On of my neighbors gave me this bush and she said if was Threnga but we can not spell it so if anyone can please let me know.
Check out Galphimia. Apparently this is sometimes confused with Thryallis. Perhaps, sounds a bit like the name you were given of Threnga. http://en.wikipedia.org/wiki/Galphimia http://images.google.com/images?q=g...1I7SUNA_en-GB&um=1&ie=UTF-8&sa=N&hl=en&tab=wi