| 词条 | Gahnia sieberiana |
| 释义 |
|name = Red-fruit saw-sedge |image = 2_metre_tall_swamp_plant_West_Head_Road.JPG |image_caption = Ku-ring-gai Chase National Park, Australia |genus = Gahnia |species = sieberiana |authority = Kunth[1] }}Gahnia sieberiana, commonly known as the red-fruit saw-sedge, is a tussock-forming perennial plant in the family Cyperaceae, endemic to Australia. It is a widespread plant that favours damp sunny sites. Many insect larvae have been recorded feeding on the red-fruit saw-sedge. It may grow over {{convert|2|m|0}} tall.[2]Gahnia sieberiana was described by German botanist Carl Sigismund Kunth in 1837.[1] It is one of the many species named in honour of the Bohemian collector, Franz Wilhelm Sieber.[2]Gahnia sieberiana grows as a tall strappy tussock to {{convert|2|m|0}} high and wide, with rough flat leaves.[3] The leaf margins have tiny serrations that are sharp and can cut the hands of those handling the plant.[4] The tall black flowers grow in spikes from the centre of the plant and can rise another metre above the clump,[5] appearing in spring and summer. They are followed by shiny red or red-brown round nuts, which measure {{convert|2.5|to|4.0|mm|abbr=on|1}} long, {{convert|1.5|to|2.0|mm|abbr=on|1}} in diameter.[3]Gahnia sieberiana is found across eastern Australia, from Tasmania to North Queensland, as well as Malesia, from sea level to an altitude of {{convert|1200|m|abbr=on}}.[4] It is found on clay and sandy soils.[6] Seeds appear to germinate after bushfire.[6] The caterpillars of the dingy grass-skipper (Toxidia peron),{{Sfnp|Braby|2004|p= 66}} montane sedge-skipper (Oreisplanus perornata),{{Sfnp|Braby|2004|p=68}} silver sedge-skipper (Hesperilla crypsargyra),{{Sfnp|Braby|2004| p= 70 }} flame sedge-skipper (Hesperilla idothea), golden-haired sedge-skipper (Hesperilla chrysotricha),{{Sfnp|Braby|2004| p= 74 }} heath sand-skipper (Antipodia chaostola),{{Sfnp|Braby|2004| p= 80 }} sword-grass brown (Tisiphone abeona)[6] and northern sword-grass brown (Tisiphone helena) feed on the leaves.{{Sfnp|Braby|2004| p= 158 }} For Australian gardens, Gahnia sieberiana has been suggested as a native replacement for pampas grass (Cortaderia selloana), which is a noxious weed there.[5] Cultivation is hampered by difficulties in propagation by seed. Clumps can be divided to make more plants.[5] References1. ^1 {{APNI | name = Gahnia sieberiana {{Au|Kunth}} | id = 45160 |accessdate= 16 Mar 2013 }} 2. ^1 {{Cite book | last1= Robinson | first1= Les | year= 2003 | title= Field Guide to the Native Plants of Sydney | page= 290 | isbn= 978-0-7318-1211-0 }} 3. ^1 {{Cite web | url= http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Gahnia~sieberiana | last1= Wilson | first1 = Karen L. | year= 2001 | title= Gahnia sieberiana – New South Wales Flora Online | work= PlantNET – The Plant Information Network System | location= Sydney, Australia | publisher= The Royal Botanic Gardens and Domain Trust | version= 2.0 | accessdate= 29 May 2013 }} 4. ^1 {{RFK6.1 | url= http://keys.trin.org.au:8080/key-server/data/0e0f0504-0103-430d-8004-060d07080d04/media/Html/taxon/Gahnia_sieberiana.htm | name= Gahnia sieberiana | accessdate= 16 Mar 2013 }} 5. ^1 2 {{Cite web|url=http://asgap.org.au/g-sie.html |title=Gahnia sieberiana |last1=Walters |first1=Brian |date=August 2010 |publisher=Australian Native Plants Society (Australia) |accessdate=23 May 2012 |deadurl=yes |archiveurl=https://web.archive.org/web/20120329202820/http://asgap.org.au/g-sie.html |archivedate=29 March 2012 |df= }} 6. ^1 2 {{Cite journal | last1= Benson | first1= Doug | last2= McDougall | first2= Lyn | year= 2002 | title= Ecology of Sydney Plant Species Part 9: Monocotyledon families Agavaceae to Juncaginaceae | journal= Cunninghamia | volume= 7 | issue= 4 | pages= 695–939 (see p. 822) | url= http://www.rbgsyd.nsw.gov.au/__data/assets/pdf_file/0003/58557/Cun7Ben695.pdf | archive-url= https://web.archive.org/web/20090614173621/http://www.rbgsyd.nsw.gov.au/__data/assets/pdf_file/0003/58557/Cun7Ben695.pdf | dead-url= yes | archive-date= 2009-06-14 }} Cited text
7 : Taxa named by Carl Sigismund Kunth|Gahnia|Flora of New South Wales|Flora of South Australia|Flora of Victoria (Australia)|Poales of Australia|Plants described in 1837 |
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