Hi Ed,
Hmmm...well, again I'm no expert, but it kinda looks like U. graminifolia to me. I don't currently grow that one, so you may wanna double check with pics online to verify. I'm 100% sure it cannot be U. bifida(flowers are the wrong colour), but I don't have much experience with U. reticulata, so not too sure about that one...but my vote is that its U. graminifolia
