plants in the sahara desert. tassili n'ajjer national park, algeria,

bush bushy bushes plant plants zilla zilla spinosa spiny flora crucifer brassicaceae desert deserted environment flower flowering spring sand sandy dune tadrart tassili n’ajjer najjer national park sahara algeria africa djanet sandstone thorn thornbush thorny shrub spine prickle nature wildflowers wild climate vegetation botanical dry green grow growing growth dehydration scenery mountain outdoor outside view landscape endemic