Diuris inundata is a species of orchid that is endemic to south-eastern continental Australia. It usually has between three and six grass-like leaves and a flowering stem with one or two pale yellow to buttercup yellow flowers with a few rusty-red specks.
Diuris inundata is a tuberous, terrestrial herb usually with a loose tuft of pale green, linear leaves long and wide. One or two pale yellow to buttercup yellow flowers wide are borne on a flowering stem tall. The dorsal sepal is egg-shaped, long, wide, the lateral sepals linear, paper-thin, long, wide and diverge from each other. The petals spread horizontally apart and are narrowly egg-shaped to narrowly elliptic, long and wide. The labellum has three lobes, the middle lobe triangular, long and about wide and the side lobes triangular, about long and wide and fringed with red. There are two diverging, densely pimply calli ridges. Flowering occurs as the habitat dries after winter, from early September to late November.[1]
Diuris inundata was first formally described in 2017 by David Jones and Robert Bates in Australian Orchid Review from specimens collected near Penola in 2005.[2] The specific epithet (inundata) means "inundated", referring to the winter-wet places preferred by this species.
This species of orchid usually grows among sedges and shrubs in winter-wet river red gum forest, in south-eastern South Australia and nearby areas of Victoria.