Pterostylis decurva R.S.Rogers

Summer Greenhood

Trans. & Proc. Roy. Soc. South Australia 47: 339, t. 27 (1923) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Flowering plant to 30 cm tall, stem leaves 4–5. Rosette leaves 2–5, oblong to ovate, 1–3 cm long, 1–2 cm wide, petiolate, margins entire. Flower 1.8–2.5 cm long, pale green to dark green and white with reddish brown in the galea; galea curved forwards in the distal half, sometimes abruptly decurved; dorsal sepal with filiform point 15–20 mm long; lateral sepals erect, tightly embracing the galea, sinus broadly u-shaped, abruptly protruding when viewed from the side, free points 3–4 cm long, filiform, erect; petal margins slightly flared. Labellum oblong, 11–13 mm long, c. 2.5 mm wide, dark reddish-brown, obtuse, curved forwards near the apex, the distal third protruding from the sinus in the set position. Flowers Oct.–Mar.

CVU, EGL, EGU, GipP, Gold, HFE, HNF, HSF, MonT, OtP, SnM, VAlp. Also NSW, ACT, Tas. Widespread and common in montane and subalpine regions, growing on moist grassy slopes in high-rainfall forest.

Differs from P. aestiva in its predominantly pale green and white flowers, less inflated base to the galea and shorter labellum.

Apparent hybrids with P. atrans have been observed.

Source: Jones, D.L. (1994). Pterostylis. 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, 2015-06-18
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Asparagales
family Orchidaceae
genus Pterostylis
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Pterostylis decurva in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Pterostylis decurva in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Gippsland Plain present native
Otway Plain present native
Goldfields present native
Central Victorian Uplands present native
East Gippsland Lowlands present native
East Gippsland Uplands present native
Highlands-Southern Fall present native
Highlands-Northern Fall present native
Monaro Tablelands present native
Highlands-Far East present native
Victorian Alps present native
Snowy Mountains present native

State distribution

Distribution map
Western Australia
New South Wales
Australian Capital Territory