Pterostylis alpina R.S.Rogers

Mountain Greenhood

Proc. Roy. Soc. Victoria, new ser., 28: 108 (1915) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Flowering plant to 30 cm tall, stem scabrous. Rosette leaves 3–5, ovate, elliptic or obovate, 2–6 cm long, 1.5–3 cm wide, scattered on the basal part of the stem, sessile, margins entire. Flower 2.5–3 cm long, erect, dark green and white; apex of galea flat or slightly decurved; dorsal sepal acute to subacute; lateral sepals erect, loosely fembracing the galea leaving a lateral gap, sinus broadly notched when viewed from the front, protruding prominently in an abrupt curve when viewed from the side, free points linear-tapered, 13–18 mm long, reflexed behind the galea; petals broad, subacute. Labellum narrowly ovate-lanceolate, 12–14 mm long, 3–3.5 mm wide, dark green to brown, curved forwards above the middle, subacute, distal third protruding from the sinus in the set position. Flowers Aug.–Oct.

CVU, DunT, EGL, EGU, GipP, GGr, HFE, HNF, HSF, NIS, SnM, Strz, VAlp, VVP, WPro. Also NSW, ?Tas. Widespread in moist forests of the foothills and ranges and extending to montane areas, commonly on sheltered south-facing slopes and near streams.

Distinguished from P. monticola by its generally smaller flower with swept back lateral sepals (erect in P. monticola). Pterostylis aneba has slightly larger flowers than P. alpina and the apex to the galea is obliquely erect.

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, 2015-06-04
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Asparagales
family Orchidaceae
genus Pterostylis
Higher taxa

Victoria

Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Pterostylis alpina in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Pterostylis alpina in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Victorian Volcanic Plain present native
Gippsland Plain 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
Strzelecki Ranges present native
Highlands-Far East present native
Victorian Alps present native
Snowy Mountains present native

State distribution

Distribution map
State
New South Wales
Australian Capital Territory
Victoria
Tasmania