| 词条 | Pterostylis anatona |
| 释义 |
| name = Eungella greenhood | image = | image_caption = | genus = Pterostylis | species = anatona | authority = 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. DescriptionPterostylis anatona is a terrestrial, perennial, deciduous, herb with an underground tuber and a rosette of dark green, wrinkled leaves {{convert|15-45|mm|in|sigfig=1|abbr=on}} long and {{convert|9-18|mm|in|sigfig=1|abbr=on}} wide. A single light green and white flower {{convert|37-44|mm|in|sigfig=1|abbr=on}} long and {{convert|15-20|mm|in|sigfig=1|abbr=on}} wide with a reddish-brown tip is borne on a spike {{convert|60-180|mm|in|sigfig=1|abbr=on}} 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 {{convert|20-25|mm|in|sigfig=1|abbr=on}} long and a bulging V-shaped sinus between them. The labellum is {{convert|18-22|mm|in|sigfig=1|abbr=on}} long, about {{convert|4|mm|in|sigfig=1|abbr=on}} wide, reddish-brown and curved and protrudes above the sinus. Flowering occurs from June to August.[1]Taxonomy and namingPterostylis anatona was first formally described in 1997 by David Jones and the description was published in The Orchadian from a specimen collected near Eungella.[2] The specific epithet (anatona) is a Latin word meaning "stretching or extending upward".[3]Distribution and habitatThe Eungella greenhood grows in forest with a grassy understorey above {{convert|800|m|ft|sigfig=1|abbr=on}} between Eungella and the Blackdown Tableland.[1] References1. ^1 {{cite book|last1=Jones|first1=David L.|title=A complete guide to native orchids of Australia including the island territories|date=2006|publisher=New Holland|location=Frenchs Forest, N.S.W.|isbn=978-1877069123|page =303}} {{Taxonbar|from=Q15492969}}2. ^1 {{cite web|title=Pterostylis anatona|url=https://id.biodiversity.org.au/instance/apni/581243|publisher=APNI|accessdate=14 June 2017}} 3. ^{{cite book|last1=Brown|first1=Roland Wilbur|title=The Composition of Scientific Words|date=1956|publisher=Smithsonian Institution Press|location=Washington, D.C.|page =581}} 4 : Pterostylis|Endemic orchids of Australia|Orchids of Queensland|Plants described in 1997 |
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