This is Loranthus acaciae, הרנוג השיטים, the Acacia Strap flower. It is a perennial plant with a long flowering period, from June till April. This semi parasitic mistletoe lives on various host trees, and sucks from them minerals and water. Its blossoms are very beautiful, bright red with curly petals and dark green fleshy leaves, standing out in the monochromatic desert where it lives, to be spotted from far away. Its flowers are pollinated mostly by humming birds. The seeds are very sticky and when they stuck to the beaks of the birds, they will try to get rid of them and rub them off on the hosts branches, from there the seeds will sprout, and this is another way of spreading the plant.
This parasite, which is native to Africa and Asia, can be found here in Israel near the Dead Sea in the Judean desert, in the central Negev and in the Eilat region. Those were photographed in the Eilat mountains. Eventually it will kill its host tree - and I guess it will die together with it.
Photographed by Uri Eshkar, near Eilat, two weeks ago.