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Windswept helmet-orchid

Corybas dienemus

Also called Macquarie Island Helmet Orchid

A tiny terrestrial tuberous orchid from the subantarctic Macquarie Island, forming clonal colonies in waterlogged peat among mosses. It is a wild, rare species rather than a garden plant, so it is not grown as a houseplant.

Family
Orchidaceae (Orchid family)
Grows as
Orchid
Light
Part shade
Water
Keep constantly moist in its native waterlogged peat; the water table sits right at the soil surface.
Soil
Waterlogged peat over moss, as in its native habitat.
Temperature
Cool subantarctic temperate conditions; cold-tolerant, sensitive to heat.
How easy
Hard
Native range
SE. Tasmania, New Zealand, Macquarie Is.
Climate
temperate

About

Corybas dienemus, commonly known as the windswept helmet-orchid, is one of two helmet orchids endemic to Australia's subantarctic Macquarie Island, and the first orchid to be found there. It is a relatively small orchid with green flowers with purplish-red markings and was discovered in 1978.

Where it grows

The orchid is known from ten sites on the northern half of Macquarie Island, where it inhabits the lower coastal terraces, not more than 30 m above sea level, where the vegetation is dominated by mosses that float on a substrate of waterlogged peat with a water table very close to the soil surface. The total known population comprises about 7500 plants.

Other Corybas plants

Swamp helmet orchid · Nodding helmet orchid · Cradle Orchid · Dancing spider orchid · Fairy lanterns · Swamp helmet orchid · Red helmet orchid · Cheesemans spider orchid · Corybas circinatus · Corybas confusus · Hidden spider orchid · Corybas dentatus

Text excerpted from the Wikipedia article Corybas dienemus by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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