Halophila johnsonii Johnson’s seagrass

Halophila johnsonii Johnson's seagrass photo.jpg

Halophila johnsonii Johnson’s seagrass

Kingdom: PLANTAE
Division: ANTHOPHYTA
Class: MONOCOTYLEDONEAE
Order: HELOBIAE
Family: HYDROCHARITACEAE
Genus: Halophila
Species: johnsonii

PHYSICAL DESCRIPTION

  • Halophila is the only genus of seagrasses whose leaves do not have basal sheaths
  • Leaves are long and elliptical
  • Leaf blades are 0.5- 2.5 cm long and 1- 4 mm wide with a point at the tip
  • Leaves occur in pairs
  • Petiole is 1- 2 cm long
  • The leaf margins are entire
  • Perennial
HABITAT
  • Prefers coastal lagoons
  • Grows in the intertidal zones
  • Found in sandy substrates
DISTRIBUTION
  • This species only occurs in southeastern Florida from Sebastian Inlet to Biscayne Bay


Image Credit: NOAA Coastal Services Center



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