WANOSCG Orchid Fact Sheet

Pterostylis mutica

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Name and Authority

Pterostylis mutica R.Br.

Synonyms (previous names)

Oligochaetochilus muticus; Hymenochilus muticus

Common Name

Midget Greenhood

Complex Name

Pterostylis mutica (Midget Greenhoods)

Originally Described by

Robert Brown in Prodr. 328 (1810)

Distribution and Habitat

Tambellup to Eucla with a disjunct population at Wongan Hills, growing in sandy, sandy-clay and loamy soils in woodlands and shrublands. Also found in South Australia, Victoria, New South Wales, southern Queensland and Tasmania.

Flowering Months

· · · · · · Jul Aug Sep Oct · ·

Description

A small flowered species 100–200 mm high with four to seven leaves forming a ground-hugging basal rosette 30–40 mm across, two to three cauline leaves and up to 15 small, dull green flowers 4–5.5 mm across.

Distinguishing Features

It is distinguished from the related Northampton Midget Greenhood (Pterostylis sinuata) by its darker green flowers, entire, rather than wavy margined, rosette leaves and south-easterly distribution.

WA Conservation Code (Threatened Status)

Not Listed

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