'Tree' in the Bible

Saul was staying in the outskirts of Gibeah under a pomegranate tree in Migron; and with him were about six hundred men,

But Saul heard that David and the men who were with him had been discovered. Now Saul was in Gibeah, sitting under the tamarisk tree on the high place with his spear in his hand, and all his servants were standing around him.

They took their bones and buried them under the tamarisk tree at Jabesh, and fasted [as a sign of mourning and respect] for seven days.