I checked out a book on the local native tribes eating history in the pacific northwest. Rich with berry eating. When peoples have eaten something for long generations you learn wisdom in how to use the Berry's. The Highbush cranberry is getting hard to find. I was delighted that I had.
Most Berries are fine to eat on the trail. Go hiking with someone who knows what is there and learn one at a time. Berries like elderberries can be very bad for you unless you cook them. They are famous for wine and jam. The native peoples like to soak the highbush cranberries for long periods and then in winter eat them like pudding.On the trail I eat raspberries, black berries, Salal, wintergreen, Oregon grape, some gooseberries, service berries, salmon berries, blue berries, currents, wild strawberries (tasty but a lot of seeds), and huckleberries and thimbleberries (not my favorite).
What you never want to eat is Devils club, twin berries, bitter cherry, all the lily's,and honey suckle. There is more but the berries on these plants look good and ARE NOT.
Do you have questions? Do ask. You can get Vitamin C and some other great Vitamins in wild berries. Now is the time of year to enjoy them.