Sidra or Christ's Thorn Jujube (Ziziphus spina-christi, german: Syrischer Christusdorn, french: Épine du Christ), the national tree of Qatar. (878k)
Here are the pictures of Christ's Thorn Jujube (Ziziphus spina-christi) with links to the pages on which they appear, links to the full sized picture, and the description of the picture with links to the entry in iNaturalist (inaturalist.org)
All pictures are © Dr. Günther Eichhorn, unless otherwise noted.
Qatar Nature
Dr. Günther Eichhorn Travel Website
Soaring website