Nature conservation

Threatened species

Pterostylis riparia - profile

Indicative distribution

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The areas shown in pink and/purple are the sub-regions where the species or community is known or predicted to occur. They may not occur thoughout the sub-region but may be restricted to certain areas. ( click here to see geographic restrictions). The information presented in this map is only indicative and may contain errors and omissions.
Scientific name: Pterostylis riparia
Conservation status in NSW: Vulnerable
Commonwealth status: Vulnerable
Profile last updated: 12 Aug 2019


The Barrington Tops population represents a new species, Pterostylis riparia. It is a small 'greenhood' ground orchid with a loosely formed rosette of five to eight leaves. A solitary flower is formed on a stem up to 20 cm high in October or November. The flower is green, white and reddish brown.


Only known from Barrington Tops.

Habitat and ecology

  • Grows on the edge of small streams under shrubs.
  • Forms small clonal colonies.
  • May be inundated during times of high flow.

Regional distribution and habitat

Click on a region below to view detailed distribution, habitat and vegetation information.


Recovery strategies

Activities to assist this species

Information sources

IBRA Bioregion IBRA Subregion Known or predicted Geographic restrictions region
New England TablelandsWalcha Plateau Known None
NSW North CoastBarrington Known None
NSW North CoastMummel Escarpment Known None