{"id":11058,"date":"2020-11-10T09:01:13","date_gmt":"2020-11-10T09:01:13","guid":{"rendered":"https:\/\/www.northafricatrees.org\/genus\/launaea-cass\/"},"modified":"2023-08-31T09:13:20","modified_gmt":"2023-08-31T09:13:20","slug":"launaea-cass","status":"publish","type":"genus","link":"https:\/\/www.northafricatrees.org\/fr\/genres\/launaea-cass\/","title":{"rendered":"Launaea Cass."},"content":{"rendered":"<p>Genre qui compte environ 60 esp\u00e8ces de l\u2019Ancien Monde, 16 d\u2019entre elles pr\u00e9sentes dans le N. de l\u2019Afrique, r\u00e9parties dans toute la r\u00e9gion. Il s\u2019agit pour la plupart de plantes herbac\u00e9es annuelles ou p\u00e9rennes. Seule <strong>L. arborescens<\/strong> peut \u00eatre consid\u00e9r\u00e9e arbustive, d\u00e9passant 1 m de haut. Bien que de moindre port, deux esp\u00e8ces de la r\u00e9gion sont \u00e9galement ligneuses, \u00e9pineuses et \u00e0 ramifications intriqu\u00e9es, sous-arbustes \u00e9pineux propres des zones arides ou d\u00e9sertiques, <span class=\"HwtZe\" lang=\"fr\"><span class=\"jCAhz ChMk0b\"><span class=\"ryNqvb\">et qui ne d\u00e9passent g\u00e9n\u00e9ralement pas 50 cm de hauteur.<\/span><\/span><\/span><\/p>\n<p><strong>Launaea lanifera <\/strong>Pau (<em>L. acanthoclada<\/em> Maire) est un sous-arbuste de jusqu\u2019\u00e0 45(50)\u00a0cm de haut, tr\u00e8s similaire \u00e0 <em>L. arborescens<\/em> par ses capitules, mais pr\u00e9sente une rosette basale de feuilles bien d\u00e9velopp\u00e9es, bract\u00e9iformes les caulinaires, et \u00e0 aisselles lanugineuses dans les deux cas. Esp\u00e8ce end\u00e9mique ib\u00e9ro-maghr\u00e9bine, elle appara\u00eet dans les matorrals ensoleill\u00e9s des zones arides dans presque tout le Maroc, le N. de l\u2019Alg\u00e9rie et la Tunisie.<\/p>\n<p><strong>Launaea spinosa<\/strong> (Forssk.) Kuntze [<em>Ara<\/em>. (\u00c9gypte)\u00a0: Kabath] est un sous-arbuste de 30-50\u00a0cm de haut, \u00e0 feuilles caulinaires peu nombreuses, \u00e0 plusieurs lobes triangulaires, glauques et glabres, et \u00e0 capitules petits et sessiles pr\u00e9sentant 6-10 fleurs ligul\u00e9es jaunes. Propre des aires pierreuses d\u00e9sertiques du Proche-Orient, elle appara\u00eet dans le N. de l&rsquo;Afrique dans l&rsquo;E. de l&rsquo;\u00c9gypte, Sina\u00ef compris.<\/p>\n","protected":false},"template":"","class_list":["post-11058","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>Launaea Cass. - 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=\"Launaea Cass. - North Africa Trees\" \/>\n<meta property=\"og:description\" content=\"Genre qui compte environ 60 esp\u00e8ces de l\u2019Ancien Monde, 16 d\u2019entre elles pr\u00e9sentes dans le N. de l\u2019Afrique, r\u00e9parties dans toute la r\u00e9gion. Il s\u2019agit pour la plupart de plantes herbac\u00e9es annuelles ou p\u00e9rennes. Seule L. arborescens peut \u00eatre consid\u00e9r\u00e9e arbustive, d\u00e9passant 1 m de haut. 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