This is one of those species that, in the past, some have struggled with in terms of identification. It is purple-flowered, long pedunculate, and produces elliptical/cylindrical capsules. Sounds a lot like Ruellia tuberosa and Ruellia simplex, right? You wouldn’t be crazy if you said so.
Yet: they are different. Not by tremendous leaps and bounds, but… different.
Ruellia ciliatiflora used to be known by its synonym, Ruellia lorentziana, in the southeastern USA, where it has become weedy in parts. If you grow this in your greenhouses, CAREFUL. It might take over! Its native range is entirely South American.
Wild collected (which is cool! I’ve only ever seen it in greenhouse cultivation), Bolivia, Darwin Initiative Project #162/11/010; Photo by John Wood