Abstract
The New Zealand and southern Australian form of Doodia media R.Br, is separable from the type from Queensland and is described here as subspecies australis. D. squarrosa Col. is reinstated as a species distinct from D. caudata (Cav.)R.Br. The hybrid D. caudata × media ssp. australis is described and named D. × digena. D. milnei Carr is recognised as a full species restricted to the Kermadec Islands. The Australian species D. aspera R.Br, is recorded for the first time in New Zealand. A key to the New Zealand taxa is given, based on field grown plants, both living and as herbarium specimens, and plants grown in a uniform environment for two years. Typification, descriptions, synonymy of New Zealand material, habitat data, distribution maps, and citation of specimens examined are given for each taxon.

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