myrtle trees, that were beneath upon the ground: and behind him were there red, speckled and white horses.

And the man that stood among the Myrtle trees, answered and said, 'These are they, whom the LORD hath sent to go through the world.'

And they answered the angel of the LORD, that stood among the myrtle trees, and said, 'We have gone through the world: and behold all the world dwell at ease, and are careless.'