WANOSCG Orchid Fact Sheet

Pterostylis macrocalymma

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Name and Authority

Pterostylis macrocalymma M.A.Clem. & D.L.Jones

Synonyms (previous names)

Oligochaetochilus macrocalymma

Common Name

Large-hooded Rufous Greenhood

Complex Name

Pterostylis rufa (Rufus Greenhoods)

Originally Described by

Mark Clements & David Jones in Austral.Orchid Res. 1:124 (1989)

Distribution and Habitat

Northampton to Eurardy Station, growing in sandy-clay and clay soils in tall shrublands.

Flowering Months

· · · · · · · Aug Sep Oct · ·

Description

A large flowered species 80–250 mm high with eight to 12 leaves forming a ground-hugging basal rosette 50–70 mm across and up to 10 translucent, green and white or brown and white flowers 8–10 mm across.

Distinguishing Features

It is distinguished from the related Spoon-lipped Rufous Greenhood (Pterostylis spathulata) by its shorter stature and larger flowers.

WA Conservation Code (Threatened Status)

Priority One

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