{"id":44986,"date":"2023-01-22T19:28:33","date_gmt":"2023-01-22T19:28:33","guid":{"rendered":"https:\/\/www.northafricatrees.org\/especies\/rhizophora-racemosa-g-mey\/"},"modified":"2023-01-22T19:32:50","modified_gmt":"2023-01-22T19:32:50","slug":"rhizophora-racemosa-g-mey","status":"publish","type":"species","link":"https:\/\/www.northafricatrees.org\/fr\/esp\u00e8ce\/rhizophora-racemosa-g-mey\/","title":{"rendered":"Rhizophora racemosa G. Mey."},"content":{"rendered":"<p>Arbre ou arbuste \u00e0 feuilles persistantes atteignant 8(15) m de haut dans la premi\u00e8re bande foresti\u00e8re \u00e0 partir du littoral mais, plus \u00e0 l&rsquo;int\u00e9rieur des terres, il atteint un port clairement arboricole avec jusqu&rsquo;\u00e0 30(40) m de haut et une circonf\u00e9rence du tronc allant jusqu&rsquo;\u00e0 2,5 m. Normalement sans tronc principal d\u00e9fini \u00e0 partir de la base du sol. La \u00ab\u00a0base\u00a0\u00bb du tronc appara\u00eet sur\u00e9lev\u00e9e sur un ensemble de racines a\u00e9riennes qui forment une sorte de d\u00f4me enchev\u00eatr\u00e9, de 1 ou plusieurs m\u00e8tres de haut, au sommet duquel ces racines convergent, donnant progressivement forme \u00e0 un seul tronc qui bient\u00f4t se ramifie ou reste droit. \u00c9corce gris\u00e2tre ou gris orang\u00e9, lisse, sur les branches avec des cicatrices ellipso\u00efdales laiss\u00e9es par la base des p\u00e9tioles des feuilles tomb\u00e9es. Jeunes rameaux rouge\u00e2tres. Feuilles oppos\u00e9es (7-13 \u00d7 2,5-5 cm), coriaces, glabres, elliptiques \u00e0 obovales-elliptiques, enti\u00e8res, \u00e0 apex aigu ou obtus non mucron\u00e9, base arrondie ou cun\u00e9iforme ; jaun\u00e2tre verd\u00e2tre lorsqu&rsquo;il est jeune, \u00e0 maturit\u00e9, vert fonc\u00e9 sur le dessus et un peu plus clair sur le dessous. Nervure m\u00e9diane tr\u00e8s pro\u00e9minente, parfois rouge\u00e2tre sur le dessous, nervures secondaires \u00e0 peine visibles. P\u00e9tiole 1-2 cm. Stipules allong\u00e9es, aigu\u00ebs. Inflorescence en cymes axillaires, de 5-7 cm de long, \u00e0 8-20 fleurs t\u00e9tram\u00e8res, avec un p\u00e9doncule principal de 1,5-4 cm et des p\u00e9dicelles de 3-4 mm. Bract\u00e9es, coriaces, obtuses, persistantes. Calice campanul\u00e9, \u00e9pais, blanch\u00e2tre-verd\u00e2tre, avec des s\u00e9pales de 8-11 mm de long et de 3-4,5 mm de large, ovales, \u00e0 apex aigu. P\u00e9tales d&rsquo;environ 6-10 mm de long, \u00e9troitement ovales \u00e0 oblongs-lanc\u00e9ol\u00e9s, avec de longs poils laineux blanch\u00e2tres sur les bords, charnus, blanch\u00e2tres-jaun\u00e2tres, s&rsquo;\u00e9tendant entre les s\u00e9pales, pas sur eux. Ovaire ovo\u00efde-conique. 8 \u00e9tamines. Le fruit est une baie dure, brune, ovo\u00efde avec 1-2 graines qui se d\u00e9veloppent \u00e0 l&rsquo;int\u00e9rieur (viviparit\u00e9) donnant naissance \u00e0 une propagule ou hypocotyle tr\u00e8s allong\u00e9e (30-65 cm) \u00e0 section circulaire, l\u00e9g\u00e8rement r\u00e9tr\u00e9cie aux extr\u00e9mit\u00e9s, d&rsquo;abord verte, puis brun gris\u00e2tre fonc\u00e9, \u00e0 lenticelles. Cette propagule se forme dans l&rsquo;arbre et lorsqu&rsquo;elle tombe elle peut s&rsquo;enraciner directement dans le sol ou (comme elle flotte dans l&rsquo;eau) \u00eatre emport\u00e9e par les courants marins sur des centaines de km et s&rsquo;enraciner sur n&rsquo;importe quelle plage tropicale.<\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-44986","species","type-species","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>Rhizophora racemosa G. Mey. - 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=\"Rhizophora racemosa G. 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