Key to Tasmanian Dicots
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Nematoceras (Orchidaceae)

N. dienemum

N. sulcatum

 

N. sulcatum

Macquarie Island has two species of Nematoceras (Helmet Orchids, formerly Corybas). Both are small orchids with a single round leaf and a nodding flower, growing in colonies in mossy boggy sites. N. sulcatum has a pale green leaf with a pointed tip and a reddish flower. N. dienemum has a darker, blunt-tipped leaf and a greenish flower.