Alexfloydia Explained

Alexfloydia is a genus of perennial stoloniferous grasses in the panic grass subfamily of the Poaceae grass family.[1] [2]

This genus is endemic to coastal eastern New South Wales in Australia.

There is one known species, Alexfloydia repens.[3] This genus was named in honour of the species discoverer, Australian botanist Alexander Floyd (1926-2022).[4] [5]

Habitat and distribution

Alexfloydia repens is a spreading, mat-forming grass found on the margins of brackish and tidal waterways in areas flooded by unusually high tides (called "king tides").[6] The species forms a groundcover associated with the tree species Casuarina glauca and the Endangered Ecological Community Swamp Oak Floodplain Forest. Currently this grass is known only from a few locations in the Coffs Harbour region.

Status

This species is listed as Endangered on the schedules of the NSW Threatened Species Act.[7]

Ecology

Alexfloydia repens is the sole larval food plant for the endangered Black grass-dart butterfly (Ocybadistes knightorum) (Lambkin & Donaldson, 1994).[8]

See also

Notes and References

  1. Web site: The grass genera of the world: descriptions, illustrations, identification, and information retrieval; including synonyms, morphology, anatomy, physiology, phytochemistry, cytology, classification, pathogens, world and local distribution, and references . 2009-08-19 . Watson L, Dallwitz MJ. . 2008 . The Grass Genera of the World .
  2. Simon, B.K. 1992. Studies in Australian grasses 6. Alexfloydia, Cliffordiochloa and Dallwatsonia, three new panicoid grass genera from Eastern Australia. Austrobaileya 3:669-681.
  3. Web site: Alexfloydia. The Grass Genera of the World. 2008-04-02. https://web.archive.org/web/20080514071729/http://delta-intkey.com/grass/www/alexfloy.htm. 14 May 2008 . live.
  4. Web site: Alexander G. Floyd (1926 - 2022) . Australian National Herbarium. 2008-04-02.
  5. http://bie.ala.org.au/species/urn:lsid:biodiversity.org.au:apni.taxon:410487# Atlas of Living Australia, Alexfloydia B.K.Simon
  6. http://oceanservice.noaa.gov/education/kits/tides/tides06_variations.html Tidal Variations — The Influence of Position and Distance
  7. Web site: Black grass-dart butterfly - endangered species listing . Department of Environment & Climate Change (NSW) . 2008-04-02 . https://web.archive.org/web/20060907232315/http://www3.environment.nsw.gov.au/npws.nsf/Content/Black+grass-dart+butterfly+endangered+species+listing . 2006-09-07 . dead.
  8. Web site: Alexfloydia repens (a grass) - endangered species listing. Department of Environment & Climate Change (NSW). 2008-04-02.

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