| 词条 | Pterostylis pedunculata |
| 释义 |
| name = Maroonhood | image = Pterostylis pedunculata (15693702310) - cropped.jpg | image_caption = Pterostylis erecta growing in the Tarkine | genus = Pterostylis | species = pedunculata | authority = R.Br.[1] | synonyms_ref = | synonyms = }} Pterostylis pedunculata, commonly known as the upright maroonhood, is a species of orchid endemic to south-eastern Australia. Flowering plants have a rosette of two to six stalked leaves and a single green flower which is white near its base and tinged with reddish brown to black and with a gap between the petals and lateral sepals. It is common and widespread in a range of habitats. DescriptionPterostylis pedunculata is a terrestrial, perennial, deciduous, herb with an underground tuber. Flowering plants have a rosette of between two and six stalked leaves, each leaf 10–65 mm long and 5–20 mm wide. A single flower 15–20 mm long and 5–7 mm wide is borne on a spike 60–250 mm high. The flowers are green, white near the base with reddish-brown to black tinges near the tip. The dorsal sepal and petals are fused, forming a hood or "galea" over the column but the dorsal sepal is slightly longer than the petals and has a sharp point on its end. There is a gap between the petals and the lateral sepals, which have thread-like tips 16–30 mm long. The sinus between the lateral sepals has a deep, V-shaped notch in the centre. The labellum is 5–7 mm long, about 3 mm wide, reddish-brown, egg-shaped, straight and just visible above the sinus. Flowering occurs from July to November.[1][2][3][4]Taxonomy and namingPterostylis pedunculata was first formally described in 1810 by Robert Brown and the description was published in the Prodromus Florae Novae Hollandiae et Insulae Van Diemen.[5][6] The specific epithet (pedunculata) is a Latin word meaning "small, slender stalk".[7]Distribution and habitatThe maroonhood is widespread and common in moist, sheltered places in forest but also grows in coastal scrub. It is found from south-eastern Queensland to south-eastern South Australia and to Tasmania. In New South Wales it mostly occurs in coastal and near-coastal districts but extends as far inland as the Australian Capital Territory.[1][2][3][4][8] References1. ^1 {{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=978-1877069123|page =302}} {{Taxonbar|from=Q15492189}}2. ^1 {{cite web|last1=Jones|first1=David L.|title=Pterostylis pedunculata|url=http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Pterostylis~pedunculata|publisher=Royal Botanic Garden Sydney: plantnet|accessdate=24 May 2017}} 3. ^1 {{cite web|last1=Jeanes|first1=Jeff|title=Pterostylis pedunculata|url=https://vicflora.rbg.vic.gov.au/flora/taxon/5db59e42-c0b3-4cb6-aeed-14d4a30c92c5|publisher=Royal Botanic Gardens Victoria: vicflora|accessdate=24 May 2017}} 4. ^1 {{cite web|title=Pterostylis pedunculata|url=http://www.flora.sa.gov.au/cgi-bin/speciesfacts_display.cgi?form=speciesfacts&family=&genus=Pterostylis&species=pedunculata&iname=&submit=Display|publisher=State Herbarium of South Australia: eflora SA|accessdate=24 May 2017}} 5. ^1 {{cite web|title=Pterostylis pedunculata|url=https://id.biodiversity.org.au/instance/apni/488213|publisher=APNI|accessdate=24 May 2017}} 6. ^{{cite book|last1=Brown|first1=Robert|title=Prodromus Florae Novae Hollandiae et Insulae Van Diemen|date=1810|location=London|page=327|url=https://www.biodiversitylibrary.org/item/21871#page/195/mode/1up|accessdate=22 May 2017}} 7. ^{{cite book|last1=Brown|first1=Roland Wilbur|title=The Composition of Scientific Words|date=1956|publisher=Smithsonian Institution Press|location=Washington, D.C.|page =751}} 8. ^{{cite journal|last1=Jones|first1=David L.|title=Contributions to Tasmanian Orchidology|journal=Australian Orchid Research|date=1998|volume=3|pages=148–149}} 8 : Pterostylis|Endemic orchids of Australia|Orchids of the Australian Capital Territory|Orchids of New South Wales|Orchids of South Australia|Orchids of Queensland|Orchids of Victoria (Australia)|Plants described in 1810 |
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