| 词条 | Acacia alleniana |
| 释义 |
|name = |image =Acacia alleniana Maiden (AM AK74869).jpg |image_caption = A. alleniana foliage |genus = Acacia |species = alleniana |authority = Joseph Maiden |range_map = Acacia allenianaDistMap28.png |range_map_caption =Occurrence data from AVH }} Acacia alleniana is a shrub or tree belonging to the genus Acacia and the subgenus Phyllodineae endemic to northern parts of Australia. DescriptionThe shrub or tree has a spindly open habit and typically grows to a height of around {{convert|5|m|ft|0}}. It has pendulous branches and red-brown coloured slender branchlets. The filiform, terete to quadrangular, phyllodes have a length of {{cvt|12|to|24|cm}} and a width of {{cvt|0.5|to|0.8|mm}}.[1] The simple inflorescences have spherical flower-heads that contain around 35 yellow coloured flowers. The linear brown seed pods that form after flowering are raised over seeds alternately. The pods have a length of up to {{cvt|15|cm}} and a width of {{cvt|3.5|to|5|mm}}. The turgid, dull brown seeds inside have an oblong to elliptic shape and are {{cvt|4|to|6|mm}} in length and {{cvt|2|to|2.5|mm}} wide.[1] TaxonomyThe species was first formally described by the botanists A.J.Ewart and O.B.Davies in 1917 as part of the work by Joseph Maiden Appendix IV: Acacias of the Northern Territory as published in The Flora of the Northern Territory. It was reclassified as Racosperma allenianum by Leslie Pedley in 1987 then transferred back to the Acacia genus in 2001. The shrub is often misidentified as Acacia juncifolia and also as Acacia tenuissima.[2] The species is closely related to Acacia jasperensis and Acacia juncifolia.[1] DistributionIt is native in the Northern Territory from around Darwin south and east in Arnhem Land and on many of the islands in the Gulf of Carpentaria. It's range extends into far north-western Queensland where it is found on hills and sandstone slopes growing in skeletal sandy soils.[1] See alsoList of Acacia speciesReferences1. ^1 2 3 {{cite web|url=http://worldwidewattle.com/speciesgallery/alleniana.php|title=Acacia alleniana|accessdate=6 April 2019|work=World Wide Wattle|publisher=Western Australian Herbarium}} {{Taxonbar|from=Q9561990}}2. ^{{cite web|url=https://bie.ala.org.au/species/http://id.biodiversity.org.au/node/apni/2898989#names|title=Acacia alleniana Maiden|accessdate=6 April 2019|work=Atlas of Living Australia|publisher=Global Biodiversity Information Facility}} 5 : Acacia|Flora of the Northern Territory|Flora of Queensland|Plants described in 1917|Taxa named by Joseph Maiden |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。