{"id":10946,"date":"2020-11-10T08:58:21","date_gmt":"2020-11-10T08:58:21","guid":{"rendered":"https:\/\/www.northafricatrees.org\/family\/rubiaceae-juss-3\/"},"modified":"2026-07-27T11:10:13","modified_gmt":"2026-07-27T11:10:13","slug":"rubiaceae-juss-3","status":"publish","type":"family","link":"https:\/\/www.northafricatrees.org\/fr\/familles\/rubiaceae-juss-3\/","title":{"rendered":"RUBIACEAE Juss."},"content":{"rendered":"<p>Grande famille compos\u00e9e de 609 genres et environ 13 673 esp\u00e8ces \u00e0 aire de r\u00e9partition tropicale et subtropicale. Il s\u2019agit d\u2019arbres, arbustes et plantes herbac\u00e9es \u00e0 feuilles simples, inflorescences g\u00e9n\u00e9ralement cymeuses et fleurs habituellement hermaphrodites, actinomorphes. La Famille rev\u00eat une tr\u00e8s grande importance \u00e9conomique, avec des plantes telles que le caf\u00e9ier ou le quinquina. Dans le N. de l\u2019Afrique, la plupart de ses esp\u00e8ces sont herbac\u00e9es, fr\u00e9quemment th\u00e9rophytes de sols pauvres, rud\u00e9rales ou adventices. Le seul genre ayant des repr\u00e9sentants ligneux et dot\u00e9s d\u2019un certain port est <a href=\"https:\/\/www.northafricatrees.org\/fr\/genres\/rubia-l\/\"><strong>Rubia<\/strong><\/a>, comprenant principalement des lianes \u00e0 souche plus ou moins ligneuse.<\/p>\n<p>L\u2019autre genre de la famille poss\u00e9dant des esp\u00e8ces ligneuses dans le N. de l&rsquo;Afrique est <strong>Plocama <\/strong>Aiton, avec 4 esp\u00e8ces, toutes cham\u00e6phytes \u00e0 port r\u00e9duit, de 10-50(80) cm, \u00e0 feuilles oppos\u00e9es, fleurs t\u00e9tram\u00e8res et fruit en drupe \u00e0 2 m\u00e9ricarpes. Celle pr\u00e9sentant le port le plus important est <strong>P. reboudiana <\/strong>(Coss. &amp; Durieu) M. Backlund &amp; Thulin [<em>Gaillonia reboudiana<\/em> Coss. &amp; Durieu, <em>Jaubertia reboudiana<\/em> (Coss. &amp; Durieu) Ehrend. &amp; Sch\u00f6nb.-Tem.] (<em>Ara<\/em>. : Sedrat, cheikh), caract\u00e9ris\u00e9e par ses feuilles lin\u00e9aires, subcylindriques \u00e0 cylindriques, charnues, et ses fleurs g\u00e9min\u00e9es envelopp\u00e9es dans un involucre dense form\u00e9 de bract\u00e9es lin\u00e9aires, peu denses mais couvertes de longs cils blancs. Elle appara\u00eet dans les parties les plus s\u00e8ches du S. de l\u2019aire m\u00e9diterran\u00e9enne et du Sahara septentrional du Maroc, de l\u2019Alg\u00e9rie et de la Tunisie. Les 3 autres esp\u00e8ces sont d\u00e9pourvues de ce remarquable involucre. Plus amplement r\u00e9partie, s\u2019\u00e9tendant jusqu\u2019en Libye, <strong>P. calabrica<\/strong> (L.f.) M.Backlund &amp; Thulin [<em>Asperula calabrica<\/em> L.f., <em>Putoria calabrica<\/em> (L.f.) DC., <em>Putoria hispanica <\/em>Boiss. &amp; Reut.] poss\u00e8de des feuilles obovales \u00e0 elliptiques, peu charnues, et des fleurs en cymes de 6-15. <strong>P. brevifolia<\/strong> (Coss. &amp; Dur. ex Pomel) M.Backlund &amp; Thulin (<em>Putoria brevifolia<\/em> Coss. &amp; Dur. ex Pomel), end\u00e9mique du Maroc, se caract\u00e9rise par ses petites feuilles largement lanc\u00e9ol\u00e9es, charnues, et ses fleurs solitaires. Enfin, <strong>P. calycoptera <\/strong>(Decne.) M.Backlund &amp; Thulin [<em>Spermacoce calycoptera<\/em> Decne., <em>Pterogaillonia calycoptera<\/em> (Decne.) Lincz.], du Moyen-Orient, de l\u2019\u00c9gypte au Pakistan, et qui n\u2019appara\u00eet dans la N. de l&rsquo;Afrique qu&rsquo;en \u00c9gypte, se diff\u00e9rencie par ses feuilles lin\u00e9aires, un peu charnues, et ses fleurs g\u00e9n\u00e9ralement solitaires.<\/p>\n<p>Esp\u00e8ces plus ou moins communes et \u00e0 aire de r\u00e9partition vaste. Elles ne sont actuellement pas \u00e9valu\u00e9es \u00e0 l\u2019\u00e9chelle mondiale dans la Liste rouge des esp\u00e8ces de l\u2019UICN. Dans le Livre Rouge de la flore vasculaire du Maroc (Fennane, 2021),<em> P. reboudiana<\/em> y <em>P. calabrica<\/em> ont \u00e9t\u00e9 consid\u00e9r\u00e9es comme Pr\u00e9occupation mineure (LC) et <em>P. brevifolia<\/em> comme Quasi menac\u00e9e (NT).<\/p>\n","protected":false},"template":"","class_list":["post-10946","family","type-family","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>RUBIACEAE Juss. - 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=\"RUBIACEAE Juss. - North Africa Trees\" \/>\n<meta property=\"og:description\" content=\"Grande famille compos\u00e9e de 609 genres et environ 13 673 esp\u00e8ces \u00e0 aire de r\u00e9partition tropicale et subtropicale. Il s\u2019agit d\u2019arbres, arbustes et plantes herbac\u00e9es \u00e0 feuilles simples, inflorescences g\u00e9n\u00e9ralement cymeuses et fleurs habituellement hermaphrodites, actinomorphes. La Famille rev\u00eat une tr\u00e8s grande importance \u00e9conomique, avec des plantes telles que le caf\u00e9ier ou le quinquina. 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