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 Table 21. The most diverse aquatic taxa by region and elevation zones with their numbers of species.
 
| Families |  | Galápagos | Coastal | Amazonian |  | 0500 m | 5001000 m | 10001500 m | 0500 m | 5001000 m | 0500 m | 5001000 m |  | Najadac. 2 | Apiac. 1 | Callitrichac. 1 | Lemnac. 9 | Alismatac. 1 | Alismatac. 6 | Alismatac. 1 |  | Potamogetonac.2 | Callitrichac. 1 |  | Pontederiac. 9 | Callitrichac. 1 | Pontederiac. 5 | Lemnac. 1 |  | Salviniac. 2 | Ceratophyllac. 1 |  | Nymphaeac. 6 | Lemnac. 1 | Lemnac. 2 | Lentibulariac.1 |  | Callitrichac. 1 | Lemnac. 1 |  | Alismatac. 5 | Lentibulariac.1 | Lentibulariac.2 | Limnocharitac.1 |  | Ceratophyllac. 1 | Najadac. 1 |  | Limnocharitac.3 | Limnocharitac.1 | Nymphaeac. 2 | Mayacac. 1 |  | Crassulac. 1 | Ranunculac. 1 |  | Najadac. 3 | Menyanthac. 1 |  | Pontederiac. 1 |  | Lemnac. 1 | Salviniac. 1 |  | Onagrac. 3 | Najadac. 1 |  | Potamogetonac.1 |  | Lentibulariac. 1 |  |  | Salviniac. 3 | Orchidac. 1 |  | Salviniac. 1 |  | Onagrac. 1 |  |  |  | Pontederiac. 1 |  |  |  |  |  |  |  | Salviniac. 1 |  |  |  | Andean |  | 10001500 m | 15002000 m | 20002500 m | 25003000 m | 30003500 m | 35004000 m | 40004500 m |  | Lemnac. 2 | Lemnac. 2 | Potamogetonac.3 | Potamogetonac.5 | Potamogetonac.6 | Isoetac. 3 | Potamogetonac.2 |  | Potamogetonac.2 | Potamogetonac.2 | Apiac. 1 | Lemnac. 4 | Isoetac. 3 | Potamogetonac.3 | Crassulac. 1 |  | Alismatac. 1 | Apiac. 1 | Lemnac. 1 | Salviniac. 2 | Crassulac. 1 | Hydrocharitac. 2 | Elatinac. 1 |  | Callitrichac. 1 | Lentibulariac. 1 | Lentibulariac. 1 | Scrophulariac. 2 | Cyperac. 1 |  | Haloragac. 1 |  | Lentibulariac. 1 | Mayacac. 1 | Orchidac. 1 | Typhac. 2 | Elatinac. 1 |  | Hydrocharitac. 1 |  | Mayacac. 1 | Pontederiac. 1 | Ranunculac. 1 |  | Haloragac. 1 |  | Isoetac. 4 |  | Typhac. 1 | Ranunculac. 1 | Typhac. 1 |  | Hydrocharitac. 1 |  | Juncaginac. 1 |  |  | Typhac. 1 |  |  | Juncaginac. 1 |  | Salviniac. 1 |  |  |  |  |  | Ranunculac. 1 |  | Scrophulariac. 1 |  |  |  |  |  | Scrophulariac. 1 |  |  |  |  |  | Genera |  | Galápagos | Coastal | Amazonian |  | 0500 m | 5001000 m | 10001500 m | 0500 m | 5001000 m | 0500 m | 5001000 m |  | Najas2 | Callitriche1 | Callitriche1 | Nymphaea6 | Callitriche1 | Echinodorus5 | Heteranthera1 |  |  | Ceratophyllum1 |  | Heteranthera5 | Habenaria1 | Eichhornia3 | Lemna1 |  |  | Hydrocotyle1 |  | Eichhornia3 | Heteranthera1 | Nymphaea2 | Limnocharis1 |  |  | Lemna1 |  | Lemna3 | Lemna1 | Utricularia2 | Mayaca1 |  |  | Najas1 |  | Ludwigia3 | Limnocharis1 |  | Potamogeton1 |  |  | Ranunculus1 |  | Najas3 | Najas1 |  | Sagittaria1 |  |  | Salvinia1 |  | Sagittaria3 | Nymphoides1 |  | Salvinia1 |  |  |  |  |  | Sagittaria1 |  | Utricularia1 |  |  |  |  |  | Salvinia1 |  |  |  |  |  |  |  | Utricularia1 |  |  |  | Andean |  | 10001500 m | 15002000 m | 20002500 m | 25003000 m | 30003500 m | 35004000 m | 40004500 m |  | Potamogeton2 | Lemna2 | Potamogeton3 | Potamogeton5 | Potamogeton6 | Isoetes3 | Isoetes4 |  | Callitriche1 | Potamogeton2 | Habenaria1 | Azolla2 | Isoetes3 | Potamogeton3 | Potamogeton2 |  | Echinodorus1 | Heteranthera1 | Hydrocotyle1 | Lemna2 | Crassula1 | Elodea2 | Azolla1 |  | Lemna2 | Hydrocotyle1 | Lemna1 | Limosella2 | Elatine1 |  | Crassula1 |  | Mayaca1 | Mayaca1 | Ranunculus1 | Typha2 | Elodea1 |  | Elatine1 |  | Typha1 | Ranunculus1 | Typha1 |  | Lilaea1 |  | Elodea1 |  | Utricularia1 | Typha1 | Utricularia1 |  | Limosella1 |  | Lilaea1 |  |  | Utricularia1 |  |  | Myriophyllum1 |  | Limosella1 |  |  |  |  |  | Ranunculus1 |  | Myriophyllum1 |  |  |  |  |  | Schoenoplectus1 |  |  |  
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