Pterostylis major is a plant in the orchid family Orchidaceae and is endemic to New South Wales where it grows on the Northern Tablelands. As with similar greenhoods, the flowering plants differ from those which are not flowering. The non-flowering plants have a rosette of leaves on a short stalk but the flowering plants lack a rosette and have up to eleven well-spaced, bright green flowers with darker stripes, on a flowering stem with stem leaves.

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