Nature conservation

Threatened species

Rough Doubletail - profile

Indicative distribution

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The areas shown in pink and/purple are the sub-regions where the species or community is known or predicted to occur. They may not occur thoughout the sub-region but may be restricted to certain areas. ( click here to see geographic restrictions). The information presented in this map is only indicative and may contain errors and omissions.
Scientific name: Diuris praecox
Conservation status in NSW: Vulnerable
Commonwealth status: Vulnerable
Profile last updated: 12 Jan 2021


A terrestrial herb with two or three linear leaves, 15 - 35 cm long, 3 - 5 mm wide, folded flat together lengthwise. Raceme 20 - 40 cm high, 6 - 10-flowered. Flowers nodding, yellow with a few dark brown markings at the base of the dorsal sepal and labellum, ca 2.5 cm across. Dorsal sepal narrow-ovate, 9 - 11 mm long, 4.5 - 6 mm wide, obliquely erect. Lateral sepals linear to lanceolate, 12 - 15 mm long, 1.5 - 2 mm wide, bent sharply downward, parallel. Petals obliquely erect, widely divergent, curved backwards; lamina narrow-elliptic to ovate, 8 - 12 mm long, 5 - 6 mm wide; claw 4 - 6 mm long, blackish. Labellum (median petal) 9 - 12 mm long; lateral lobes linear to more or less obovate, 3 - 4 mm long, 0.8 - 1.4 mm wide.


Known from between Bateau Bay and Smiths Lake.

Habitat and ecology

  • Grows on hills and slopes of near-coastal districts in open forests which have a grassy to fairly dense understorey.
  • Exists as subterranean tubers most of the year. It produces leaves and flowering stems in winter.

Regional distribution and habitat

Click on a region below to view detailed distribution, habitat and vegetation information.


Recovery strategies

Activities to assist this species

Information sources

IBRA Bioregion IBRA Subregion Known or predicted Geographic restrictions region
NSW North CoastKaruah Manning Known Within the Parish boundaries of Forster, Eurunderee, Fens, Tomaree, Stowell and Stockton
Sydney BasinHunter Predicted Newcastle LGA
Sydney BasinWyong Known Within the Parish boundaries of Newcastle, Kahibah, Wallarah, Tuggerah and Kincumber