I have two colors here in my part of north central Texas. They seem the same except one is bright pink like the photo and the other is bright yellow. On both, the stems, runners or whatever are spiny. Not thorny which might detach and embed in the skin, just rough like extremely coarse sandpaper. The blooms and plant seem attractive to me and I've considered trying them in hanging baskets but never have followed through. I only ever heard them called 'sensitive plants'. Here it's found growing in poor, thin soil over limestone. I'm interested in the suggestions because I don't know the id here either.