This Week's Feature

mysterynut-
What is this mystery nut? I have found several in the small forest where I walk the dog. The forest, however, is predominately western hemlock, douglas fir and red cedar with the accompanying undergrowth of salal, ferns, salmonberry etc. So what could it be? I have also found this shell on the sidewalks near my place, and one actually in my garden. As the closest thing nearby is a lone holly bush, I can only assume that birds are dropping the shells or squirrels are moving them about.

After a long overseas phone call with my mum, we determined it might be a walnut of some kind, possibly a Heartnut Walnut.