{"id":44879,"date":"2022-12-30T21:11:42","date_gmt":"2022-12-30T21:11:42","guid":{"rendered":"https:\/\/www.northafricatrees.org\/especies\/avicennia-germinans-l-l\/"},"modified":"2022-12-31T10:38:12","modified_gmt":"2022-12-31T10:38:12","slug":"avicennia-germinans-l-l","status":"publish","type":"species","link":"https:\/\/www.northafricatrees.org\/fr\/esp\u00e8ce\/avicennia-germinans-l-l\/","title":{"rendered":"Avicennia germinans (L.) L."},"content":{"rendered":"

Arbuste ou petit arbre \u00e0 feuilles persistantes, hermaphrodite, de 3-10(15) m de haut, au tronc tr\u00e8s ramifi\u00e9, \u00e0 \u00e9corce noire ou brun fonc\u00e9 \u00e0 brun rouge\u00e2tre fonc\u00e9 ou grise, lisse, l\u00e9g\u00e8rement fissur\u00e9e longitudinalement et assez \u00e9cailleuse. Cime arrondie. Abondantes racines a\u00e9riennes respiratoires verticales (pneumatophores), petites, \u00e9lanc\u00e9es, atteignant 20(30) cm de haut, r\u00e9parties dans un rayon allant jusqu’\u00e0 10(15) m autour de l’arbre. A l’extr\u00eame nord de l’Afrique, en Mauritanie, les sp\u00e9cimens ne sont pas tr\u00e8s gros et ne pr\u00e9sentent pratiquement pas de pneumatophores. Feuilles oppos\u00e9es, coriaces, \u00e0 p\u00e9tiole de 2-15(27) mm, sans stipules. Feuilles (3)4,5-12(15) x 1,5-4,4 cm, lanc\u00e9ol\u00e9es ou lanc\u00e9ol\u00e9es-oblongues \u00e0 oblongues, elliptiques ou obovales, \u00e0 apex aigu ou obtus, se r\u00e9tr\u00e9cissant progressivement vers la base, en forme de coin, enti\u00e8res, glabres et vert intense sur la face sup\u00e9rieure, avec des poils courts appliqu\u00e9s et plus clairs sur la face inf\u00e9rieure. Inflorescences en cymes axillaires ou terminales, avec 1 \u00e0 15 paires de fleurs par \u00e9pi, et un p\u00e9doncule de section quadrangulaire. Fleurs sessiles, de 1 \u00e0 2 cm de diam\u00e8tre, actinomorphes ; calice \u00e0 cinq s\u00e9pales, de 3-5 x 2-3 mm, orbiculaire ou largement ovale, concave, hirsute et cili\u00e9 ; corolle gamop\u00e9tale, avec un tube un peu plus long que les s\u00e9pales et 4 lobes ovales blanch\u00e2tres (initialement jaun\u00e2tres puis blancs) avec l’int\u00e9rieur de la corolle jaun\u00e2tre ou orange ; androc\u00e9e \u00e0 quatre \u00e9tamines ins\u00e9r\u00e9es dans la gorge, alternant avec les lobes de la corolle, \u00e0 filet court. Le fruit (1,2-4 x 0,7-1,5 cm) est une capsule bivalve ovale \u00e0 elliptique, l\u00e9g\u00e8rement aplatie, asym\u00e9trique, apicul\u00e9e, glabre ou l\u00e9g\u00e8rement s\u00e9ric\u00e9e-tomenteuse. \u00c0 l’int\u00e9rieur, il contient une seule graine qui germe avant que le fruit tombe.<\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-44879","species","type-species","status-publish","hentry"],"acf":[],"yoast_head":"\nAvicennia germinans (L.) 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=\"Avicennia germinans (L.) 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