vtpeacenik (of Flickr) says of the unknown flower:
I checked a book and this seems to be either a Three-leaved False Solomon's-Seal...otherwise known as Smilacina Trifolia. That has 6-pointed flowers. OR...Wild Lily-of-the-Valley, otherwise known as Canadian Mayflower.That one has 4-pointed flowers.Thank you, vt!
Both flowers were found on the Appalachian Trail in Killington, VT.