The Slender Onion Orchid has a labellum which is heart-shaped with smooth edges, whilst the similar Common Onion Orchid (M. unifolia) has an elongated labellum with crenate edges.
Protected NSW.
Microtis parviflora is listed in the following regions:
Canberra & Southern Tablelands | Southern Highlands | Albury, Wodonga | South Coast | Gippsland
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Synonyms
Microtis benthamiana