Pterostylis anatona

Species of orchid

Eungella greenhood

Scientific classification
Kingdom:  | Plantae
Clade:  | Tracheophytes
Clade:  | Angiosperms
Clade:  | Monocots
Order:  | Asparagales
Family:  | Orchidaceae
Subfamily:  | Orchidoideae
Tribe:  | Cranichideae
Genus:  | Pterostylis
Species:  |

P. anatona

Binomial name
Pterostylis anatona

D.L.Jones[1]

Pterostylis anatona, commonly known as the Eungella greenhood, is a species of orchid endemic to Queensland. It has a rosette of wrinkled leaves at the base of the plant and a single light green and white flower, reddish towards its tip. It grows in higher areas between Eungella and the Blackdown Tableland National Park.

## Description[edit]

Pterostylis anatona is a terrestrial, perennial, deciduous, herb with an underground tuber and a rosette of dark green, wrinkled leaves 15–45 mm (0.6–2 in) long and 9–18 mm (0.4–0.7 in) wide. A single light green and white flower 37–44 mm (1–2 in) long and 15–20 mm (0.6–0.8 in) wide with a reddish-brown tip is borne on a spike 60–180 mm (2–7 in) high. The dorsal sepal and petals are fused, forming a hood or "galea" over the column. The dorsal sepal is slightly shorter than the petals. There is a wide gap between the galea and the lateral sepals. The lateral sepals are erect and have narrow tips 20–25 mm (0.8–1 in) long and a bulging V-shaped sinus between them. The labellum is 18–22 mm (0.7–0.9 in) long, about 4 mm (0.2 in) wide, reddish-brown and curved and protrudes above the sinus. Flowering occurs from June to August.[2]

## Taxonomy and naming[edit]

Pterostylis anatona was first formally described in 1997 by David Jones and the description was published in The Orchadian from a specimen collected near Eungella.[1] The specific epithet (anatona) is a Latin word meaning "stretching or extending upward".[3]

## Distribution and habitat[edit]

The Eungella greenhood grows in forest with a grassy understorey above 800 m (3,000 ft) between Eungella and the Blackdown Tableland.[2]

## References[edit]

1. ^ a b "Pterostylis anatona". APNI. Retrieved 14 June 2017.
2. ^ a b Jones, David L. (2006). A complete guide to native orchids of Australia including the island territories. Frenchs Forest, N.S.W.: New Holland. p. 303\. ISBN 978-1877069123.
3. ^ Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 581.

Taxon identifiers|

* Wikidata: Q15492969
* Wikispecies: Pterostylis anatona
* APNI: 178869
* CoL: 4Q6DQ
* EoL: 247750
* GBIF: 2847491
* iNaturalist: 1178004
* IPNI: 70029378-1
* Open Tree of Life: 3973399
* Plant List: kew-259891
* POWO: urn:lsid:ipni.org:names:70029378-1
* Species+: 74640
* Tropicos: 100248970
* WFO: wfo-0000503265

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