Common along river. No leaves at this time of year, just the very conspicuous berries.
Unsure between the native bittersweet (Celastrus scandens) or the oriental one (C. orbiculatus). Based on the USGS website below, I think the bright yellow capsules (rather than orange) and the berries along the branch (rather than just at the tips) indicate the exotic, unfortunately.
American and Oriental Bittersweet Identification: http://www.glsc.usgs.gov/_files/factsheets/2007-2%20Identifying%20Bittersweet.pdf
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