Hydrocotyle ranunculoides	Hydrocotyle leucocephala	Hydrocotyle sibthorpioides	Hydrocotyle verticillata	Hydrocotyle vulgaris
leaf incised to petiole, sides overlapping	leaf incised to petiole, margin minutely crenate	leaf incised to petiole, margin conspicuously crenate	leaf not incised to petiole	leaf not incised to petiole, margin minutely crenate
inflorescence stalk shorter than petiole	inflorescence stalk longer than petiole	inflorescence stalk shorter than petiole	inflorescence stalk longer than petiole	inflorescence stalk shorter than petiole
flowers in an umbel	flowers in an umbel	flowers in an umbel	flowers in simple or forking spike-like whorls	flowers in an umbel