Basal rosette forming species from Brazil that I wish I knew more about. Please chime in. Likes to grow in my yard in California, where I have learned that all fruits mature at once, and their explosive dehiscence is hygrochastic, i.e., they open upon wetting.
Ruellia morongii is not too distantly related to Ruellia hygrophila – from a similar part of the world. They occupy the Euruellia clade in the genus – see Tripp 2007 (Systematic Botany) for morphological features that characterize the clade.
Not vouchered, cultivated (RSABG + COLO Greenhouses), originally from Brazil; photo by Erin Tripp