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Pterostylis revoluta R.Br.
Family Orchidaceae
Pterostylis revoluta R.Br. APNI*

Description: Terrestrial herb.

Rosette leaves 3–7, ovate, 1–3 cm long, 4–12 mm wide, margins entire; petiolate.

Scape to 15 cm high, with 3–5 closely sheathing stem leaves. Flower 2.5–3 cm long, partially nodding, pale green and white. Dorsal sepal with a filiform point to 6 mm long. Petal margins not flared. Lateral sepals tightly embracing the galea; sinus broadly V-shaped, protruding in a shallow curve when viewed from the side; free points to 25 mm long, filiform, erect or curved forwards. Labellum narrow-ovate to lanceolate, long-acuminate, 14–17 mm long, c. 3 mm wide, dark red-brown, curved, the distal half protruding from the sinus in the set position.

Flowering: February–June.

Distribution and occurrence: Grows on sheltered slopes of sclerophyll forest in coastal and near-coastal districts; chiefly from Cessnock area to Nowra.
NSW subdivisions: NC, CC, SC, NT
Other Australian states: Qld
AVH map***

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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