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.
..2 Leaflet blades smooth and somewhat shiny on the undersurface
..2 Leaflet blades papillose and dull on the undersurface
....3 Leaflet blades with 2-7 teeth per side, each tooth 3-8 mm long; leaflets very thick and stiff
....3 Leaflet blades with 6-13 teeth per side, each tooth 1-2 (-3) mm long; leaflets thickish, but flexible when fresh