Family · Monocots

Posidoniaceae

Neptune grass

Single genus Posidonia of marine seagrasses forming vast, ancient Mediterranean and Australian meadows.

Accepted species

9accepted names · Kew WCVP

Genus

1accepted genus · Kew WCVP

Origin

≈7 MaNeogene · crown age, Jin & Qian 2022 megatree

Centre of diversity

Australasiamost native species · WGSRPD

Open Posidoniaceae in the treePan, zoom and dig into its genera in the interactive view.›

Plants you might know

• Posidonia oceanica
• Posidonia australis

Its genus

• Posidonia9 spp.

Where it grows

• Australasia8
• Asia-Temperate2
• Europe1
• Africa1

Native species richness by botanical continent (WGSRPD level 1), from Kew WCVP.

Related families

Posidoniaceae sits in the order Alismatales.

• AraceaeAroids — philodendron, monstera, arum4,890
• PotamogetonaceaePondweeds193
• HydrocharitaceaeTape grass, frogbit145
• AlismataceaeWater plantains123
• AponogetonaceaeCape pondweeds60
• JuncaginaceaeArrowgrasses35
• TofieldiaceaeFalse asphodels30
• ZosteraceaeEelgrasses (seagrass)19
• CymodoceaceaeManatee grass (seagrass)18
• RuppiaceaeDitch grasses12
• ButomaceaeFlowering rush2
• ScheuchzeriaceaeRannoch-rush1
• Maundiaceae1