Another European sp., is reported to be established on Prince Edward Island. It is much like no. 8 [Rosa micrantha Sm.], but the lvs have a resinous odor and are more tomentose beneath, and the stem often has straighter prickles.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.