Synonyms: Chondrocarpus sibthorpioides (homotypic); Hydrocotyle americana var. minima; Hydrocotyle americana var. monticola; Hydrocotyle confusa; Hydrocotyle ecostata; Hydrocotyle gracilenta; Hydrocotyle hirsuta var. minuta; Hydrocotyle latisecta; Hydrocotyle minima (homotypic); Hydrocotyle monticola; Hydrocotyle nitidula; Hydrocotyle peduncularis (homotypic); Hydrocotyle perexigua; Hydrocotyle puncticulata; Hydrocotyle ranunculoides (heterotypic); Hydrocotyle ranunculoides var. incisa; Hydrocotyle ranunculoides var. sibthorpioides; Hydrocotyle rotundifolia; Hydrocotyle sibthorpioides f. pilosa; Hydrocotyle sibthorpioides var. sibthorpioides; Hydrocotyle splendens; Hydrocotyle tenella; Hydrocotyle zollingeri