And more W. mirabilis

"Welwitschia mirabilis grows in isolated communities in the Namib Desert, in a narrow strip, about 1 000 km along up the coast from the Kuiseb River in central Namibia to Mossamedes in southern Angola. The plants are seldom found more than 100 to 150 km from the coast, and their distribution coincides with the fog belt. Welwitschia is still common in its habitat and shows variability, which is a sign that it is far from extinction. They are neither endangered nor rare, nevertheless they are protected by law."  Quote from this URL http://www.plantzafrica.com/plantwxyz/welwitschia.htm