Click the number at the start of a key lead to highlight both that lead and its corresponding lead. Click again to show only the two highlighted leads. Click a third time to return to the full key with the selected leads still highlighted.
1 Leaves compound, the leaflets additionally laciniately divided; leaves green beneath
..2 Prickles nearly straight; stems glabrescent; petals pale pink to deep pink
..2 Prickles recurved; stems canescent above; petals white to pale pink