Diuris orientis D.L.Jones

Contr. Tasmanian Orchid. 4 (Austral. Orchid. Res. 3) 77 (1998) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Flowering plant moderately stout, 10–40 cm tall. Leaves 1–3, linear to lanceolate, channelled, 10–30 cm long. Flowers (1–)2–4(–6), yellow, with reddish brown and purplish suffusions; pedicel (excluding ovary) 2–4 cm long, slender, partly enclosed within bract; dorsal sepal projected forward then curved upwards, broad and rounded, 9–15 mm long, shorter than petals and lateral sepals, tip slightly pointed; lateral sepals deflexed, usually parallel (but sometimes crossed), linear, 12–22 mm long, with oblique, blunt tips, stoutish, green; petals obliquely erect or spreading, 15–25 mm long, shortly clawed, lamina ovate or elliptic. Labellum projected forward or deflexed, dark reddish brown, purple and yellow blended together, 10–14 mm long, 3-lobed; lateral lobes nearly as long as mid-lobe, broadly oblong, asymmetric, margins entire; mid-lobe wedge-shaped, strongly folded, apex rounded, emarginate; callus ridge single, narrowing and merging with keel near midway. Column wings about same height as anther. Flowers usually Sep.–Nov.

CVU, DunT, EGL, EGU, GipP, Glep, Gold, GGr, HNF, HSF, NIS, OtP, OtR, Strz, VAlp, VRiv, VVP, WaP, WPro, Wim. Also SA, NSW, Tas. Locally common in light forest and heathlands across southern Victoria with isolated records from the north-east.

Previously confused with Diuris longifolia and D. corymbosa, both now considered to be endemic in Western Australia.

Hybridizes sporadically with Diuris behrii, D. chryseopsis, D. palustris, D. pardina and D. sulphurea.

Source: Entwisle, T.J. (1994). Orchidaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 2, Ferns and Allied Plants, Conifers and Monocotyledons. Inkata Press, Melbourne (as Diuris corymbosa Lindl.).
Updated by: Val Stajsic, 2018-02-16
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Asparagales
family Orchidaceae
genus Diuris
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Diuris orientis in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Diuris orientis in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Wimmera present native
Glenelg Plain present native
Victorian Volcanic Plain present native
Victorian Riverina present native
Gippsland Plain present native
Otway Plain present native
Warrnambool Plain present native
Goldfields present native
Central Victorian Uplands present native
Greater Grampians present native
Dundas Tablelands present native
Northern Inland Slopes present native
East Gippsland Lowlands present native
East Gippsland Uplands present native
Wilsons Promontory present native
Highlands-Southern Fall present native
Highlands-Northern Fall present native
Otway Ranges present native
Strzelecki Ranges present native
Victorian Alps present native

State distribution

Distribution map
Western Australia
South Australia
New South Wales