My observations and experience have led me to thinking that American bittersweet is often mis-identified as oriental bittersweet. I come across the native bittersweet far more often than the non-native bittersweet when I wait to see the fruit (in northern Michigan). I don't always see fruiting material and thus have to assume that it's the native species. I was just checking a site I observed earlier in the summer that I thought would be the non-native due to its urban location and habit, but the only fruiting material I found (there wasn't much) was consistent wit the native bittersweet.
What are your experiences and observations regarding bittersweet? What are the character states displayed by the hybrid of the two?
Thanks for your input,