{"id":13004,"date":"2020-11-10T10:08:35","date_gmt":"2020-11-10T10:08:35","guid":{"rendered":"https:\/\/www.northafricatrees.org\/species\/helianthemum-syriacum-3\/"},"modified":"2026-07-26T12:27:33","modified_gmt":"2026-07-26T12:27:33","slug":"helianthemum-syriacum-3","status":"publish","type":"species","link":"https:\/\/www.northafricatrees.org\/fr\/esp\u00e8ce\/helianthemum-syriacum-3\/","title":{"rendered":"Helianthemum syriacum (Jacq.) Dum. Cours."},"content":{"rendered":"<p>Arbrisseau \u00e0 feuilles persistantes, hermaphrodite, atteignant 0,8(1,2) m de haut, dress\u00e9, rarement trapu, tr\u00e8s rameux, \u00e0 tiges et rameaux les plus vieux nettement ligneux, \u00e9corce brun\u00e2tre, ramilles jeunes pubescentes, brun rouge\u00e2tre, verd\u00e2tre rouge\u00e2tre ou rouges, \u00e0 poils \u00e9toil\u00e9s. Feuilles (8-50 \u00d7 1-8 mm) oppos\u00e9es, lin\u00e9aires-lanc\u00e9ol\u00e9es, termin\u00e9es en une pointe tr\u00e8s aigu\u00eb (mucron), att\u00e9nu\u00e9es \u00e0 la base en un court p\u00e9tiole, \u00e0 bord g\u00e9n\u00e9ralement r\u00e9volut\u00e9, vert-gris\u00e2tre sur l\u2019endroit et verd\u00e2tre-blanch\u00e2tre et tomenteuses sur l\u2019envers. Stipules triangulaires \u00e0 ovales, g\u00e9n\u00e9ralement plus longues que le p\u00e9tiole. Inflorescences corymbiformes, compos\u00e9es de 3-5 ramifications \u00e0 8-30 fleurs chacune. Calice \u00e0 5 s\u00e9pales, les 2 externes lanc\u00e9ol\u00e9s, minuscules (1,5-4 mm), les 3 internes plus grands (5-9 mm), ovales ou ovales-lanc\u00e9ol\u00e9s, aigus, \u00e0 tomentum de poils \u00e9toil\u00e9s et 2 c\u00f4tes peu marqu\u00e9es. Cinq p\u00e9tales, obovales, jaunes, sans tache fonc\u00e9e \u00e0 la base, de longueur similaire \u00e0 celle des s\u00e9pales. Fruit en capsule ovale \u00e0 ellipso\u00efdale, \u00e0 3 ar\u00eates courtes, de 3-4 mm, d\u00e9hiscente en 3 valves. Graines : 3-6, de un peu plus de 1 mm et de couleur fonc\u00e9e 2n = 20 ; n = 10.<\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-13004","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>Helianthemum syriacum (Jacq.) Dum. Cours. - 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=\"Helianthemum syriacum (Jacq.) Dum. 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