Zukum[edit] Ödmann and Rosenmüller thought that the pressed juice of the fruit of the zukum-tree (Eleagnus angustifolius L.) or the myrobalanus of the ancients, is the substance denoted; but Rosenmüller, in another place, mentioned the balsam of Mecca (Amyris opobalsamum L.) as being probably the tsori. Zukum oil was in very high esteem among the Arabs, who even preferred it to the balm of Mecca, as being more efficacious in wounds and bruises. Maundrell found zukum-trees near the Dead Sea. Hasselquist and Pococke found them especially in the environs of Jericho. In the 19th century, the only product in the region of Gilead which had any affinity to balm or balsam was a species of Eleagnus