| 词条 | Prasophyllum collinum |
| 释义 |
| image = | image_caption = | status_system = | status = | taxon = Prasophyllum collinum | authority= D.L.Jones[1] | display_parents = 3 }} Prasophyllum collinum is a species of orchid endemic to South Australia. It has a single tubular leaf and up to thirty lemon-scented, greenish brown and white flowers. It is only known from the Eyre Peninsula where it grows in sparse woodland. DescriptionPrasophyllum collinum is a terrestrial, perennial, deciduous, herb with an underground tuber and a single shiny, dark green, tube-shaped leaf, {{convert|250-500|mm|in|sigfig=1|abbr=on}} long and {{convert|8-14|mm|in|sigfig=1|abbr=on}} wide with a reddish base. Between twelve and thirty lemon-scented flowers are crowded along a flowering spike {{convert|8-150|mm|in|sigfig=1|abbr=on}} long. The flowers are greenish brown and white and {{convert|8-12|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|9-12.5|mm|in|sigfig=1|abbr=on}} long and {{convert|4-5|mm|in|sigfig=2|abbr=on}} wide with three fine dark lines. The lateral sepals are linear to lance-shaped, {{convert|9-14|mm|in|sigfig=1|abbr=on}} long, {{convert|2-3|mm|in|sigfig=1|abbr=on}} wide, and spread apart from each other. The petals are more or less linear in shape, green to purplish, {{convert|9-12|mm|in|sigfig=1|abbr=on}} long and {{convert|1.5-2|mm|in|sigfig=1|abbr=on}} wide and greenish, but white near the base. The labellum is white, oblong to egg-shaped, {{convert|12-15|mm|in|sigfig=1|abbr=on}} long, {{convert|6-7.5|mm|in|sigfig=1|abbr=on}} wide and turns sharply upwards at more than 90° near its middle. The upturned part of the labellum is wavy or crinkled and there is a yellowish-green callus with a dark green base, in the centre of the labellum. Flowering occurs in September and October.[1]Taxonomy and namingPrasophyllum collinum was first formally described in 2006 by David Jones from a specimen collected near Mount Olinthus and the description was published in Australian Orchid Research.[2] The specific epithet (collina) is a Latin word meaning "of a hill" or "hilly",[3] referring to the hilly terrain where this orchid is often found.[1]Distribution and habitatThis leek orchid grows in sparse woodland, often on the sheltered side of low hills, in central and southern parts of the Eyre Peninsula.[1] References1. ^1 2 {{cite journal|last1=Jones|first1=David L.|title=New taxa of Australian Orchidaceae|journal=Australian Orchid Research|date=2006|volume=5|pages=147–148}} 2. ^1 {{cite web|title=Prasophyllum collinum|url= https://id.biodiversity.org.au/instance/apni/616379|publisher=APNI|accessdate=1 February 2018}} 3. ^{{cite book|last1=Brown|first1=Roland Wilbur|title=The Composition of Scientific Words|date=1956|publisher=Smithsonian Institution Press|location=Washington, D.C.|page = 218}} External links
4 : Prasophyllum|Flora of South Australia|Endemic orchids of Australia|Plants described in 2006 |
| 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。