{"id":11597,"date":"2020-11-10T09:01:49","date_gmt":"2020-11-10T09:01:49","guid":{"rendered":"https:\/\/www.northafricatrees.org\/genus\/acacia-mill-3\/"},"modified":"2021-09-15T20:02:59","modified_gmt":"2021-09-15T20:02:59","slug":"acacia-mill-3","status":"publish","type":"genus","link":"https:\/\/www.northafricatrees.org\/en\/genuses\/acacia-mill-3\/","title":{"rendered":"Acacia Mill."},"content":{"rendered":"<p>Traditionally, this genus was composed of some 1,500 species worldwide, therefore considered one of the most diversified in the family. However, current phylogeny data obtained from molecular markers have recognised several lineages, proposing a new circumscription of the genus, with the recognition of 5 independent genera: <em>Acacia <\/em>Mill<em>.<\/em>, <em>Senegalia<\/em> Raf., <em>Vachellia<\/em> Wight &amp; Arn., <em>Mariosousa <\/em>Seigler &amp; Ebinger y <em>Acaciella<\/em> Britton &amp; Rose. Such segregation, established in 2011 after the resolution adopted at the International Botanical Congress in Melbourne (from a proposal made at the Seventeenth International Botanical Congress held in Vienna in 2005), is based on a new typification of the genus, since the type species <em>Acacia scorpioides <\/em>(L.) W.Wight [<em>A. nilotica <\/em>(L.) Willd. ex Del.], belonging to a minority lineage, has been replaced by a new type (<em>A.<\/em> <em>penninervis <\/em>Sieber ex DC.), in order to maintain maximum nomenclature stability. Thus, the genus <em>Acacia <\/em>continues to include the largest number of species (<em>c.<\/em> 1,075), most of them confined to Australia (plus a dozen Asian species and a couple of species in Madagascar), while the rest of the species are distributed among the other mentioned genera.<\/p>\n<p>In North Africa all species of the genus are non native species and are cultivated for their wood, for rubber and tannin production, as dunes fixers, for their ornamental or forestry value, etc., some species may appear as adventitious or even locally naturalised or in process of becoming naturalised.<\/p>\n<p>This project aims to recognise the value of the biodiversity of North Africa, while pointing out the need to curb the spread of introduced species, especially invasives, due to the numerous examples of serious disturbances caused by these species to the natural ecosystems and local economic systems. Although we will continue to insist that there are many North African native species that perform similar or better functions than the introduced species, we hereby present an identification key of the most used introduced Acacias, to facilitate their identification, for example, in programmes aimed at the eradication and replacement of introduced species with native species.<\/p>\n","protected":false},"template":"","short_name":"Acacia","name_html":"<strong>Acacia<\/strong> Mill.","short_description":"","references":"Maslin, B.R. <em>et al<\/em>. 2001. <em>Acacia<\/em>. <em>In<\/em>: A.E.Orchard &amp; A.J.G. Wilson (eds.). <em>Flora of Australia<\/em> vols. 11A &amp; 11B.","custom_author":"J.A. Devesa.","family":false,"species":false,"groups_keys":[{"ID":23284,"post_title":"Adult leaves all bipinnate without phyllodes (Subg. 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