'Algum trees' in the Bible

Send me also cedar-trees, fir-trees, and algum-trees, out of Lebanon; for I know that thy servants know how to cut timber in Lebanon: and, behold, my servants shall be with thy servants,

And the servants also of Huram, and the servants of Solomon, that brought gold from Ophir, brought algum-trees and precious stones.

And the king made of the algum-trees terraces for the house of Jehovah, and for the king's house, and harps and psalteries for the singers: and there were none such seen before in the land of Judah.