Botany online 1996-2004. No further update, only historical document of botanical science!
Acacia raddiana, a characteristic acacia species especially of the Eastern Sahara. Despite the extremely tough thorns are the leaves regularly fed upon by camels. This causes the typical cone shape.
Acacia raddiana: thorns - Acacia tortilis, umbrella acacia, common species of the Southern savannahs of Africa