| 词条 | Pterostylis auriculata |
| 释义 |
| name = Greenhood | image = | image_caption = Pterostylis auriculata growing on Kapiti Island | genus = Pterostylis | species = auriculata | authority = Colenso[1] }} Pterostylis auriculata is a species of orchid endemic to New Zealand. Unlike many other greenhood orchids, this species lacks a rosette of leaves but instead only has leaves on the flowering stem. All parts of the plant are glossy and there is a single green flower with a reddish tinge. DescriptionPterostylis auriculata is a terrestrial, perennial, deciduous, herb with an underground tuber and has four glossy green leaves on the flowering stem. The leaves are lance-shaped, {{convert|125-180|mm|in|sigfig=1|abbr=on}} long, {{convert|10-15|mm|in|sigfig=1|abbr=on}} wide and the uppermost leaf is usually higher than the flower. There is a single glossy green flower with reddish tips. The dorsal sepal and petals are fused, forming a hood or "galea" over the column. The dorsal sepal is narrow egg-shaped, {{convert|15-18|mm|in|sigfig=1|abbr=on}} long with a sharp tip. The lateral sepals are erect, have narrow tips up to {{convert|25|mm|in|sigfig=1|abbr=on}} long and spread slightly apart from each other. The labellum is red, {{convert|10|mm|in|sigfig=1|abbr=on}} long, {{convert|2-5|mm|in|sigfig=1|abbr=on}} wide and curved with a prominent mid-rib. Flowering occurs from October to November.[2][3]Taxonomy and namingPterostylis auriculata was first formally described in 1889 by William Colenso and the description was published in Transactions and Proceedings of the New Zealand Institute.[4][5] The specific epithet (auriculata) is the diminutive form of the Latin word "auris" meaning "ear", hence "little ear".[6]Distribution and habitatThis greenhood grows in damp, heavily shaded forest on southern parts of South Island of New Zealand and on Chatham, Stewart and Kapiti Islands.[2][3] References1. ^{{WCSP | 170507 | Pterostylis auriculata }} {{Taxonbar|from=Q15492118}}2. ^1 {{cite web|last1=de Lange|first1=Peter James|title=Pterostylis auriculata|url=http://www.nzpcn.org.nz/flora_details.aspx?ID=772|publisher=New Zealand Plant Conservation Network|accessdate=18 June 2017}} 3. ^1 {{cite web|title=Pterostylis auriculata|url=http://www.nativeorchids.co.nz/Species/Pterostylis_auriculata.html|publisher=New Zealand Native Orchid Group|accessdate=18 June 2017}} 4. ^{{WCSP | 170507 | Pterostylis auriculata }} 5. ^{{cite journal|last1=Colenso|first1=William|title=A description of some newly-discovered Phænogamic plants, being a further contribution towards the making-known the botany of New Zealand|journal=Transactions and Proceedings of the New Zealand Institute|date=1889|volume=22|page=489|url=http://rsnz.natlib.govt.nz/image/rsnz_22/rsnz_22_00_0577_0489_ac_01.html|accessdate=18 June 2017}} 6. ^{{cite book|last1=Brown|first1=Roland Wilbur|title=The Composition of Scientific Words|date=1956|publisher=Smithsonian Institution Press|location=Washington, D.C.|page =289}} 3 : Pterostylis|Orchids of New Zealand|Plants described in 1889 |
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