Pinnately trifoliolate (three leaflets per leaf); serrations on tip of leaflets; stipules have teeth, lobes and sharp pointed tips.
Palmately trifoliolate; finely serrated; large, pointed stipules; glabrous.
Appearance of five leaflets per leaf, with two of the five actually stipules.
Alternate with stipules; pinnately multifoliolate (many leaflets per leaf); 9-25 leaflets per leaf.
Palmately trifoliolate; serrations most conspicuous midway between tip and base of leaflet; underside of leaflet shiny; inverted V-shaped "water-mark" not always evident; upper or forward surfaces of petiole often grooved;
Pinnately trifoliolate; midrib pubescence pointed upward; large paper-thin stipules; leaflet on a very short petiole.
Palmately trifoliolate; leaflets not serrated; inverted V-shaped "water mark" usually present; large stipules; stems leaves and petioles pubescent
Pinnately trifoliolate; leaflets serrated over entire margin; stipules small, not toothed.