Nature conservation

Threatened species

Corunastylis sp. Charmhaven (NSW896673) - 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: Corunastylis sp. Charmhaven (NSW896673)
Conservation status in NSW: Critically Endangered
Commonwealth status: Critically Endangered
Gazetted date: 27 Sep 2013
Profile last updated: 03 Nov 2023


Corunastylis sp. Charmhaven (NSW896673) is a terrestrial orchid (Weston in litt. 2012) that has recently been formally described as Genoplesium branwhiteorum (Renner et al, 2022). The listing under the BC Act and EPBC Act, however, has not changed. The species is commonly known as the Charmhaven midge orchid. 

Similar to Corunastylis archeri (syn. Genoplesium archeri) it differs by having fewer, larger flowers (6-9 flowers, 6 mm across,versus 10-20 flowers, 4.5–5 mm across in C. archeri), borne on a shorter inflorescence (1.4 cm long versus 2–3.5cm long in C. archeri). Flowering has been observed from November through to March.


Corunastylis sp. Charmhaven (NSW896673) is distributed from Morisset in the north to Warnervale in the south and as far east as Chain Valley Bay.

Habitat and ecology

  • It occurs within low woodland to heathland with a shrubby understorey and ground layer. Dominants include Black She-oak (Allocasuarina littoralis), Prickly Tea-tree (Leptospermum juniperinum), Prickly-leaved Paperbark (Melaleuca nodosa), Narrow-leaved Bottlebrush (Callistemon linearis) and Zig-zag Bog-rush (Schoenus brevifolius).

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
Sydney BasinWyong Known None