| 词条 | Thelymitra flexuosa |
| 释义 |
| name = Twisted sun orchid | image = Thelymitra flexuosa.jpg | image_caption = Thelymitra flexuosa near Pearcedale | taxon = Thelymitra flexuosa | authority = Endl.[1] | display_parents = 2 | synonyms_ref =[1] | synonyms = * Macdonaldia flexuosa (Endl.) Szlach.
}} Thelymitra flexuosa, known as the twisted sun orchid,[3] is a species of orchid that is endemic to southern Australia. It has a single thin, wiry leaf and up to four cream-coloured to canary yellow flowers with four rows of short hairs on the back of the column. It is a common and widespread species, superficially similar to T. antennifera. DescriptionThelymitra flexuosa is a tuberous, perennial herb with a single wiry, linear leaf {{convert|60-150|mm|in|sigfig=1|abbr=on}} long and {{convert|3-4|mm|in|sigfig=1|abbr=on}} wide. Up to four cream-coloured to canary yellow {{convert|10-15|mm|in|sigfig=1|abbr=on}} wide borne on a flowering stem {{convert|200-350|mm|in|sigfig=1|abbr=on}} tall. The sepals and petals are {{convert|5.5-7|mm|in|sigfig=1|abbr=on}} long and about {{convert|4|mm|in|sigfig=1|abbr=on}} wide. The labellum (the lowest petal) is shorter and narrower than the other petals and sepals. The column is white to cream-coloured, {{convert|4.5-5|mm|in|sigfig=2|abbr=on}} long and about {{convert|2.5|mm|in|sigfig=1|abbr=on}} wide with four lines of short hairs on its back. The lobe on the top of the anther is short with a few brown glands on its back. The side lobes are bright yellow and covered with short hairs. The flowers are short-lived, self-pollinating and open only slowly on hot, humid days. Flowering occurs from September to November.[2][3][4][5]Taxonomy and namingThelymitra flexuosa was first formally described in 1839 by Stephan Endlicher and the description was published in Novarum Stirpium Decades.[6][7] The specific epithet (flexuosa) is a Latin word meaning "full of bends", "tortuous", "crooked" or "winding",[8]{{rp|692}} referring to the twisted or "zig-zagged" flowering stem.[5][9]Distribution and habitatThe twisted sun orchid is widespread and common throughout its range. It grows with sedges and low shrubs in moist places such as the edge of swamps. It occurs in southern Victoria, south-eastern South Australia, Western Australia and Tasmania.[2][3][4] In Western Australia it is found between Kalbarri and Israelite Bay.[10][11][12] References1. ^1 {{WCSP | 203744 | Thelymitra flexuosa }} {{Taxonbar|from=Q9087259}}2. ^1 2 {{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 =247}} 3. ^1 {{cite web|last1=Jeanes|first1=Jeff|title=Thelymitra flexuosa|url=https://vicflora.rbg.vic.gov.au/flora/taxon/1cf18d5e-e289-40af-a3f1-cbded205039e|publisher=Royal Botanic Gardens Victoria|accessdate=30 May 2018}} 4. ^1 {{cite web|title=Thelymitra flexuosa|url=http://www.flora.sa.gov.au/cgi-bin/speciesfacts_display.cgi?form=speciesfacts&family=&genus=Thelymitra&species=flexuosa&iname=&submit=Display|publisher=State Herbarium of South Australia|accessdate=30 May 2018}} 5. ^1 {{cite book|last1=Mayfield|first1=Enid|title=Flora of the Otway plain & ranges (Volume 1)|date=2010|publisher=CSIRO Publishing|location=Collingwood, VIC|isbn=9780643098046|page=178|edition=2nd}} 6. ^{{cite web|title=Thelymitra flexuosa|url= https://id.biodiversity.org.au/instance/apni/549701|accessdate=30 May 2018}} 7. ^{{cite book|last1=Endlicher|first1=Stephan L.|last2=Fenzl|first2=Edouard|title=Novarum Stirpium Decades No. 3|date=1839|pages=23–24|url=https://www.biodiversitylibrary.org/item/221285#page/31/mode/1up|accessdate=30 May 2018}} 8. ^{{cite book|last1=Brown|first1=Roland Wilbur|title=The Composition of Scientific Words|date=1956|publisher=Smithsonian Institution Press|location=Washington, D.C.|page=139}} 9. ^{{cite web|last1=Archer|first1=William|title=Thelymitra flexuosa|url=http://esperancewildflowers.blogspot.com/2008/09/twisted-sun-orchid-thelymitra-flexuosa.html|publisher=Esperance Wildflowers|accessdate=30 May 2018}} 10. ^{{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=436}} 11. ^{{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=299|edition=3rd}} 12. ^{{FloraBase|name=Thelymitra flexuosa|id=1707}} External links
7 : Thelymitra|Endemic orchids of Australia|Orchids of South Australia|Orchids of Victoria (Australia)|Orchids of Tasmania|Orchids of Western Australia|Plants described in 1840 |
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