English: sea grasses.
Members: 16 genera.
TaxonomyThe 5 families
Zosteraceae,
Cymodoceaceae,
Posidoniaceae,
Potamogetonaceae and
Ruppiaceae form one monophyletic clade in the
Apg3 classification. The are sea grasses.
Plant theoryIn the
Plant theory they are treated as one family
Zosteraceae. It is placed in Alismateles,
Phase 1, and in
Subphase 1.
FamiliesCymodoceaceae: Manatee-grass family; Sea grasses; Amphibolis, Cymodocea, Halodule, Syringodium, Thalassodendron
Posidoniaceae: Sea grass family: Posidonia.
Potamogetonaceae: Pondweed family; Althenia, Groenlandia, Lepilaena, Potamogeton, Stuckenia, Zannichellia.
Ruppiaceae: Ruppia.
Zosteraceae: Sea grass family; Phyllospadix, Zostera, including Heterozostera, Zostera, Zosterella.