| 词条 | Adenochilus nortonii |
| 释义 |
| name = White gnome orchid | image = | image_caption = | regnum = Plantae | unranked_divisio = Angiosperms | unranked_classis = Monocots | ordo = Asparagales | familia = Orchidaceae | subfamilia = Orchidoideae | genus = Adenochilus | species = A. nortonii | binomial = Adenochilus nortonii | binomial_authority = Fitzg.[1] | synonyms_ref =[1] | synonyms= Caladenia nortonii (Fitzg.) F.Muell. }} Adenochilus nortonii, commonly known as the white gnome orchid,[3] is a plant in the orchid family Orchidaceae and is endemic to a few isolated locations in New South Wales. It has a long, thin underground rhizome, a single leaf and a single white flower with reddish glandular hairs on the outside. Its labellum has red bars and a central band of yellow calli. DescriptionAdenochilus nortonii is a terrestrial, perennial, deciduous, herb with a long, thin, horizontal rhizome and a single egg-shaped to lance-shaped leaf, {{convert|15-35|mm|in|sigfig=1|abbr=on}} long and {{convert|10-16|mm|in|sigfig=1|abbr=on}} wide with reddish spots on the lower surface. A single white flower {{convert|15-20|mm|in|sigfig=1|abbr=on}} long and {{convert|20-30|mm|in|sigfig=1|abbr=on}} wide is borne on the end of a flowering spike {{convert|60-120|mm|in|sigfig=1|abbr=on}} tall. The outer surface of the sepals and petals is covered with reddish glandular hairs. The dorsal sepal is broad elliptic in shape, {{convert|12-16|mm|in|sigfig=1|abbr=on}} long, {{convert|7-8|mm|in|sigfig=2|abbr=on}} wide and forms a hood over the labellum and column. The lateral sepals are {{convert|13-16|mm|in|sigfig=1|abbr=on}} long, {{convert|4-5|mm|in|sigfig=2|abbr=on}} wide and spread widely apart from each other. The petals are {{convert|10-14|mm|in|sigfig=1|abbr=on}} long, about {{convert|3|mm|in|sigfig=1|abbr=on}} wide and slightly erect. The labellum is strongly curved when viewed from the side, about {{convert|5|mm|in|sigfig=1|abbr=on}} long and {{convert|4-5|mm|in|sigfig=2|abbr=on}} wide, with three lobes with red bars. The middle lobe is narrow with a dense central band of yellow calli and the side lobes are broader. Flowering occurs in November and December.[2][3]Taxonomy and namingAdenochilus nortonii was first formally described in 1876 by Robert FitzGerald from a specimen collected near Mount Victoria and the description was published in his book Australian Orchids.[4] The specific epithet (nortonii) honours James Norton (1824-1906), an amateur botanist and friend of Fitzgerald.[4][5]Distribution and habitatThe white gnome orchid grows in rock crevices, in sphagnum and near creeks in beech forest, usually above {{convert|900|m|ft|sigfig=1|abbr=on}}. It is found in the Blue Mountains, Barrington Tops and Point Lookout areas.[2][3] References1. ^1 {{WCSP | 3051 | Adenochilus nortonii }} {{Taxonbar|from=Q9582823}}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 =266}} 3. ^1 {{cite web|title=Adenochilus nortonii|url=http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Caladenia~alpina|publisher=Royal Botanic Garden, Sydney: plantNET|accessdate=27 September 2016}} 4. ^1 {{cite web|title=Adenochilus nortonii|url= https://id.biodiversity.org.au/instance/apni/489411|publisher=APNI|accessdate=27 June 2018}} 5. ^{{cite web |title=Norton, James (1824-1906) |url=http://www.anbg.gov.au/biography/norton-james.html |publisher=Australian National Herbarium |accessdate=27 June 2018}} 3 : Adenochilus|Plants described in 1876|Orchids of New South Wales |
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