''Pterostylis hadra'' is a plant in the orchid family

Orchidaceae Orchids are plants that belong to the family Orchidaceae (), a diverse and widespread group of flowering plants with blooms that are often colourful and fragrant. Along with the Asteraceae, they are one of the two largest families of flowering ...

and is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

to the

south-west The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths) used in navigation and cartography. A compass rose is primarily composed of four cardinal directions—north, east, south, and west—each se ...

Western Australia Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to th ...

. It was first formally described in 2015 by David Jones and

Christopher French Christopher French could refer to: *Christopher French (theologian) (fl. c. 1650–c.1713), Irish professor of divinity *Chris French (Christopher Charles French) (born 1956), British psychologist *Christopher French (judge) (1925–2003), British ...

and given the name ''Oligochaetochilus hadrus''. The description was published in the journal ''Australian Orchid Review'' from a specimen collected near Cranbrook. In the same year, Jones changed the name to ''Pterostylis hadra'' "to allow for the different taxonomic views held at generic level within the subtribe". The

specific epithet In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...

(''hadra'') is derived from the

Ancient Greek Ancient Greek includes the forms of the Greek language used in ancient Greece and the ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Dark Ages (), the Archaic peri ...

word ''hadros'' meaning "stout", "strong" or "great", referring to the robust habit of this species.

References

hadra Orchids of Western Australia Plants described in 2015 {{Orchidoideae-stub