Could be confused with
Asia to Australia
Species commonly cultivated
Microcarpaea minima (K.D. König) Merr. (Asia, Australia)
frequently in rice fields, but not considered weedy
small, creeping stem plant
Brief description: Annual or perennial. Stems prostrate, creeping, with adventitious roots at nodes forming dense mat. Leaves decussate, sessile; leaf blade oblong to elliptic, small (2-5 mm long); margin entire. Flowers solitary, sessile in leaf axils; sepals 5, margins ciliate, petals 5, margins ciliate; adaxial lobe longer than rest; white to pale purple. Dispersal by seeds and stem fragments.
swamps and littoral zone with periodic inundation
a single species in the genus; not widely found in the aquarium hobby; closely related to Glossostigma Wight & Am.