''Nechamandra'' is a

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unisp ...

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

of an

aquatic plant Aquatic plants, also referred to as hydrophytes, are vascular plants and Non-vascular plant, non-vascular plants that have adapted to live in aquatic ecosystem, aquatic environments (marine ecosystem, saltwater or freshwater ecosystem, freshwater ...

family

Hydrocharitaceae Hydrocharitaceae is a flowering plant family which includes 14 accepted genera and a total of ca 135 known species (Christenhusz & Byng 2016). The family holds a number of species of aquatic plants, including tape-grass, the well-known Canadian ...

.Cook and Luond (1982
A Revision of the genus ''Nechamandra'' (Hydrocharitaceae)
''Aquatic Botany'' 13: 505-513 The sole species is ''Nechamandra alternifolia''. It is found in slow moving fresh water.

Distribution and habitat

This is a rare plant in lakes and ponds. It is known from Asian fresh waters of Sudan, Socotra, Sri Lanka, India, Nepal, Bangladesh, China, Myanmar, Thailand, and Vietnam.Ito, Y., T. Ohi-Toma, Nb. Tanaka, and J. Murata (2009) New or noteworthy plant collections from Myanmar (3) ''Caldesia parnassifolia'', ''Nechamandra alternifolia'', ''Potamogeton maackianus'' and ''P''. ''octandrus''. ''Journal of Japanese Botany'' 84: 321-329.

Chromosome number

Chromosome numbers of 2n = 14 is reported from India and Myanmar.

References

Hydrocharitaceae genera Monotypic Alismatales genera Hydrocharitaceae {{Alismatales-stub