'Algum trees' in the Bible

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

The servants also of Huram, and the servants of Solomon, who brought gold from Ophir, brought algum trees and precious stones.

The king made of the algum trees terraces for the house of the LORD, and for the king's house, and harps and stringed instruments for the singers: and there were none like these seen before in the land of Judah.