We're generally opposed to the Asian plants that have made it into our local woods, but the wineberry (Rubus phoenicolasius) might be one exception. For several weeks in July, these relatives of our native raspberries are abundant and delicious. And, if we can get to the berries before the birds do, and keep the plants from spreading, all the better. Get out there and do your part!
poison ivy (which has smooth stems). In addition, the undersides of the leaves are much whiter underneath than on top.
In the wild: The two most abundant wineberry spots we know of are along the C&O Canal near Chain Bridge, and Seneca Creek State Park in Gaithersburg. But they are sure to be found throughout other parks and other wild areas as well.
In your yard: Try planting a native raspberry, like the black raspberry, Rubus occidentalis. It ripens a little earlier (ours started in mid-June) and the flavor is sweeter. We love them both, but the blackcaps could use all the help they can get against the invasive wineberries.