I
> suspect this was the biggest source of plant material in our
> diet in the paleo era. During the long winters, where else
> would they have gotten it?

The Inuit do eat in the contents of caribou stomach. I don't know of any one
else offhand.  but you imply they need to. why?

Highlanders did not grow oats until the 15th-16th century, when they were
banned from hunting boar and deer by the new english aristocracy.

andrew