Posted: 04/01/2015 at 09:04
sounds like Triquetrum to me. A pain. Don't have it here but a friend has it amongst Her lavendar hedge. Not sure glyphosate is very effective ....it will kill the plants you see but persistent treatment is needed. Digging out whole clumps with soil intact is effective before it flowers again.
Get rid of it as soon as you see it or your problems with it will become much worse