| 词条 | Prasophyllum candidum |
| 释义 |
| name = Kiandra leek orchid | image = | image_caption = | status_system = | status = | taxon = Prasophyllum candidum | authority= R.J.Bates & D.L.Jones[1] | display_parents = 3 }} Prasophyllum candidum, commonly known as the Kiandra leek orchid, is a species of orchid endemic to eastern Australia. It has a single tubular, yellowish-green leaf and up to forty scented, bright white to greenish flowers. It grows in subalpine areas at altitudes above {{convert|1000|m|ft|sigfig=1|abbr=on}} in New South Wales and Victoria although in the latter state it is considered to be a form of P. odoratum. DescriptionPrasophyllum candidum is a terrestrial, perennial, deciduous, herb with an underground tuber and a single tube-shaped, yellowish-green leaf which is {{convert|200-400|mm|in|sigfig=1|abbr=on}} long and {{convert|8-22|mm|in|sigfig=1|abbr=on}} wide. Up to forty fragrant, bright white to greenish flowers are densely crowded along a flowering spike which is {{convert|60-100|mm|in|sigfig=1|abbr=on}} long. As with other leek orchids, the flowers are inverted so that the labellum is above the column rather than below it. The dorsal sepal is linear to egg-shaped, {{convert|8-12|mm|in|sigfig=1|abbr=on}} long, about {{convert|4|mm|in|sigfig=1|abbr=on}} wide and curves inwards. The lateral sepals are linear to lance-shaped, {{convert|8-12|mm|in|sigfig=1|abbr=on}} long, about {{convert|2.5|mm|in|sigfig=1|abbr=on}} wide and spread widely apart from each other. The petals are linear to lance-shaped, {{convert|8-10.5|mm|in|sigfig=1|abbr=on}} long, about {{convert|3|mm|in|sigfig=1|abbr=on}} wide and have a dark central stripe. The labellum is oblong to egg-shaped, {{convert|9-12|mm|in|sigfig=1|abbr=on}} long, {{convert|6-7|mm|in|sigfig=2|abbr=on}} wide, turns upwards and reaches above the lateral sepals. The edges of the labellum are very ruffled and there is a yellowish-green, grooved callus in its centre. Flowering occurs from December to early February.[1][2]Taxonomy and namingPrasophyllum candidum was first formally described in 1991 by Robert Bates and David Jones from a specimen collected between Tumut and Adaminaby and the description was published in Australian Orchid Research.[3][2] The specific epithet (candidum) is a Latin word meaning "shining white" or "bright",[4] referring to the colour of the flowers.[2]Distribution and habitatThis leek orchid grows in sub-alpine grassland above {{convert|1000|m|ft|sigfig=1|abbr=on}} in south-western New South Wales and Victoria.[1][2] The Victorian Herbarium considers this species to be a form of P. odoratum.[5] References1. ^1 {{cite web|last1=Bernhardt|first1=Peter|last2=Rowe|first2=Ross|title=Prasophyllum candidum|url=http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Prasophyllum~candidum|publisher=Royal Botanic Garden Sydney - plantnet|accessdate=3 November 2017}} 2. ^1 2 3 {{cite journal|last1=Jones|first1=David L.|title=New taxa of Australian Orchidaceae|journal=Australian Orchid Research|date=1991|volume=2|pages=76–77}} 3. ^1 {{cite web|title=Prasophyllum candidum|url= https://id.biodiversity.org.au/instance/apni/551724|publisher=APNI|accessdate=3 November 2017}} 4. ^{{cite book|last1=Brown|first1=Roland Wilbur|title=The Composition of Scientific Words|date=1956|publisher=Smithsonian Institution Press|location=Washington, D.C.|page = 480}} 5. ^{{cite web|title=Prasophyllum candidum|url=https://vicflora.rbg.vic.gov.au/flora/taxon/bd5a3e22-26de-490d-afe9-c7be02a1bba8|publisher=Royal Botanic Gardens Victoria|accessdate=3 November 2017}} External links
5 : Prasophyllum|Flora of New South Wales|Flora of Victoria (Australia)|Endemic orchids of Australia|Plants described in 1991 |
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