One of the best ways to tell multiflora roses from other rose species, including native ones, is by looking at the canes. Multiflora roses have bright olive canes that keep their color year-round.
The multiflora rose has its origins in East Asia, which is why it's been able to spread in the US as an invasive species.
There are also other species from the Rosa genus other than Rosa rubiginosa that have escaped into the wild, due to the growth of so many ornamental species from this genus throughout the country, and ...