This plant was on a shady windowsill at work. I propogated it by splitting a clump off, so far its done well it produces light purple bell flowers in summer. What is it??
I believe it is Oxalis triangularis (maybe additionally 'Purpurea'). See several pix at this site: http://www.pacificbulbsociety.org/pbswiki/index.php/SouthAmericanOxalis