Diuris fragrantissima D.L.Jones & M.A.Clem.

Cat. Austral. Orchid. (Austral. Orchid Res. 1) 68 (1989) APNI

Taxonomic status:Accepted

Occurrence status:Endemic

Establishment means:Native

Threat status:EPBC: endangered (EN); Victoria: endangered (e); listed in Flora and Fauna Guarantee Act 1988

Flowering plant 10–20 cm tall, stout. Leaves 2, linear, channelled, 10–20 cm long. Flowers (1–)3–12, erect, white with mauve or pale purple markings, fragrant; pedicel (excluding ovary) 1–2 cm long, mostly enclosed within bract; dorsal sepal erect, ovate, 11–15 mm long; lateral sepals deflexed, virtually parallel, narrow-linear, greatly exceeding petals, 35–80 mm long; petals erect or recurved, ovate to elliptic, 12–20 mm long, mostly long-tapering to base (indistinctly clawed). Labellum 3-lobed from base, 10–12 mm long; lateral lobes about half as long as mid-lobe, oblong, erect, margins entire; mid-lobe keeled, broadly clawed at base, broadly cordate, triangular or fan-shaped, margins wrinkled, with 2 longitudinal yellow ridges to near midway. Column narrowly winged. Flowers Oct.–Nov.

CVU, GipP, VVP. Exceedingly rare, restricted to remnant dry grassland on the basalt plains near Sunshine west of Melbourne.

Diuris fragrantissima differs from D. punctata in its shorter, stouter stature, and in having stiff erect, strongly fragrant flowers that are white with pale purple markings. Diuris dendrobioides is similar to D. fragrantissima, but is a generally taller plant with longer lateral sepals and a later flowering period.

Efforts to establish this species in grassland reserves near Melbourne have had limited success.

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.
Updated by: Jeff Jeanes, 2015-02-06
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Asparagales
family Orchidaceae
genus Diuris
Higher taxa

Victoria

Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Diuris fragrantissima in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Diuris fragrantissima in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Victorian Volcanic Plain present native
Gippsland Plain present native
Central Victorian Uplands present native

State distribution

Distribution map
State
Queensland
New South Wales
Victoria