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Hydrocharitaceae
Taxonomy
Hydrocharitaceae was named by de Jussieu (1789). It is extant.
It was reranked as the unranked clade Hydrocharitaceae by Benzecry and Brack-Hanes (2008).
It was assigned to Najadales by Knowlton (1919); to Monocotyledones by Chandler (1963); to Monocotyledones by Chandler (1978); to Hydrocharitales by Benzecry and Brack-Hanes (2008); and to Alismatales by Mabberley (2000), Taylor et al. (2008), The Angiosperm Phylogeny Group (2016).
It was reranked as the unranked clade Hydrocharitaceae by Benzecry and Brack-Hanes (2008).
It was assigned to Najadales by Knowlton (1919); to Monocotyledones by Chandler (1963); to Monocotyledones by Chandler (1978); to Hydrocharitales by Benzecry and Brack-Hanes (2008); and to Alismatales by Mabberley (2000), Taylor et al. (2008), The Angiosperm Phylogeny Group (2016).
Subtaxa
Entered
by J. Cassara (authorized by H. Sims) on 2003-11-29; modified by M. Uhen on 2018-03-02
Synonymy list
| Year | Name and author |
|---|---|
| 1789 | Hydrocharitaceae de Jussieu |
| 1919 | Hydrocharitaceae Knowlton |
| 1963 | Hydrocharitaceae Chandler p. 62 |
| 1978 | Hydrocharitaceae Chandler p. 43 |
| 2000 | Hydrocharitaceae Mabberley |
| 2008 | Hydrocharitaceae Benzecry and Brack-Hanes p. 24 |
| 2008 | Hydrocharitaceae Taylor et al. p. 1029 |
| 2016 | Hydrocharitaceae The Angiosperm Phylogeny Group p. 15 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Fm. Hydrocharitaceae de Jussieu 1789
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G. Halophila Thouars 1806
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Halophila baillonis Ascherson 1874
Halophila beccarii Axcherson 1871
Halophila decipiens Ostenfeld 1902
Halophila engelmanni Ascherson 1875
Halophila madagascariensis Steudel 1840
Halophila ovalis Tasman 1858
Halophila ovata Gaud 1827
Halophila spinulosa Ascherson 1875
Halophila stipulacea Ascherson 1867
G. Stratiotes Linnaeus 1753
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†Stratiotes acuticostatus Chandler 1963
Stratiotes alismoides Linnaeus 1753
Stratiotes aloides Linnaeus 1753
†Stratiotes hantonensis Chandler 1960
†Stratiotes minutissimus Chandler 1963
G. †Thalassites Benzecry and Brack-Hanes 2008
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†Thalassites parkavonenses Benzecry and Brack-Hanes 2008
G. †Thalassotaenia van der Ham et al. 2007
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†Thalassotaenia debeyi van der Ham et al. 2007
†Thalassotaenia notophyllum Panti et al. 2025
Invalid names: Halophiloideae [empty], Thalassioideae [empty], Vallisnerioideae [empty]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: p = phylum | |||||
| Reference: Kiessling 2009 | |||||
Age range
Maximum range based only on fossils: base of the Late/Upper Campanian to the top of the Late/Upper Pleistocene or 83.60000 to 0.01170 Ma
Minimum age of oldest fossil (stem group age): 72.2 Ma
Minimum age of oldest fossil (stem group age): 72.2 Ma
Collections (87 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Campanian | Netherlands | Thalassotaenia debeyi (123189) | |
| Late/Upper Maastrichtian | Netherlands | Thalassotaenia debeyi (123178 123179 123180 123181 123183 123184 123185 123186) | |
| Late/Upper Maastrichtian | Belgium (Liège) | Thalassotaenia debeyi (78714) | |
| Late/Upper Maastrichtian | Belgium (Limburg) | Thalassotaenia debeyi (51521) | |
| Late/Upper Maastrichtian | Netherlands (Limburg) | Thalassotaenia debeyi (67133 123187 123188) | |
| Late/Upper Maastrichtian | Belgium | Thalassotaenia debeyi (123140 123142 123177) | |
| Late/Upper Maastrichtian - Danian | Netherlands (Limburg) | Thalassotaenia debeyi (32169) | |
| Eocene | United Kingdom (England) | Stratiotes hantonensis (27721) | |
| Lutetian | United Kingdom (England) | Stratiotes hantonensis (24107 24108) Stratiotes hantonensis, Stratiotes minutissimus (24106) | |
| MP 13 | Germany (Eifel) | Hydrocharitaceae indet. (24201) | |
| Middle Eocene | USA (Florida) | Thalassia testudinum, Thalassites parkavonensis (120294) | |
| Bartonian | USA (Florida) | Thalassia syringodium, Thalassia testudinum (49882) | |
| Bartonian | United Kingdom (England) | Stratiotes hantonensis (24109) Stratiotes headonensis (27778) | |
| Priabonian | United Kingdom (England) | Stratiotes headonensis (27664) Stratiotes headonensis, Stratiotes hantonensis (27663) | |
| Rupelian | Russian Federation (Sverdlovsk) | Stratiotes websteri (22844) | |
| Rupelian | Russian Federation (Tiumensky) | Stratiotes sp. (22849) | |
| Rupelian - Chattian | Germany (Saxony) | Hydrocharis magna (25001 25002) Hydrocharis magna, Ottelia minutissima (24922) Hydrocharis magna, Stratiotes zinndorfii, Ottelia minutissima (25591) Ottelia minutissima (25575) Stratiotes neglectus (25581) | |
| Rupelian - Chattian | United Kingdom (England) | Stratiotes websteri (27665) | |
| Chattian | Germany (Brandenburg) | Stratiotes neglectus (26512) | |
| Chattian | Russian Federation (Tomsk) | Stratiotes kaltennordheimensis, Stratiotes sibiricus (23888) | |
| Early/Lower Miocene | Russian Federation (Omsk) | Stratiotes sibiricus (23894) | |
| Early/Lower Miocene | Argentina (Chubut) | Thalassotaenia notophyllum (241660) | |
| Burdigalian | Germany (Bayern) | Stratiotes kaltennordheimensis (28280 28282) | |
| Langhian | Germany (Brandenburg) | Stratiotes kaltennordheimensis (23043 23062 27378) | |
| Langhian - Serravallian | Poland (Silesia) | Hydrocharis sp. (28442) | |
| Middle Miocene | Russian Federation (Omsk) | Stratiotes sp. (24078 24079) | |
| MN 6 | Portugal (Santarém) | Stratiotes kaltennordheimensis (38137) | |
| Serravallian | Germany (Saxen) | Hydrocharis neogenica, Hydrocharis morsusranae (22897) Stratiotes kaltennordheimensis (22898) | |
| Serravallian | Germany (Brandenburg) | Hydrocharis neogenica (23050 23055 23058 23355) Stratiotes kaltennordheimensis (22899 23042 23609 23666 23677 27524) Stratiotes sp. (23681) | |
| Serravallian - Tortonian | Germany (Brandenburg) | Hydrocharis neogenica (27064) | |
| Late/Upper Miocene - Middle Miocene | Russian Federation (Omsk) | Stratiotes besczeulicus (24093) | |
| Late/Upper Miocene | Russian Federation (Omsk) | Stratiotes besczeulicus (24286 24321) Stratiotes sp. (24094 24098 24099 24100 24287 24317 24320 24627) | |
| Tortonian - Messinian | Germany (North Rhine) | Stratiotes tuberculatus (27930 28046) | |
| Late/Upper Miocene - Early/Lower Pliocene | France (Elsass) | Stratiotes intermedius (21222) | |
| Zanclean | Germany (North Rhine) | Stratiotes tuberculatus (28134) | |
| Pliocene | USA (Florida) | Thalassia sp. (146875) | |
| Pliocene - Pleistocene | Italy (Umbria) | Stratiotes sp. (51756) | |
| Piacenzian - Zanclean | Germany (North Rhine) | Stratiotes sp. (28197) | |
| Late/Upper Pliocene | Russian Federation (Omsk) | Stratiotes aloides (24096) | |
| Piacenzian | Germany (Thuringen) | Stratiotes intermedius (22783) | |
| Piacenzian | Germany (Thuringia) | Stratiotes intermedius, Hydrocharis morsusranae (22781) | |
| Late/Upper Pleistocene | Bahamas | Thalassia testudinum (89418) |