Alternanthera reineckii

{{Short description|Species of aquatic plant}}

{{Speciesbox

|image = Alternanthera_reineckii.jpg

|genus = Alternanthera

|species = reineckii

|authority = Briq.

|synonyms = Alternanthera cardinalis
Telanthera osiris
Alternanthera rosaefolia

}}

Alternanthera reineckii is a species of aquatic plant in the family Amaranthaceae known as water hedge. Several cultivars are used as ornamental plants in aquaria. It is native to South America.{{cite book |last1=Kasselmann |first1=Christel |title=Aquarium Plants |date=2020 |location=Teltow, Germany |isbn=978-3-00-064912-7 |page=108}}

The species populates submerged and semi-aquatic habitats such as marshes, stream banks, and ponds. It grows up to 30cm tall.{{cite book |last1=Kasselmann |first1=Christel |title=Aquarium Plants |date=2020 |location=Teltow, Germany |isbn=978-3-00-064912-7 |page=108}}