Nemesia fruticans produces summer flowers that are often mauve, but may also be white or pink, with a prominent yellow hump or protuberance on the lower lip of each flower. It grows naturally in a big part of South Africa from the Western Cape up to the Limpopo Province. The plant is a small shrub with erect stems from a woody base and a woody taproot. Although it is a perennial it seems that gardeners may plant it annually.
There are about seventy Nemesia species belonging to this South African endemic genus. There is, however, such a big international trade in Nemesias, mainly the enhanced flower cultivars produced horticulturally, that they are entrenched almost globally as world garden citizens. There also seems to be ambiguity about the delineation or definition of this species in the literature that will hopefully be cleared up soon (www.plantzafrica.com).