I love white flowers for shade, they show up well.
I got this in trade about a year ago but it hasn't done much. Not sure exactly what it is. Here's the main pieces, in a pot, that seem stunted.
And here's 2 cuttings from it from about a month ago. Will observe what should be its' regular habit once it gets going. (They're on either side of the Cymbalaria, click to get the bigger one that shows the mystery Callisia or Tradescantia.)
Edited to add, according to my plant list on here, I have Callisia soconuscensis. (Edited, used to say C. congesta.) That may be what this is. Glasshouse Works pic:
http://www.glasshouseworks.com...