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 and stems villous; leaflets 1.5-2.5× as long as wide
1 Leaves and stems glabrous or sparsely strigose; leaflets 2-7× as long as wide