The Potamogetonaceae, commonly referred to as the pondweed family, is an aquatic family of monocotyledonous flowering plants. The roughly 110 known species are divided over five genera. The largest genus in the family by far is Potamogeton, which contains about 100 species.
The family has a subcosmopolitan distribution, and is considered to be one of the most important angiosperm groups in the aquatic environment because of its use as food and habitat for aquatic animals.
Taxonomy
The Potamogetonaceae are currently placed in the early diverging monocot order Alismatales by the Angiosperm Phylogeny Group. Their concept of the family includes the plants sometimes treated in the separate family Zannichelliaceae, but excludes the genus Ruppia. So circumscribed, the family currently consists of five genera totalling about 120 species of perennial aquatic plants.
Althenia F.Petit
Groenlandia J.Gay
Potamogeton L.
Stuckenia Börner
Zannichellia P.Micheli ex L.
body.skin-vector-2022
Potamogetonaceae
Groenlandia
Pseudalthenia
Zannichellia
Althenia
Stuckenia
Potamogeton
Marine grasses families: Zosteraceae, Cymodoceaceae, Ruppiaceae and Posidoniaceae. Related families: Potamogetonaceae, Zannichelliaceae (not consistently).
Families and Genera crosses (Sea grasses)
Kubitzki (ed. 1998)
Watson & Dallwitz (delta-intkey)
data.kew
APWeb (mobot.org)
Zosteraceae
1. Zostera L.
Zostera
Zostera L.
Zostera L. (including Heterozostera den Hartog, Macrozostera Tomlinson & Posluzny, Nanozostera Tomlinson & Posluzny, Zosterella J. K. Small)
2. Heterozostera den Hartog
Heterozostera
Heterozostera (Setch.) Hartog
(in Zostera)
3. Phyllospadix Hook.
Phyllospadix
Phyllospadix Hook.
Phyllospadix J. D. Hooker
Cymodoceaceae
1. Syringodium Kütz
Syringodium
Syringodium Kutz.
(in Cymodocea)
2. Halodule...
