| 词条 | Diuris filifolia |
| 释义 |
| name = Cat's face orchid | image = Appendix to the first twenty-three volumes of Edwards's Botanical Register - Plate 8.png | image_caption = Caladenia longicauda (A), Diuris filifolia (B) and Thelymitra villosa (C) from A Sketch of the Vegetation of the Swan River Colony.[1] | regnum = Plantae | unranked_divisio = Angiosperms | unranked_classis = Monocots | ordo = Asparagales | familia = Orchidaceae | subfamilia = Orchidoideae | tribus = Diurideae | subtribus = Diuridinae | genus = Diuris | species = D. filifolia | binomial = Diuris filifolia | binomial_authority = Lindl.[1] |}} Diuris filifolia, commonly known as the cat's face orchid,[3] is a species of orchid which is endemic to the south-west of Western Australia. It is one of the rarest Diuris in Western Australia, sometimes flowering in large numbers but only after hot summer fires. DescriptionDiuris filifolia is a tuberous, perennial herb, growing to a height of {{convert|200-450|mm|in|sigfig=1|abbr=on}} with between six and thirteen leaves, each {{convert|50-120|mm|in|sigfig=1|abbr=on}} long and {{convert|1-3|mm|in|sigfig=1|abbr=on}} wide. There are between two and seven pale yellow flowers with reddish-brown markings and {{convert|20-25|mm|in|sigfig=1|abbr=on}} long, about {{convert|20|mm|in|sigfig=1|abbr=on}} wide. The dorsal sepal is more or less erect, tapers towards the tip, {{convert|10-13|mm|in|sigfig=1|abbr=on}} long, {{convert|7-8|mm|in|sigfig=2|abbr=on}} wide. The lateral sepals are {{convert|12-16|mm|in|sigfig=1|abbr=on}} long, {{convert|4-5|mm|in|sigfig=2|abbr=on}} wide and turned downwards and forwards. The petals are erect or curved backwards with the blade {{convert|9-12|mm|in|sigfig=1|abbr=on}} long and {{convert|6-8|mm|in|sigfig=1|abbr=on}} wide on a brown stalk {{convert|3-5|mm|in|sigfig=1|abbr=on}} long. The labellum has three lobes, the centre lobe {{convert|8-10|mm|in|sigfig=1|abbr=on}} long and {{convert|7-9|mm|in|sigfig=1|abbr=on}} wide and the side lobes {{convert|3.5-5|mm|in|sigfig=1|abbr=on}} long and about {{convert|4|mm|in|sigfig=1|abbr=on}} wide. There are two callus ridges {{convert|4-6|mm|in|sigfig=2|abbr=on}} long in the mid-line of the labellum. Flowering occurs from October to November and is enhanced by a hot fire the previous summer.[2][3][4]Taxonomy and namingDiuris filifolia was first formally described in 1840 by John Lindley and the description was published in A Sketch of the Vegetation of the Swan River Colony as an appendix to Edwards's Botanical Register.[5][6] The specific epithet (filifolia) is derived from the Latin words filum meaning "thread"[7]{{rp|797}} and folium meaning "a leaf",[7]{{rp|466}} referring to the thin leaves at the base of the flowering stem of this species.[3]Distribution and habitatThe cat's face orchid grows in sandy soil on the edge of winter-wet areas between York and Mount Barker in the Swan Coastal Plain biogeographic region. It is a rare Diuris which sometimes flowers in large numbers but only after hot fires the previous summer.[3][4] ConservationDiuris filifolia is classified as "not threatened" by the Western Australian Government Department of Parks and Wildlife.[8]References1. ^{{WCSP | 63402 | Diuris filifolia}} {{Taxonbar|from=Q3017396}}{{DEFAULTSORT:Diuris filifolia}}2. ^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=1877069124|page=123}} 3. ^1 2 {{cite book|last1=Brown|first1=Andrew|last2=Dixon|first2=Kingsley|last3=French|first3=Christopher|last4=Brockman|first4=Garry|title=Field guide to the orchids of Western Australia : the definitive guide to the native orchids of Western Australia|date=2013|publisher=Simon Nevill Publications|isbn=9780980348149|page=225}} 4. ^1 {{cite book|last1=Hoffman|first1=Noel|last2=Brown|first2=Andrew|title=Orchids of South-West Australia.|date=2011|publisher=Noel Hoffman|location=Gooseberry Hill|isbn=9780646562322|page=494|edition=3rd}} 5. ^{{cite web|title=Duiris filifolia|url= https://id.biodiversity.org.au/instance/apni/494310|publisher=APNI|accessdate=8 March 2018}} 6. ^1 {{cite book|last1=Lindley|first1=John|title=A Sketch of the Vegetation of the Swan River Colony (Appendix)|date=1840|publisher=James Ridgway|location=Piccadilly, London|page=51|url=https://archive.org/details/sketchvegetatio00goog|accessdate=8 March 2018}} 7. ^1 {{cite book|last1=Brown|first1=Roland Wilbur|title=The Composition of Scientific Words|date=1956|publisher=Smithsonian Institution Press|location=Washington, D.C.}} 8. ^{{FloraBase|name=Diuris filifolia |id=10938 }} 5 : Diuris|Endemic orchids of Australia|Orchids of Western Australia|Endemic flora of Western Australia|Plants described in 1840 |
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