These are the first flowers on a woody perennial started from seed obtained in a GW seed trade :-). I have waited 5 years and I am very excited to welcome these large beautiful flowers.
Now, that's one very beautiful flower, thanks for sharing the photo :)
There's a few streets in my area lined with Bauhinia purpea. They look amazing for a month or so, especially in the wet years, but (like redbud) are rather nondescript otherwise. Still, a very well behaved street tree -- no sidewalk cracking, massive pollen loads, bug infestations or rampant invasiveness.