Choke cherries in the west, like this one, are a little different. Technically they're Prunus virginiana, var melanocarpa. Their fruit is a little darker than the eastern variety. They are just as bitter as their eastern kin. I've never been to Nortrh Dakota, and I'm not sure why I might go that way. Finding out that choke cherries are their official fruit doesn't help. The designation occurred because cherry pits are so commonly found at Indian archeological sites. These grow in AK, CA, CO, ID, KS, MT, ND, NE, NM, NV, OR, SD, UT, WA, WY, AB, BC, MB, and SK. Summit Co CO, 6/17/13.