Genre qui pr\u00e9sente une taxonomie complexe du fait de la grande vari\u00e9t\u00e9 offerte par les esp\u00e8ces qui le conforment. Il est repr\u00e9sent\u00e9 par environ 25 esp\u00e8ces dans le N. de l\u2019Afrique, nombre susceptible d\u2019\u00eatre revu \u00e0 la hausse ou \u00e0 la baisse en fonction du niveau sp\u00e9cifique ou sous-sp\u00e9cifique attribu\u00e9 aux divers taxons. La plupart correspondent \u00e0 des esp\u00e8ces annuelles ou herbac\u00e9es. Dans la r\u00e9gion sont pr\u00e9sentes 5 esp\u00e8ces \u00e0 tiges ligneuses, arbrisseaux \u00e0 port couch\u00e9, dress\u00e9 ou grimpant, plus 2 autres esp\u00e8ces, ligneuses bien que d\u00e9passant \u00e0 peine 0,5 m de haut. Elles sont:<\/p>\n
A. coriacea <\/strong>Forssk., sous-arbrisseau de 20-30(80) cm de haut, semblable \u00e0 A. halimus<\/em>, \u00e0 feuilles argent\u00e9es sur les deux faces, mais plus petites (jusqu\u2019\u00e0 20 \u00d7 8 mm), parfois suboppos\u00e9es et tr\u00e8s coriaces, \u00e0 valves fructif\u00e8res ovales, plus ou moins cun\u00e9iformes, soud\u00e9es jusqu’\u00e0 la moiti\u00e9 ou un peu plus, trident\u00e9es et l\u00e9g\u00e8rement tuberculeuses. Elle se d\u00e9veloppe sur terrains sableux plus ou moins salins littoraux et sublittoraux, de l\u2019Algerie \u00e0 l\u2019\u00c9gypte.<\/p>\n A. glauca<\/strong> L. [Obione glauca<\/em> (L.) Moq.], de taille encore plus modeste, sous-arbrisseau rampant, prostr\u00e9, \u00e0 rameaux ascendants qui, en marge de son port, se diff\u00e9rencie principalement des esp\u00e8ces pr\u00e9c\u00e9dentes par ses bract\u00e9es fructif\u00e8res triangulaires ou rhombo\u00efdales, dont l\u2019envers est couvert de protub\u00e9rances tr\u00e8s marqu\u00e9es. Plusieurs esp\u00e8ces d\u00e9crites dans le N. de l\u2019Afrique ont \u00e9t\u00e9 cit\u00e9es comme synonymes ou recombin\u00e9es comme vari\u00e9t\u00e9s ou sous-esp\u00e8ces de cette derni\u00e8re du fait de leur similitude. Cette situation fait que la d\u00e9finition de l\u2019aire de r\u00e9partition de A. glauca<\/em> est controvers\u00e9e, bien qu\u2019elle s\u2019\u00e9tende probablement du Maroc \u00e0 l\u2019\u00c9gypte. L\u2019une d\u2019entre elles est A. glauca <\/strong>subsp. mauritanica <\/strong>(Boiss. & Reut.) Dobignard [A. mauritanica <\/em>Boiss. & Reut., A. parvifolia <\/em>Lowe var. mauritanica <\/em>(Boiss. & Reut.) Maire], \u00e0 feuilles grandes (15-30 \u00d7 7-10 mm), discolores, des zones littorales c\u00f4ti\u00e8res, pr\u00e9sente au Maroc, en Alg\u00e9rie, en Tunisie et en Libye. Une autre est A. glauca <\/strong>subsp. ifniensis<\/strong> (Caball.) Rivas Mart. et al<\/em>. [A. ifniensis <\/em>Caball., A. parvifolia <\/em>Lowe], diff\u00e9renci\u00e9e par son port non rampant et la pr\u00e9sence de tubercules plus grands et plus nombreux sur la valve du fruit, pr\u00e9sente de la Mauritanie au S. du Maroc, ainsi qu\u2019aux \u00eeles Canaries et \u00e0 Mad\u00e8re. Enfin, A. glauca <\/strong>subsp. palaestina <\/strong>(Boiss.) Dobignard [A. palaestina <\/em>Boiss., A. stylosa <\/em>Viv., A. alexandrina <\/em>Boiss.] est \u00e9galement \u00e0 port dress\u00e9 ou ascendant, et se d\u00e9veloppe en Libye et en \u00c9gypte.<\/p>\n Aucune de ces esp\u00e8ces n\u2019est actuellement \u00e9valu\u00e9e \u00e0 l\u2019\u00e9chelle mondiale dans la Liste rouge des esp\u00e8ces de l\u2019UICN. En Alg\u00e9rie cependant, A. coriacea<\/em> est incluse dans la Liste des esp\u00e8ces v\u00e9g\u00e9tales non cultiv\u00e9es prot\u00e9g\u00e9es (d\u00e9cret ex\u00e9cutif 12-03 du 4 janvier 2012).<\/p>\n Diverses zones s\u00e8ches voire d\u00e9sertiques du N. de l\u2019Afrique permettent \u00e9galement d\u2019observer d\u2019autres esp\u00e8ces d\u2019arbustes ou arbrisseaux du genre, introduits en raison de leur capacit\u00e9 fourrag\u00e8re, comme c\u2019est le cas de Atriplex inflata<\/em> F. Muell. [A. lindleyi<\/em> subsp. inflata<\/em> (F. Muell.) P.G. Wilson], Atriplex nummularia <\/em>Lindl., originaires d\u2019Australie, et de A. canescens<\/em> (Pursh) Nutt., originaire d\u2019Am\u00e9rique du Nord.<\/p>\n","protected":false},"template":"","short_name":"Atriplex","name_html":"Atriplex<\/strong> L.","short_description":"","references":"Franclet, A. & Le Houerou, H. N., 1971. Les Atriplex en Tunisie et en Afrique du Nord<\/em>. Roma. 249 pp.\r\n\r\nAl-Turki, T.A., Omer, S. Ghafoor, A. 2000. A synopsis of the genus Atriplex<\/em> L. (Chenopodiaceae<\/em>) in Saudi Arabia. Feddes Repertorium<\/em> 111: 261-293.","custom_author":"G. Ben\u00edtez & J. Molero Mesa.","family":false,"species":false,"groups_keys":[{"ID":34486,"post_title":"Arbustes de jusqu\u2019\u00e0 1,2 m de haut. 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