| 词条 | Eleocharis ochrostachys |
| 释义 |
|name = |image = Eleocharis ochrostachys.jpg |status =P3 |status_system =DECF |genus = Eleocharis |species = ochrostachys |authority = Steud. |}} Eleocharis ochrostachys, commonly known as spike rush,[1] is a sedge of the Cyperaceae family that is native to Australia and Asia. DescriptionThe rhizomatous perennial herb to grass-like sedge typically grows to a height of {{convert|0.35|to|0.6|m|ft|1}} and produces green flowers.[1] The sedge has short rhizomes and long stolons. The smooth, erect, rigid and terete stems are {{convert|35|to|60|cm|in|0}} in height and have a diameter of {{convert|2|to|5|mm|in|3}}. The leaves have membranous sheaths and are a purplish colour at the base.[1] The flowers are on pale green cylindrical spikelets cylindrical that are wider than the stem. The spikelets are {{convert|10|to|20|mm|in|3|abbr=on}} long and {{convert|3|to|4|mm|in|3|abbr=on}} with firm glumes. After flowering biconvex light brown to grey coloured nuts form that are ribbed on the margins with an obovate to broadly obovate shape that are {{convert|1.5|to|2|mm|in|3|abbr=on}}s in length.[1] TaxonomyThe species was first formally described by the botanist Ernst Gottlieb von Steudel in 1854 as part of the work Synopsis Plantarum Glumacearum. Several synonyms are known including; Eleocharis variegata var. laxiflora, Scirpus laxiflorus and Eleocharis difformis.[5] DistributionIt is found in and around swampy areas throughout its extensive range. The range of the plant includes coastal areas in Australia, India, China, Japan, Micronesia and Melanesia. In Australia the plant is often in closed forest or in Melaleuca dominated swamps in wet areas such as swamps, creek-lines or damp depressions.[2] The sedge has a scattered distribution in northern Australia through parts of the Kimberley region of Western Australia, the top end of the Northern Territory, parts of northern Queensland and coastal parts of New South Wales.[3] References1. ^{{FloraBase|name=Eleocharis ochrostachys|id=14538}} {{Taxonbar|from=Q11086171}}2. ^1 2 3 {{cite web|url=http://keys.trin.org.au/key-server/data/0e0f0504-0103-430d-8004-060d07080d04/media/Html/taxon/Eleocharis_ochrostachys.htm|title=Eleocharis ochrostachys|accessdate=26 October 2018|publisher=Australian Tropical Rainforest Plants}} 3. ^1 {{cite web|url=https://bie.ala.org.au/species/http://id.biodiversity.org.au/node/apni/2917336|title=Eleocharis ochrostachys Steud.|accessdate=26 October 2018|work=Atlas of Living Australia|publisher=Global Biodiversity Information Facility}} 3 : Plants described in 1854|Flora of Western Australia|Eleocharis |
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