House plant question

I've had this plant for 15 years and still don't know what kind it is. It's been erratic, from looking fairly healthy to pathetic, until recently when I repotted it into a bigger container. Since then it's grown to twice its original height and has had twice the number of blooms. I'm amazed the difference repotting has made. :smilie:

Anyhow, anybody know what kind it is?

 

I had one its called a shamrock. you can cut the rootbound plant into quarters and make 4 potted plants.

well, I called it a shamrock plant anyhow.

 

The leaves do favor clover except much bigger.

thanks