{"id":12767,"date":"2020-11-10T10:08:17","date_gmt":"2020-11-10T10:08:17","guid":{"rendered":"https:\/\/www.northafricatrees.org\/species\/rosa-spinosissima-l-3\/"},"modified":"2021-10-23T09:17:25","modified_gmt":"2021-10-23T09:17:25","slug":"rosa-spinosissima-l-3","status":"publish","type":"species","link":"https:\/\/www.northafricatrees.org\/fr\/esp\u00e8ce\/rosa-spinosissima-l-3\/","title":{"rendered":"Rosa spinosissima L."},"content":{"rendered":"

Arbrisseau ou arbuste caducifoli\u00e9, \u00e0 tiges plus ou moins dress\u00e9es, de jusqu\u2019\u00e0 0,5(1) m de haut. Tiges glabres, rouge\u00e2tres, \u00e0 nombreux aiguillons et \u00e9pines (jusqu\u2019\u00e0 10 pour chaque cm de tige), de diff\u00e9rentes tailles et formes (g\u00e9n\u00e9ralement droites et de section circulaire, mais \u00e9galement en combinaison avec d’autres courb\u00e9es et un peu planes). Feuilles \u00e0 5-11 folioles (6-15 \u00d7 4-12 mm) elliptiques \u00e0 ovales-elliptiques ou orbiculaires, \u00e0 base plus ou moins arrondie ou l\u00e9g\u00e8rement cun\u00e9iforme, bord finement serr\u00e9, un peu coriaces, glabres et \u00e9glanduleuses sur l’endroit, glanduleuses ou non sur l’envers. P\u00e9tiole et rachis glabres, mais pourvus de glandes et de petits aiguillons et de fines \u00e9pines. Stipules de 5-10 mm de large, longuement soud\u00e9es au p\u00e9tiole. Fleurs solitaires, terminales sur de courtes ramilles lat\u00e9rales, sans bract\u00e9es (ou \u00e0 bract\u00e9es tr\u00e8s petites), \u00e0 p\u00e9dicelles (10-30 mm) pourvus de nombreuses glandes ou \u00e9glanduleux. S\u00e9pales (8-14 \u00d7 2-4 mm), entiers ou pr\u00e9sentant tr\u00e8s rarement un petit lobule lat\u00e9ral, \u00e0 nombreuses glandes sur le bord et le dos ou \u00e9glanduleux, dress\u00e9s ou retourn\u00e9s vers l\u2019arri\u00e8re, persistants. Corolle blanche, mais l\u00e9g\u00e8rement jaun\u00e2tre \u00e0 la base des p\u00e9tales, de 30-40 mm de diam\u00e8tre, \u00e0 5 p\u00e9tales de 15-20 mm de large, un peu \u00e9chancr\u00e9s au sommet. Au centre de la fleur, d\u00e9passant du disque du r\u00e9ceptacle, apparaissent les styles, libres (non soud\u00e9s), pubescents. \u00c9tamines tr\u00e8s nombreuses, jaunes. Fruit (cynorrhodon) form\u00e9 d\u2019un ensemble fourni d\u2019ak\u00e8nes enferm\u00e9s dans un r\u00e9ceptacle ou urc\u00e9ole, \u00e0 contour plus ou moins sph\u00e9rique, glanduleux ou pas, d\u2019abord vert, puis rouge, et enfin noir \u00e0 pleine maturit\u00e9, sur lequel appara\u00eet le calice persistant.<\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-12767","species","type-species","status-publish","hentry"],"acf":[],"yoast_head":"\nRosa spinosissima 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=\"Rosa spinosissima L. - North Africa Trees\" \/>\n<meta property=\"og:description\" content=\"Arbrisseau ou arbuste caducifoli\u00e9, \u00e0 tiges plus ou moins dress\u00e9es, de jusqu\u2019\u00e0 0,5(1) m de haut. 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