| 词条 | Prasophyllum nitidum |
| 释义 |
| name = Shining leek orchid | image = | image_caption = | taxon = Prasophyllum nitidum | authority= D.L.Jones & R.J.Bates[1] | display_parents = 3 | synonyms_ref= | synonyms= }} Prasophyllum nitidum, commonly known as the shining leek orchid, is a species of orchid endemic to southern continental Australia. It has a single tube-shaped leaf and up to twenty maroon, magenta or purple and green flowers with a pale purple to maroon labellum. It is a recently described plant, previously included with P. fitzgeraldii, but distinguished from that species by its shorter flower spike, glossy flowers and shining, raised labellum callus. It grows in the south-east of South Australia and in a single location in western Victoria. DescriptionPrasophyllum nitidum is a terrestrial, perennial, deciduous, herb with an underground tuber and a single tube-shaped, shiny, green leaf which is {{convert|100-250|mm|in|sigfig=1|abbr=on}} long and {{convert|3-4|mm|in|sigfig=1|abbr=on}} wide near its maroon-tinged base. Between five and twenty scented, maroon, magenta or purple and green flowers are loosely arranged along a flowering spike {{convert|30-70|mm|in|sigfig=1|abbr=on}} long, reaching to a height of {{convert|400|mm|in|sigfig=1|abbr=on}}. The flowers are {{convert|5-7|mm|in|sigfig=1|abbr=on}} long and {{convert|3-4|mm|in|sigfig=1|abbr=on}} wide. As with others in the genus, the flowers are inverted so that the labellum is above the column rather than below it. The dorsal sepal is lance-shaped to egg-shaped, {{convert|5-7|mm|in|sigfig=1|abbr=on}} long and {{convert|2-3|mm|in|sigfig=1|abbr=on}} wide. The lateral sepals are greenish-brown or maroon, linear to lance-shaped, {{convert|5-8|mm|in|sigfig=1|abbr=on}} long, {{convert|1-2|mm|in|sigfig=1|abbr=on}} wide, mostly free from each other and curved backwards. The petals are purplish maroon, oblong, {{convert|5-6|mm|in|sigfig=2|abbr=on}} long, about {{convert|1.5|mm|in|sigfig=1|abbr=on}} wide and spread widely. The labellum is pale purple to maroon, oblong to egg-shaped, {{convert|5-6|mm|in|sigfig=2|abbr=on}} long, {{convert|2-4|mm|in|sigfig=1|abbr=on}} wide and turns sharply upward at 90° about half-way along. The upturned part is wavy or crinkled with hair-like papillae on the edges. There is a raised, oblong to egg-shaped, shiny callus which is darker than the labellum and which is in the centre of the labellum and extending almost to its tip. Flowering occurs in late September and October.[1][2]Taxonomy and namingPrasophyllum nitidum was first formally described in 2017 by David Jones and Robert Bates and the description was published in Australian Orchid Review from a specimen collected in the Desert Camp Conservation Park.[3] The specific epithet (nitidum) is a Latin word meaning "shining", "glittering" or "bright",[4] referring to the shiny flowers.[1]Distribution and habitatThe shining leek orchid mostly grows in woodland on fertile plains in the mid to upper south-east of South Australia and near Edenhope in far western Victoria.[1][2] References1. ^1 2 {{cite journal|last1=Jones|first1=David L.|last2=Bates|first2=Robert J.|title=Five new species in the complex of taxa surrounding Prasophyllum fitzgeraldii (Orchidaceae)|journal=Australian Orchid Review|date=2017|volume=82|issue=3|pages=38–39}} 2. ^1 {{cite web|last1=Walsh|first1=Neville|title=Prasophyllum nitidum|url=https://vicflora.rbg.vic.gov.au/flora/taxon/c061b3c8-0267-4876-9b86-037293a64a8d|publisher=Royal Botanic Gardens Victoria|accessdate=16 January 2018}} 3. ^1 {{cite web|title=Prasophyllum nitidum|url= https://id.biodiversity.org.au/instance/apni/9181764|publisher=APNI|accessdate=16 January 2018}} 4. ^{{cite book|last1=Lewis|first1=Charlton T.|last2=Short|first2=Charles|title=A Latin dictionary|date=1879|publisher=Oxford University Press|url=http://www.perseus.tufts.edu/hopper/text?doc=Perseus:text:1999.04.0059:entry=nitidus|accessdate=16 January 2018}} External links
5 : Prasophyllum|Flora of South Australia|Flora of Victoria (Australia)|Plants described in 2017|Endemic orchids of Australia |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。