{"id":12197,"date":"2020-11-10T10:07:34","date_gmt":"2020-11-10T10:07:34","guid":{"rendered":"https:\/\/www.northafricatrees.org\/species\/rhizophora-mucronata-lam-3\/"},"modified":"2026-07-19T10:49:08","modified_gmt":"2026-07-19T10:49:08","slug":"rhizophora-mucronata-lam-3","status":"publish","type":"species","link":"https:\/\/www.northafricatrees.org\/fr\/esp\u00e8ce\/rhizophora-mucronata-lam-3\/","title":{"rendered":"Rhizophora mucronata Lam."},"content":{"rendered":"<p>Arbre ou arbuste \u00e0 feuilles persistantes de jusqu\u2019\u00e0 8(10) m de haut (jusqu\u2019\u00e0 18 m selon certaines r\u00e9f\u00e9rences), habituellement sans tronc principal d\u00e9fini depuis la base du sol. La \u00ab base \u00bb du tronc appara\u00eet \u00e9lev\u00e9e sur un ensemble de racines a\u00e9riennes qui forment une sorte de cupule de 1 m de haut ou davantage, au sommet de laquelle confluent ces racines, conformant progressivement un tronc unique qui se lignifie rapidement. \u00c9corce gris\u00e2tre ou gris\u00e2tre-orang\u00e9, lisse, pr\u00e9sentant sur les rameaux des cicatrices elliptiques laiss\u00e9es par la base du p\u00e9tiole des feuilles en tombant. Feuilles oppos\u00e9es (6-15 \u00d7 4-9 cm), coriaces, glabres, elliptiques \u00e0 obov\u00e9es-elliptiques, enti\u00e8res, \u00e0 sommet aigu ou obtus mais toujours mucron\u00e9, base arrondie ou cun\u00e9iforme ; verd\u00e2tre-jaun\u00e2tre les jeunes, elles prennent ensuite une couleur vert fonc\u00e9 sur l\u2019endroit et un peu plus clair sur l\u2019envers. Nervure centrale tr\u00e8s pro\u00e9minente, les secondaires \u00e0 peine visibles. P\u00e9tiole de 2-4 cm. Stipules de 6-8 \u00d7 1,5-2 cm, aigu\u00ebs. Inflorescences en cymes axillaires pendantes de 6-12 fleurs t\u00e9tram\u00e8res, \u00e0 p\u00e9doncule principal de 2-4 cm et p\u00e9dicelles d\u2019environ 5 mm. Bract\u00e9es de 1,5-2 mm, coriaces, persistantes. Calice campanul\u00e9, \u00e9pais, blanch\u00e2tre-verd\u00e2tre, \u00e0 tube de 4 mm et l\u00e8vres de 12 mm, ov\u00e9es, \u00e0 sommet aigu. P\u00e9tales de 8-10 mm de long, \u00e9troitement ov\u00e9s \u00e0 oblongs-lanc\u00e9ol\u00e9s, aigus, \u00e0 longs poils blanch\u00e2tres et laineux sur les bords, charnus, blanch\u00e2tre-jaun\u00e2tre, qui s\u2019\u00e9tendent entre les s\u00e9pales et non sur ces derniers. Ovaire de 4 mm environ, ovo\u00efde-conique. \u00c9tamines : 8. Le fruit est une baie ovo\u00efde de couleur brune, indur\u00e9e, \u00e0 1-2 graines qui se d\u00e9veloppent en son int\u00e9rieur (viviparit\u00e9), donnant naissance \u00e0 une propagule, ou hypocolyte, tr\u00e8s allong\u00e9e (jusqu\u2019\u00e0 40 \u00d7 1,2 cm) de section circulaire, tr\u00e8s l\u00e9g\u00e8rement r\u00e9tr\u00e9cie aux extr\u00e9mit\u00e9s, d\u2019abord verte, puis finalement brun-gris\u00e2tre fonc\u00e9, pourvue de lenticelles. Cette propagule se forme sur l\u2019arbre et peut, lorsqu\u2019elle tombe, s\u2019enraciner directement dans le sol ou \u00eatre entra\u00een\u00e9e par les courants marins (il s&rsquo;agit d&rsquo;une structure flottante), parfois \u00e0 des centaines de kilom\u00e8tres, et s\u2019implanter sur n\u2019importe quelle plage tropicale.<\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-12197","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 mucronata Lam. - 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 mucronata Lam. - North Africa Trees\" \/>\n<meta property=\"og:description\" content=\"Arbre ou arbuste \u00e0 feuilles persistantes de jusqu\u2019\u00e0 8(10) m de haut (jusqu\u2019\u00e0 18 m selon certaines r\u00e9f\u00e9rences), habituellement sans tronc principal d\u00e9fini depuis la base du sol. 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