Sometimes taxonomists create new names for groups that already have a name. They may do this because they are unaware of the original name, or they may think the organism before them belongs to a different group when in fact it does not. If two or more names are found to apply to the same group, they are considered synonyms. In most cases, the first name takes priority and is considered to be the valid or accepted name. However, there can be exceptions, and it's not always easy to determine which of a series of synonyms should be considered valid or accepted. Here we list the synonyms provided to EOL by our classification partners. We also include other versions of the name that most likely refer to the same group, for example, misspellings in the literature or different variations of the authorship associated with the name.

Preferred marks the preferred name from each source.

Integrated Taxonomic Information System (ITIS)

Name Relationship
Persicaria amphibia (L.) Delarbre Preferred
Polygonum amphibium L. Synonym
Polygonum coccineum Muhl. ex Willd.
Polygonum natans Eaton
Persicaria amphibia (L.) Gray Other, see comments
Persicaria coccinea (Muhl. ex Willd.) Greene
Persicaria mesochora Greene
Persicaria muehlenbergii (S. Watson) Small Orthographic variant (misspelling)
Persicaria nebraskensis Greene
Polygonum fluitans Eaton
Polygonum hartwrightii A. Gray
Polygonum inundatum Raf.
Polygonum amphibium ssp. laevimarginatum Hultén
Polygonum amphibium var. emersum Michx.
Polygonum amphibium var. stipulaceum N. Coleman
Persicaria amphibia var. emersa (Michx.) J.C. Hickman
Persicaria amphibia var. stipulacea (N. Coleman) H. Hara
Polygonum amphibium var. hartwrightii (A. Gray) Bissell
Polygonum coccineum var. pratincola (Greene) Stanford
Polygonum coccineum var. rigidulum (E. Sheld.) Stanford
Polygonum coccineum var. terrestre Willd.
Polygonum amphibium var. coccineum (Muhl. ex Willd.) Farw.
Polygonum muhlenbergii S.Watson
Persicaria muhlenbergii (S.Watson) Small
Polygonum muhlenbergii var. terrestre (Willd.) Trel.

Species 2000 & ITIS Catalogue of Life: April 2013

Name Relationship
Persicaria amphibia (L.) Delarbre Preferred
Polygonum hartwrightii A. Gray
Persicaria mesochora Greene
Persicaria nebraskensis Greene
Polygonum amphibium subsp. laevimarginatum Hulten
Polygonum amphibium L.
Polygonum amphibium var. emersum Michx.
Polygonum inundatum Raf.
Polygonum muehlenbergii S. Watson
Polygonum muhlenbergii S.Watson
Polygonum coccineum var. terrestre Willd.
Polygonum coccineum Muhl. ex Willd.
Persicaria amphibia (L.) Gray
Persicaria coccinea (Muhl. ex Willd.) Greene
Polygonum muhlenbergii var. terrestre (Willd.) Trel.
Polygonum muehlenbergii var. terrestre (Willd.) Trel.
Polygonum coccineum var. pratincola (Greene) Stanford
Polygonum amphibium var. coccineum (Muhl. ex Willd.) Farw.
Polygonum fluitans Eaton
Polygonum natans Eaton
Persicaria muehlenbergii (S. Watson) Small
Persicaria muhlenbergii (S.Watson) Small
Persicaria amphibia var. emersa (Michx.) J.C. Hickman
Polygonum coccineum var. rigidulum (E. Sheld.) Stanford
Polygonum amphibium var. hartwrightii (A. Gray) Bissell
Persicaria amphibia var. stipulacea (N. Coleman) H. Hara
Polygonum amphibium var. stipulaceum N. Coleman

NCBI Taxonomy

Name Relationship
Persicaria amphibia Preferred
Persicaria amphibia (L.) Delarbre Authority
Persicaria amphibia (L.) Gray
Polygonum amphibium L.
Persicaria amphibium Misspelling
Polygonum amphibium

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