Table Mountain National Park is home to ~1,500 plant species and is part of the broader Cape Floral Region. Covering less than 0.5% of the area of Africa, but home to nearly 20% of the continent’s plant species, the Cape Floral Region has the highest density of plant species in the world. Over 9,000 species grow in an area ~90,000km2, almost 70% of which don’t occur naturally anywhere else on Earth.

Sources: one, two