''Ruppia spiralis'' is an aquatic plant species in the genus ''

Ruppia ''Ruppia'', also known as the widgeonweeds, ditch grasses or widgeon grass, is the only extant genus in the family Ruppiaceae, with 11 known species. These are aquatic plants widespread over much of the world. The genus name honours Heinrich Be ...

'' of the family

Ruppiaceae ''Ruppia'', also known as the widgeonweeds, ditch grasses or widgeon grass, is the only extant genus in the family Ruppiaceae, with 11 known species. These are aquatic plants widespread over much of the world. The genus name honours Heinrich Be ...

. This name was synonymized under ''R. cirrhosa'',Grande, L. 1918. ''Note di Floristica. Bull. Orto Bot. Regia Univ. Napoli'' 5: 55–67. but it has been resurrected for the species previously referred to as ''R. cirrhosa''.Ito, Y., T. Ohi-Toma, C. Nepi, A. Santangelo, A. Stinca, N. Tanaka, & J. Murata (2017
Towards a better understanding of the ''Ruppia maritima'' complex (Ruppiaceae): Notes on the correct application and typification of the names ''R. cirrhosa'' and ''R. spiralis''
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Taxon In biology, a taxon (back-formation from ''taxonomy''; : taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and ...

'' 66: 167-171

References

Brackish water plants spiralis {{Alismatales-stub