733B-2-Azolla-rubra-MB.jpg

Azolla rubra

Pacific Azolla

Floating perennial fern forming carpets over water. Fine unbranched roots hang in the water.

Additional information

  • SynonymAzolla filiculoides, misapplication
  • FamilySalviniaceae (syn. Azollaceae)
  • StoreyLower storey
  • SizeProstrate-15 mm x 10-20 mm
  • Plant groupingAquatic & Semi aquatic
  • LeavesEgg-shaped to fan-shaped irregularly branched plants with smooth, crowded triangular leaves. Can become rusty-red in colour.
  • FlowersSpore cases round, microscopic.
  • Bird attractingNo
  • Butterfly attractingNo
  • Frog habitatNo
  • Growing conditionsStill to slow moving fresh water. Full sun. Dies back in cold weather.
  • Garden useFish and tadpole habitat in ponds.
  • Commercially availableRarely
  • Conservation statusSignificant within the Shire. Known from very few local sites. More common outside the Shire boundary.
Photographer/s: 1, 3 (root) Helen Moss ©; 2 Marilyn Bull ©

Plant Communities

  • 47 Open Water - Reservoirs, lakes, etc (EVC 718)
  • 35 Floodplain Wetland Complex (EVC 172)
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