UC Santa Cruz Arboretum's exeptional South African Collection. There are a LOT of photos here: it's more of a resource than a slide show. Organized roughly around plant genera.
Melianthus major, touch-me-not, Kruidjie-roer-my-nie (Afr), Giant honey bush; much of the plant is toxic and it foliage smells like peanut butter, (foreground);
Erica canaliculata, channelled heath (left)