| 词条 | Prasophyllum paulinae |
| 释义 |
| name = Pauline's leek orchid | image = | image_caption = | status_system = DECF | status = P1 | taxon = Prasophyllum paulinae | authority= D.L.Jones and M.A.Clem.[1] | display_parents = 3 | synonyms= }} Prasophyllum paulinae, commonly known as Pauline's leek orchid, is a species of orchid endemic to the south-west of Western Australia. It is a small, rare leek orchid with a single smooth, tubular leaf and up to seventy yellowish-green and purple flowers. DescriptionPrasophyllum paulinae is a terrestrial, perennial, deciduous, herb with an underground tuber and a single smooth dark green, tube-shaped leaf with a whitish base and {{convert|100-180|mm|in|sigfig=1|abbr=on}} long and {{convert|4-5|mm|in|sigfig=2|abbr=on}} in diameter. Between twenty five and seventy flowers are arranged on a flowering stem {{convert|80-250|mm|in|sigfig=1|abbr=on}} long reaching to a height of {{convert|150-400|mm|in|sigfig=1|abbr=on}}. The flowers are greenish-yellow and purple, about {{convert|6|mm|in|sigfig=1|abbr=on}} long and {{convert|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 about {{convert|4|mm|in|sigfig=1|abbr=on}} long and {{convert|2|mm|in|sigfig=1|abbr=on}} wide and the lateral sepals are about {{convert|4|mm|in|sigfig=1|abbr=on}} long and {{convert|1-1.5|mm|in|sigfig=1|abbr=on}} wide and fused at their bases but with elongated tips. The petals are about {{convert|3|mm|in|sigfig=1|abbr=on}} long and {{convert|1|mm|in|sigfig=1|abbr=on}} wide and turn forwards. The labellum has reddish or purplish markings and is about {{convert|5|mm|in|sigfig=1|abbr=on}} long, {{convert|4|mm|in|sigfig=1|abbr=on}} wide and turns sharply upwards near its middle. The edges of the labellum are reddish and crinkled and there is a dark callus in its centre, extending almost to the tip. Flowering occurs from September to November and is enhanced by fires the previous summer.[1][2][3]Taxonomy and namingPrasophyllum paulinae was first formally described in 1996 by David Jones and Mark Clements and the description was published in Nuytsia.[4] The specific epithet (paulinae) honours Pauline Heberle.[3]Distribution and habitatPauline's leek orchid grows with grasses and sedges in swamps near Albany in the Jarrah Forest biogeographic region.[2][3][5] ConservationPrasophyllum paulinae is classified as "Priority One" by the Government of Western Australia Department of Parks and Wildlife[5] meaning that it is known from only one or a few locations which are potentially at risk.[6]References1. ^{{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 =219}} 2. ^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=357|edition=3rd}} 3. ^1 2 {{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=325}} 4. ^1 {{cite web|title=Prasophyllum paulinae|url= https://id.biodiversity.org.au/instance/apni/568462|publisher=APNI|accessdate=12 December 2017}} 5. ^1 {{FloraBase|name=Prasophyllum paulinae|id=16689}} 6. ^{{cite web|title=Conservation codes for Western Australian Flora and Fauna|url=http://www.dpaw.wa.gov.au/images/documents/plants-animals/threatened-species/Listings/conservation_code_definitions.pdf|publisher=Government of Western Australia Department of Parks and Wildlife|accessdate=12 December 2017}} External links
4 : Prasophyllum|Endemic flora of Western Australia|Endemic orchids of Australia|Plants described in 1996 |
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