Prasophyllum roseum D.L.Jones & R.J.Bates

Pink-lip Leek-orchid

Austral. Orchid Review 82: 32, 33 (2017)

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

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

Flowering stem slender, 20–50 cm tall, wholly greenish. Leaf-blade 15–40 cm long, 2–4 mm diam. at base, erect, free for less than half its length, apex senescent at flowering. Flowers fragrant, 10–30, not widely opening, mostly green with a pink labellum, in a moderately dense raceme 3–8 cm long; ovary sessile, obovoid, 4–6 mm long, papillose; sepals 4–6 mm long, dorsal sepal ovate-lanceolate, acute, green with darker streaks, lateral sepals free, linear-lanceolate, parallel to slightly divergent, recurved, green with brownish streaks, apex entire or bidentate; petals oblong, 4–5 mm long, incurved to slightly spreading, green to pink. Labellum sessile, ovate to ovate-lanceolate, 4–5 mm long, reflexed at right-angles near middle, lamina pink, rarely white, channelled, proximal margin entire, distal margin crenulate and papillate; callus ovate, 2–2.5 mm long, raised, narrowing distally and extending to just beyond labellum bend, dark or yellowish-green, velvety. Column appendages oblong, to 2 mm long, greenish-white. Flowers Sep.–Oct.

EGU, Gold, GGr, Wim. Also occurs SA. In Victoria, confined to the west between Edenhope, Nhill and Stawell where occurring in heathy woodland and box-ironbark forest on clayey and/or gravelly (often lateritic) soils.

Closely related to the South Australian Prasophyllum fitzgeraldii, but that species has a darker pink to reddish labellum lamina and the callus plate has a different structure.

True Prasophyllum fitzgeraldii, as represented by the type specimen from the Lofty Ranges, S.Aust., in not believed to occur in Victoria.

Source: Bates, R.J. (1994). Prasophyllum. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 2, Ferns and Allied Plants, Conifers and Monocotyledons. Inkata Press, Melbourne (as Prasophyllum pallidum Nicholls).
Updated by: Neville Walsh, 2017-07-06
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Asparagales
family Orchidaceae
genus Prasophyllum
Higher taxa

Victoria

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