| 词条 | Thelymitra cyanapicata |
| 释义 |
| name = Dark-tipped sun orchid | image = | image_caption = | status = CR | status_system = EPBC | regnum = Plantae | unranked_divisio = Angiosperms | unranked_classis = Monocots | ordo = Asparagales | familia = Orchidaceae | subfamilia = Orchidoideae | tribus = Diurideae | subtribus = Thelymitrinae | genus = Thelymitra | species = T. cyanapicata | binomial = Thelymitra cyanapicata | binomial_authority = Jeanes[1] | synonyms_ref = | synonyms = }} Thelymitra cyanapicata, commonly called the dark-tipped sun orchid,[2] is a species of orchid that is endemic to South Australia. It has a single fleshy, linear, channelled leaf and up to three small blue or pale purplish to maroon flowers with a dark purplish blue top of the anther. DescriptionThelymitra cyanapicata is a tuberous, perennial herb with a single erect, fleshy, channelled, linear leaf {{convert|120-220|mm|in|sigfig=1|abbr=on}} long and {{convert|3-6|mm|in|sigfig=1|abbr=on}} wide with a purplish base. Up to three blue or pale purplish to maroon flowers {{convert|12-18|mm|in|sigfig=1|abbr=on}} wide are arranged on a flowering stem {{convert|150-300|mm|in|sigfig=1|abbr=on}} tall. The sepals and petals are {{convert|5-9|mm|in|sigfig=1|abbr=on}} long and {{convert|2.5-5|mm|in|sigfig=1|abbr=on}} wide. The column is blue, {{convert|4-5|mm|in|sigfig=2|abbr=on}} long and {{convert|2-2.5|mm|in|sigfig=1|abbr=on}} wide. The lobe on the top of the anther is dark purplish blue, gently curved and the side lobes have almost spherical tufts of white hairs. Flowering occurs in October and November but the flowers are self-pollinating and open only on hot days.[2][3]Taxonomy and namingThelymitra cyanapicata was first formally described in 2004 by Jeff Jeanes and the description was published in Muelleria from a specimen collected near Kuitpo.[4] The specific epithet (cyanapicata) is derived from the Ancient Greek word kyanos meaning "dark blue"[5]{{rp|153}} and the Latin word apex meaning "top",[5]{{rp|807}} referring to the colour of the anther lobe - a distinctive feature of this species.[3]Distribution and habitatThe dark-tipped sun orchid grows in Leptospermum thickets in woodland on the Fleurieu Peninsula.[2][3][6] ConservationThelymitra cyanapicata is only known from a single poplution in an area of about {{convert|1|km2|mi2|sigfig=1|abbr=on}} and is classified as "critically endangered" the under the Australian Government Environment Protection and Biodiversity Conservation Act 1999. The main threats to the species are forestry practices, grazing by rabbits and hares and by weed invasion.[6][7]References1. ^{{WCSP | 268334 | Thelymitra cyanapicata }} 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 =234}} 3. ^1 2 {{cite journal|last1=Jeanes|first1=Jeffrey A.|title=A revision of the Thelymitra pauciflora R.Br. (Orchidaceae) complex in Australia|journal=Muelleria|date=2004|volume=19|pages=40–43|url=https://www.rbg.vic.gov.au/documents/Muelleria_19,_p19-79,_Jeanes,_Thelymitra_pauciflora_complex.pdf|accessdate=20 May 2018}} 4. ^{{cite web|title=Thelymitra cyanapicata|url= https://id.biodiversity.org.au/instance/apni/589768|publisher=APNI|accessdate=20 May 2018}} 5. ^1 {{cite book|last1=Brown|first1=Roland Wilbur|title=The Composition of Scientific Words|date=1956|publisher=Smithsonian Institution Press|location=Washington, D.C.}} 6. ^1 {{cite web|title=Approved Conservation Advice for Thelymitra cyanapicata (dark-tipped sun-orchid)|url=http://www.environment.gov.au/biodiversity/threatened/species/pubs/81872-conservation-advice.pdf|publisher=Australian Government Department of the Environment|accessdate=19 May 2018}} 7. ^{{cite web|title=Threatened species profile - Thelymitra cyanapicata|url=https://www.naturalresources.sa.gov.au/files/sharedassets/public/plants_and_animals/threatened_plants/pa-fact-thelymitracyanapicata.pdf|publisher=Government of South Australia Department for Environment and Heritage|accessdate=20 May 2018}} External links
4 : Thelymitra|Endemic orchids of Australia|Orchids of South Australia|Plants described in 2004 |
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