Nemesia caerulea

Nemesia caerulea, the Drakensberg nemesia, is a slender perennial reaching about 60 cm in height. The dark green, serrated leaves are ovate, tapering to acute tips. 

The plant bears scented, blue or purple flowers in erect leafy racemes from leaf axils. A plant in bloom may be densely covered in flowers. The corollas are two-lipped in Nemesia fashion, without the often seen yellow bumps on the lower lip. Flowering happens in midspring and early summer.

The species distribution is in KwaZulu-Natal, the northeast of the Eastern Cape, the eastern Free State and Lesotho. 

The habitat is montane grassland among rocks to elevations around 2900 m. The habitat population is deemed of least concern early in the twenty first century (Manning, 2009; Pooley, 1998; Wikipedia; iNaturalist; http://redlist.sanbi.org).