A NEW ORIGANUM FROM THE ISTHMIC DESERT (SINAI): ORIGANUM ISTHMICUM SP.N.

Abstract A new species of Origanum (of Sect. Euoriganum Bth.) from the northern Isthmic Desert (Sinai) confined to hard limestone cliffs, 500–600 m above sea level is described. It differs from other related species of the above section by its solitary axillary flowers and by its leaf-like bracts.