grooved helmet-orchid  |  

Corybas sulcatus

Status: Critically Endangered on the EPBC Act list

Corybas sulcatus (grooved helmet-orchid), Family Orchidaceae, is a small, deciduous,
tuberous terrestrial orchid that forms small clonal colonies. Leaves are solitary, circular
(12Ð20 mm diameter) and flat to shallowly concave. They are light green above and silvery
green beneath, with a thick-textured blade and fleshy leaf stalk 12Ð16 mm long. Flowers are
25Ð30 mm long and 10Ð14 mm wide, mostly dark red and held erect on a fleshy, green stalk
that is 5Ð7 mm long (Clements and Jones, 2007).

Government evidence of impact of climate change:

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  • Australian Government, Conservation Advice, Corybas sulcatus

    The main potential threat to species is the drying effect of climate change; given its preferred habitat of wet; grassy seepage sites (DPIPWE; 2011).

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  • Australian Government, Listing Advices, Corybas sulcatus

    Potential Climate change Climate change on Macquarie Island (Pendlebury and Barnes Keoghan; 2007 Tweedie and Bergstrom; 2000; pp. 272 281 both in DPIPWE; 2011) may cause drying and this would affect the grooved helmet orchid; given its preferred habitat of wet; grassy seepage sites (DPIPWE; 2011). 3.

    The grooved helmet orchid remains threatened by any rabbits that have not yet been eradicated; other introduced species such as slugs; and potentially by the drying effects of climate change.

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