Indentification help

Hi all, looking for some help identifying these please.  I found these in a tray hidden behind some bushes at work, they were dry and nearly dead. I brought them home and repotted individually and brought them back. They are now showing new growth and doing well. 

Sorry only have photo of plants at minute, no flowers.

I am pretty sure I have seen these before and think they get a small cluster of purple flowers in the centre. Can anyone tell me what these are called so that I can look up the info on them.  Thank you.

Regrds,

Jay

Last edited: 27 May 2017 13:37:03