{"id":11493,"date":"2020-11-10T09:01:43","date_gmt":"2020-11-10T09:01:43","guid":{"rendered":"https:\/\/www.northafricatrees.org\/genus\/polygala-l\/"},"modified":"2026-06-03T18:26:58","modified_gmt":"2026-06-03T18:26:58","slug":"polygala-l","status":"publish","type":"genus","link":"https:\/\/www.northafricatrees.org\/fr\/genres\/polygala-l\/","title":{"rendered":"Polygala L."},"content":{"rendered":"<p>Genre regroupant 12 taxons dans le N. de l\u2019Afrique, la plupart herbac\u00e9s, <span class=\"HwtZe\" lang=\"fr\"><span class=\"jCAhz ChMk0b\"><span class=\"ryNqvb\">mais avec 3 taxons l\u00e9g\u00e8rement ligneux \u00e0 la base des tiges.<\/span><\/span><\/span><\/p>\n<p><strong>P. sinaica <\/strong>Botsch., arbrisseau \u00e9pineux \u00e0 feuilles caduques de jusqu\u2019\u00e0 0,5 m, velout\u00e9-pubescent. Rac\u00e8mes terminaux l\u00e2ches de jusqu\u2019\u00e0 10 fleurs, calice \u00e0 s\u00e9pales externes membraneux pourvus d&rsquo;une large nervure verte, les internes (ailes) blancs, elliptiques, \u00e0 nervation dense brun-verd\u00e2tre D\u00e9serts pierreux, lit secs des oueds et fissures des rochers, dans le Sina\u00ef, le N\u00e9guev, en Palestine et dans la p\u00e9ninsule arabique.<\/p>\n<p><strong>P. aschersoniana <\/strong>Chodat, suffrutex pr\u00e9sentant des feuilles crassulescentes \u00e0 bord r\u00e9volut\u00e9, glabres, lin\u00e9aires-lanc\u00e9ol\u00e9es, et des rac\u00e8mes \u00e0 fleurs peu nombreuses, s\u00e9pales lin\u00e9aires \u00e0 nervures vertes tr\u00e8s visibles. End\u00e9mique notable de la zone montagneuse du N.-E. de la Lybie (Cyr\u00e9na\u00efque), du massif de l\u2019Akhdar jusqu\u2019\u00e0 Derna, dont les parents les plus proches se trouvent en Sicile, en Sardaigne et dans les montagnes de la Gr\u00e8ce et de la mer \u00c9g\u00e9e.<\/p>\n<p><strong>P. rupestris <\/strong>Pourr. (incl. <em>P. saxatilis <\/em>Desf.), tr\u00e8s diff\u00e9rente des pr\u00e9c\u00e9dentes de par son caract\u00e8re herbac\u00e9, \u00e0 feuilles membraneuses, non coriaces et non caduques ; s\u00e9pales externes et ailes persistants, p\u00e9tales sup\u00e9rieurs plus grands que la car\u00e8ne, et cr\u00eate tr\u00e8s d\u00e9velopp\u00e9e et fimbri\u00e9e. Il s\u2019agit d\u2019une esp\u00e8ce peu commune, mais amplement r\u00e9partie dans l\u2019aire m\u00e9diterran\u00e9enne non steppique du Maroc, de l\u2019Alg\u00e9rie et de la Tunisie. En marge de la subsp. <strong>rupestris <\/strong>sont reconnues la subsp. <strong>font-queri <\/strong>Pau ex Font Quer, end\u00e9mique du Maroc, et la subsp. <strong>oxycoccoides <\/strong>(Desf.) Batt., plante herbac\u00e9e naine \u00e0 feuilles crassulescentes obov\u00e9es, pr\u00e9sente en Alg\u00e9rie et au Maroc.<\/p>\n<p>Elles ne sont actuellement pas \u00e9valu\u00e9es \u00e0 l\u2019\u00e9chelle mondiale dans la Liste rouge des esp\u00e8ces de l\u2019UICN. <span class=\"HwtZe\" lang=\"fr\"><span class=\"jCAhz ChMk0b\"><span class=\"ryNqvb\"><em>P. aschersonia<\/em> a une aire de r\u00e9partition tr\u00e8s limit\u00e9e et est probablement menac\u00e9e. <\/span><\/span><\/span><em>P. sinaica <\/em><span class=\"VIiyi\" lang=\"fr\"><span class=\"JLqJ4b ChMk0b\" data-language-for-alternatives=\"fr\" data-language-to-translate-into=\"es\" data-phrase-index=\"0\">a \u00e9t\u00e9 r\u00e9cemment catalogu\u00e9e comme<\/span><\/span> \u00ab En danger \u00bb (El-Khalafy <em>et al<\/em>. in <em>Phytotaxa<\/em> 502(3): 237-258, 2021).<\/p>\n","protected":false},"template":"","class_list":["post-11493","genus","type-genus","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Polygala L. - North Africa Trees<\/title>\n<meta name=\"robots\" content=\"noindex, follow\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Polygala L. - North Africa Trees\" \/>\n<meta property=\"og:description\" content=\"Genre regroupant 12 taxons dans le N. de l\u2019Afrique, la plupart herbac\u00e9s, mais avec 3 taxons l\u00e9g\u00e8rement ligneux \u00e0 la base des tiges. 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