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Halodule
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Order:	Alismatales
Family:	Cymodoceaceae
Genus:	Halodule Endl.
Synonyms[1]
Diplanthera Thouars 1806 not Gleditsch 1764 (Acanthaceae) nor Banks & Sol. ex R. Br. 1810 (syn of Deplanchea in Bignoniaceae) nor Schrank 1819 (Acanthaceae) nor Raf. 1833 (syn of Platanthera in Orchidaceae)

Halodule is a genus of plants in the family Cymodoceaceae described as a genus in 1841.^[2][3] It is widespread on tropical and semi-tropical ocean shores of all continents except Europe and Antarctica.^{[1][4][5][6][7]}

Hybridization has been reported in the Pacific between H. pinifolia and H. uninervis.^[8]

There are six recognised species:^[1]

• Halodule bermudensis - Bermuda
• Halodule ciliata - Panama
• Halodule emarginata - SE Brazil
• Halodule pinifolia - India, Sri Lanka, Southeast Asia, Hainan, Taiwan, Ryukyu Islands, New Guinea, Queensland, Fiji, New Caledonia, Tonga, Caroline Islands
• Halodule uninervis - shores of Indian + Pacific Oceans, Red Sea, Persian Gulf, Bay of Bengal, Papuasia, Queensland, Micronesia
• Halodule wrightii - Atlantic Ocean shores including Caribbean + Gulf of Mexico: Africa (Senegal, Mauritania, Angola), West Indies, South America (Venezuela, Brazil), Mexico, Central America, United States (TX LA MS AL FL NC MD)

• Jepson Manual Treatment

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