welwitschia mirabilis in namib desert

africa amazing ancient arid blue bole botany coniferopsida desert desolate dry dune flower forest fossil gnetales green hot landscape leaf living mirabilis namib namibia national natural nature old outdoor perennial petrified plant safari sand scenic spermatophyte spermatophytina stone sunny trunk weird welwitchia welwitschia welwitschiaceae welwitschie wild wilderness wood