Stem
Position: Trailing, rarely very short
Leaf position
On stems: Alternate
No stems or very short: Rarely radical or in rosette
Floating leaf
Leaf form: Reniform
Emergent leaf
Leaf margin: Crenate or incised
Leaf form: Reniform
Width: (20-)40-60(-80) mm
Leaf nervation
Main form: Palmate
Number of main veins: (8-)9-10(-11)
Flowers
Position: Umbel or corymb
Peduncle: Shorter than petiole
Corolla
Colour: Green, rarely white