Monotaxis is a plant genus in the family Euphorbiaceae first described as a genus in 1829.Brongniart, Adolphe Théodore. 1829 in Duperrey, Louis Isodore, Voyage Autour du Monde 223Tropicos The entire genus is endemic to Australia.Kew World Checklist of Selected Plant FamiliesGovaerts, R., Frodin, D.G. & Radcliffe-Smith, A. (2000). World Checklist and Bibliography of Euphorbiaceae (and Pandaceae) 1-4: 1-1622. The Board of Trustees of the Royal Botanic Gardens, Kew.

Species Monotaxis bracteata Nees ex Klotzsch – Western Australia Monotaxis grandiflora Endl. – Western Australia Monotaxis linifolia Brongn. – New South Wales Monotaxis luteiflora F.Muell. – Western Australia, South Australia, Northern Territory Monotaxis macrophylla Benth. – Queensland, New South Wales Monotaxis occidentalis Endl. – Western Australia Monotaxis paxii Grüning – Western Australia Monotaxis tenuis Airy Shaw – N Western Australia, N Northern Territory

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