O gênero foi nomeado em homenagem a Alexander Floyd, descobridor da única espécie: Alexfloydia repens. As plantas do gênero são encontradas exclusivamente na Austrália.
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.)
KBD: Kew Bibliographic Databases of Royal Botanic Gardens, Kew
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
"Alexfloydia repens (a grass) - endangered species listing". Department of Environment & Climate Change (NSW).