Prasophyllum occidentale R.S. Rogers

Trans. & Proc. Roy. Soc. South Australia 32: 11 (1908) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Flowering stem slender, 15–30 cm tall. Leaf-blade to 15 cm long, 2–3 mm diam. at base, apex erect, often partially senescent at flowering time. Flowers 7–25, small, fragrant, yellowish green to brownish, in a moderately loose spike 5–11 cm long; ovary obovoid, c. 3 mm long; sepals 7–8 mm long, dorsal sepal ovate-lanceolate, deflexed, lateral sepals linear-lanceolate, free, more or less parallel, straight or recurved; petals linear-lanceolate, 6–7 mm long. Labellum subsessile, ovate-lanceolate, 4.5–5.5 mm long, porrect at base, reflexed at about 90 deg. near middle, lamina cream to reddish, margins crinkled to slightly irregular; callus plate smooth, fleshy, raised, green or brownish, extending well beyond labellum bend. Column appendages linear-oblong, c. 2 mm long. Flowers Sep.–Oct.

GGr, LoM, MuF, MuM, NIS, OtP, VRiv, VVP, Wim. Also SA. In Victoria known only from Callitris gracilis/Allocasuarina luehmannii woodlands of the north-west on loamy soils subject to inundation.

Some authors regard P. occidentale as being endemic to South Australia with several similar-looking undescribed taxa present in Victoria (see Prasophyllum sp. aff. occidentale C, Prasophyllum aff. occidentale D and Prasophyllum sp. aff. occidentale E). Prasophyllum aff. occidentale A sensu Rouse 2002 is regarded here as a synonym of P. occidentale, the two being quite similar in their salient features.

Created by: Jeff Jeanes, 2015-04-09
Updated by: Jeff Jeanes, 2015-04-09
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Asparagales
family Orchidaceae
genus Prasophyllum
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Prasophyllum occidentale in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Prasophyllum occidentale in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Lowan Mallee present native
Murray Mallee present native
Wimmera present native
Victorian Volcanic Plain present native
Victorian Riverina present native
Murray Fans present native
Otway Plain present native
Greater Grampians present native
Northern Inland Slopes present native

State distribution

Distribution map
South Australia
New South Wales