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Johnsons seagrass.jpg
Halophila johnsonii – Johnson's seagrass
Scientific classification e
Kingdom: Plantae
Clade: Angiosperms
Clade: Monocots
Order: Alismatales
Family: Hydrocharitaceae
Subfamily: Hydrilloideae
Genus: Halophila
  • Barkania Ehrenb.
  • Lemnopsis Zipp. ex Zoll.
Bed of Johnson's seagrass

Halophila is a genus of seagrasses in the family Hydrocharitaceae, the tape-grasses. It was described as a genus in 1806.[2] The number of its contained species, and its own placement in the order Alismatales, has evolved.

It is widespread in tropical waters, the distribution range also extends to subtropical and temperate waters primarily the Indian and Pacific Oceans but also the Mediterranean and Caribbean Seas and the Gulf of Mexico.[1]

Unlike other seagrasses, the leaves of some species of Halophila do not have basal sheaths (i.e. the bases of the leaves do not wrap around the stem to form a sheath).[3]


Species accepted by the Kew Botanical Garden.[1]

  1. Halophila australis [sv] - southern Australia
  2. Halophila baillonis - Caribbean, North and South America
  3. Halophila beccarii - South + East + Southeast Asia
  4. Halophila capricorni - New Caledonia, islands in Coral Sea
  5. Halophila decipiens - shores of Indian Ocean and Pacific Ocean; Caribbean, Gulf of Mexico
  6. Halophila engelmannii - Mexico, Costa Rica, Bahamas, Caymans, Cuba, United States (PR, FL, LA, TX)
  7. Halophila gaudichaudii - Indian Ocean, western Pacific
  8. Halophila hawaiiana - Hawaii
  9. Halophila japonica - Japan
  10. Halophila major - Japan, Taiwan, Southeast Asia, Caroline Is
  11. Halophila mikii - Japan
  12. Halophila minor - Indian Ocean, western Pacific
  13. Halophila nipponica - Korea, Japan
  14. Halophila okinawensis - Nansei-shoto
  15. Halophila ovalis - Red Sea, Indian Ocean, western Pacific
  16. Halophila spinulosa - Southeast Asia, North Australia, New Guinea
  17. Halophila stipulacea - Red Sea, Indian Ocean
  18. Halophila sulawesii - Sulawesi
  19. Halophila tricostata - Queensland


  1. ^ a b c "World Checklist of Selected Plant Families: Royal Botanic Gardens, Kew". apps.kew.org. Retrieved 2017-01-31.
  2. ^ Louis-Marie Aubert du Petit-Thouars 1806. Genera Nova Madagascariensia 2
  3. ^ Halophila engelmannii star grass Florida Fish and Wildlife Conservation Commission. Retrieved 2012-01-28.

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