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Which Alismatales families consist mainly of marine seagrasses?
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Alismatales
Showy and delicate flowers of the flowering rush (Butomus umbellatus).
Within the order Alismatales, the families that consist primarily of marine seagrasses are:
- Posidoniaceae: This family consists of a single genus, Posidonia, which is native to the Mediterranean and coastal Australia.1
- Cymodoceaceae: This family contains five genera and is native to tropical and subtropical seacoasts globally.1
- Zosteraceae: This family is widely distributed in marine waters worldwide, particularly in cold temperate waters of the Northern Hemisphere. Its genera include Zostera (eelgrass), Phyllospadix (surf grass), and Heterozostera.1