'Algum trees' in the Bible

And also, servants of Huram, and servants of Solomon, who brought in gold from Ophir, have brought in algum-trees and precious stone.

And the king maketh the algum-trees staircases for the house of Jehovah, and for the house of the king, and harps and psalteries for singers; and there have been none seen like these before in the land of Judah.