Part of the Night Shade family and when it gets sun burned!
Fired Green Potatoes
http://en.wikipedia.org/wiki/Potato#Toxicity
http://drbenkim.com/green-potato-solanine-dangers.html
http://www.potatopro.com/Newsletters/20080916.htm
http://news.curiouscook.com/2006/08/green-potatoes-may-not-be-as-toxic-as.html
http://www.nytimes.com/2007/07/03/health/nutrition/03real.html?_r=5