| 词条 | Pterostylis perculta |
| 释义 |
| name = Ruddy hood | image = | image_caption = | status_system = | status = | genus = Pterostylis | species = perculta | authority = (D.L.Jones & C.J.French) D.L.Jones[1] | synonyms_ref = [1] | synonyms = Oligochaetochilus percultus M.A.Clem. & C.J.French }} Pterostylis perculta, commonly known as the ruddy hood is a plant in the orchid family Orchidaceae and is endemic to the south-west of Western Australia. Both flowering and non-flowering plants have a relatively large rosette of leaves and flowering plants have up to five reddish-brown and white flowers with relatively short tips on the sepals. DescriptionPterostylis perculta is a terrestrial, perennial, deciduous, herb with an underground tuber and a rosette of leaves, the rosette up to {{convert|30|mm|in|sigfig=1|abbr=on}} in diameter. Flowering plants have a rosette at the base of the flowering stem but the leaves are usually withered by flowering time. Up to five reddish-brown and white flowers {{convert|4-6|mm|in|sigfig=2|abbr=on}} wide are borne on a flowering stem {{convert|70-150|mm|in|sigfig=1|abbr=on}} tall. The dorsal sepal and petals form a hood or "galea" over the column with the dorsal sepal having a short point on its end. The lateral sepals turn downward with short tips curving forwards. The labellum is small, almost glabrous, dark brown and insect-like. Flowering occurs from September to November.[2]Taxonomy and namingThis orchid was first formally described in 2014 by Mark Clements and Christopher French and given the name Oligochaetochilus percultus from a specimen collected near Cascade and the description was published in Australian Orchid Review.[3] In 2015 David Jones changed the name to Pterostylis perculta "to allow for the different taxonomic views".[4] It has previously been known as Pterostylis sp. 'Ongerup'. The specific epithet (perculta) a Latin word meaning "highly adorned".[5] Distribution and habitatThe ruddy hood grows in rocky soil in shrubland and mallee woodland between the Stirling Range and the Thomas River.[2][6] ConservationPterostylis perculta is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife.[6]References1. ^{{WCSP | 495984 | Pterostylis perculta }} {{Taxonbar|from=Q29674219}}2. ^1 {{cite book|last1=Brown|first1=Andrew|last2=Dundas|first2=Pat|last3=Dixon|first3=Kingsley|last4=Hopper|first4=Stephen|title=Orchids of Western Australia|date=2008|publisher=University of Western Australia Press|location=Crawley, Western Australia|isbn=9780980296457|page=381}} 3. ^{{cite web|title=Oligochaetochilus percultus|url=https://id.biodiversity.org.au/instance/apni/791403|publisher=APNI|accessdate=5 July 2017}} 4. ^1 {{cite web|title=Pterostylis perculta|url=https://id.biodiversity.org.au/instance/apni/4485606|publisher=APNI|accessdate=5 July 2017}} 5. ^{{cite book|last1=Brown|first1=Roland Wilbur|title=The Composition of Scientific Words|date=1956|publisher=Smithsonian Institution Press|location=Washington, D.C.|page =578}} 6. ^1 {{FloraBase|name=Pterostylis perculta|id=45358}} 4 : Pterostylis|Endemic orchids of Australia|Orchids of Western Australia|Plants described in 2014 |
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