Common name: Blue-tongued Greenhood, Mt Wellington Greenhood
Pterostylis dubia R.Br. APNI* Description: Terrestrial herb.
Rosette leaves 3–5, scattered on the basal part of the stem, oblong to elliptic, 2–7 cm long.
Flowers 8–20 mm wide, margins entire; sessile. Scape to 15 cm high; stem smooth. Flower c. 3 cm long, green and white, erect. Apex of galea decurved. Dorsal sepal subacute to obtuse. Lateral sepals loosely embracing the galea leaving a lateral gap; sinus deeply V-shaped when viewed from the front, protruding in a shallow curve when viewed from the side; free points linear-tapered, c. 15 mm long, recurved. Petals broad, subacute. Labellum ovate to lanceolate, 14–16 mm long, c. 4 mm wide, dark blue-green, subacute, apex often curled, distal third protruding from the sinus in the set position.
Flowering: November–January
Distribution and occurrence: Grows in wet situations such as seepage areas or near streams in montane forests and subalpine shrubland; south from Brindabella Ra.
NSW subdivisions: ST
Text by D. L. Jones
Taxon concept: Flora of NSW 4 (1993)
APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.
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