Butterfly Bush

My son got me a Butterfly bush last year for Mother's Day and when it bloomed it had little blue flowers on it that looked just like a butterfly. Well when spring came it was dead and I have somehow lost the little card that came with it with the name of the bush. I would like to replace it but I have looked all over at the stores, garden stores and on the computer but I can't find this bush or a name for it. All I find are the ones with the cone flowers.Does anyone know the name of this Buttefly bush?