AppearanceThis is a fast-growing, vining, annual herb producing long, thin stems with ivy-like, petioled, heart-shaped leaves 2.5–6 centimetres long. The leaves sometimes, but not always, have three lobes. The vines produce tubular bell-shaped flowers, each about two centimeters long. They are quite variable in color, in shades of pink, red or lavender, with or without white markings.
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