I already posted that plant but didn't have any suggestions about its name. Now more flowers and maybe it gets more recognisable?
I keep coming back to Gesneriaceae, but this plant seems to be much less fuzzy than most of those, and I'm not finding anything that quite fits. Maybe some type of Sinningia? Like here's a Sinningia 'Tampa Bay Beauty' that doesn't look all that fuzzy and has a similar flower arrangement. Well, the flower arrangement is more clear in this photo. But usually, if I can't find anything in the family I'm chasing down, it's the wrong family. Seeing close-up if there are hairs and what the inside of the flowers and the calyxes look like, and the underside of the leaves, might help. Or it might just help rule things out.
I went to see this plant today, am adding some not-great photos, but maybe they'll help with the inflorescence, flower details and square-ish stems. The leaves are so not-fuzzy that Gesneriaceae seems not so likely.
I was just going to suggest Ruellia elegans; now I think maybe Ruellia amoena. Here are photos from San Antonio Botanical Garden: http://botany.csdl.tamu.edu/FLORA/mi14/mi14047.jpg http://botany.csdl.tamu.edu/FLORA/mi14/mi14048.jpg Maybe that's close enough that someone will either agree or come up with what it really is. Some photos look like it, others not as much. Acanthaceae, which leads me to lots of things that don't look anything like it to me.