Nelsonia is a genus of plants in the family Acanthaceae. They can be found in tropical: Africa (including Madagascar), Latin America, south-east Asia and Australia.
(Wikipedia)
Nelsonia canescens is a herbaceous plant species in the family Acanthaceae, with a substantial number of similar plant specimens now identified as synonyms.
(Wikipedia)
Khadia beswickii is a species of plant in the Aizoaceae family. It is endemic to South Africa. Its natural habitat is subtropical or tropical dry lowland grassland. It is threatened by habitat loss.
(Wikipedia)