This genus is found only in Coastal Eastern New South Wales. There is one known species, Alexfloydia repens. This genus was named in honour of the species discoverer, Australian botanist Alexander Floyd (1926-).
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"). 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.
This species is listed as Endangered on the schedules of the NSW Threatened Species Act.
- Watson L, Dallwitz MJ. (2008). "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". The Grass Genera of the World. Retrieved 2009-08-19.
- 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.
- "Alexfloydia". The Grass Genera of the World. Archived from the original on 14 May 2008. Retrieved 2008-04-02.
- "Alexander G. Floyd (1926 - )". Australian National Herbarium. Retrieved 2008-04-02.
- Atlas of Living Australia, Alexfloydia B.K.Simon
- Tidal Variations — The Influence of Position and Distance NOAA ocean service education
- "Black grass-dart butterfly - endangered species listing". Department of Environment & Climate Change (NSW). Retrieved 2008-04-02.
- "Alexfloydia repens (a grass) - endangered species listing". Department of Environment & Climate Change (NSW). Retrieved 2008-04-02.