{"id":11439,"date":"2020-11-10T09:01:39","date_gmt":"2020-11-10T09:01:39","guid":{"rendered":"https:\/\/www.northafricatrees.org\/genus\/rosa-l\/"},"modified":"2026-05-28T12:11:21","modified_gmt":"2026-05-28T12:11:21","slug":"rosa-l","status":"publish","type":"genus","link":"https:\/\/www.northafricatrees.org\/fr\/genres\/rosa-l\/","title":{"rendered":"Rosa L."},"content":{"rendered":"<p>Genre comprenant environ 360 esp\u00e8ces, principalement asiatiques, mais \u00e9galement bien repr\u00e9sent\u00e9es dans d\u2019autres zones temp\u00e9r\u00e9es et froides holarctiques. Dans le N de l\u2019Afrique, il est repr\u00e9sent\u00e9 par 12 esp\u00e8ces, dont une pr\u00e9sente une validit\u00e9 taxonomique discutable (<em>R. mesatlantica<\/em>), 3 (<strong>R. montana<\/strong>, <strong>R. stylosa<\/strong> et <strong>R. abietina<\/strong>) sont des taxons \u00e0 aire de r\u00e9partition alpine, et dont il conviendrait donc de v\u00e9rifier la pr\u00e9sence dans le N. de l&rsquo;Afrique, et 7 micro-esp\u00e8ces appartenant au groupe complexe de <strong>R. canina<\/strong> au sens taxonomique large. Il s\u2019agit vraisemblablement du genre le plus difficile \u00e0 traiter, m\u00eame pour les sp\u00e9cialistes. Le nombre d&rsquo;esp\u00e8ces concern\u00e9es est d&rsquo;une part relativement \u00e9lev\u00e9, avec des diff\u00e9rences peu notables, et les hybridations et introgressions fr\u00e9quentes posent probl\u00e8me. Rien que dans le N. de l\u2019Afrique, plus d\u2019une centaine de taxons infrasp\u00e9cifiques ont \u00e9t\u00e9 d\u00e9crits, dont beaucoup s\u2019av\u00e8rent difficiles \u00e0 diff\u00e9rencier et \u00e0 valider \u00e0 l\u2019heure actuelle.<\/p>\n<p>Deux esp\u00e8ces cit\u00e9es dans le N. de l&rsquo;Afrique, dont il conviendrait de r\u00e9viser l&rsquo;existence et la r\u00e9partition, sont ;<\/p>\n<p><strong>R. mesatlantica<\/strong> H.Lindb. a \u00e9t\u00e9 d\u00e9crite comme un arbrisseau \u00e0 feuilles \u00e0 5 folioles, plus ou moins orbiculaires, \u00e0 bord doublement serr\u00e9, pubescentes sur les deux faces, \u00e9glanduleuses (sauf sur la nervure centrale de l&rsquo;envers), fleurs solitaires ou g\u00e9min\u00e9es, s\u00e9pales externes lobul\u00e9s, glanduleux sur les bords, et urc\u00e9ole lisse\u00a0; elle est cit\u00e9e dans les c\u00e9draies du N. du Moyen Atlas (Ras-el-Ma).<\/p>\n<p><strong>R. montana<\/strong> Chaix est un arbuste atteignant 3 m de haut, \u00e0 feuilles \u00e0 5-7 folioles plus ou moins orbiculaires, \u00e0 bord doublement serr\u00e9, glabres sur les deux faces, feuilles habituellement solitaires, s\u00e9pales plus ou moins lobul\u00e9s, termin\u00e9s en un appendice foliac\u00e9, glanduleux sur le dos, persistants et dress\u00e9s sur l\u2019urc\u00e9ole \u00e0 maturit\u00e9 ; elle est cit\u00e9e en Alg\u00e9rie dans l\u2019Atlas tellien central [Djebel Megriss (pr\u00e8s de Constantine), Djebel Zaccar (Miliana), massif du Djurdjura] et l\u2019Atlas saharien (Djebel Bou Kherouf, pr\u00e8s d\u2019Aflou).<\/p>\n<p>Il convient de ne pas confondre ces rosiers autochtones cit\u00e9s avec ceux qui apparaissent dans le territoire de mani\u00e8re subspontan\u00e9e, g\u00e9n\u00e9ralement issus de cultures ornementales et\/ou aromatiques, tels que <em>R. gallica<\/em> L. ou <em>R. moschata <\/em>Herrm. Il existe au Maroc, concr\u00e8tement dans la r\u00e9gion de Kelaat-M\u2019Gouna (versant S. du Haut Atlas), une longue tradition de culture de <em>R. damascena<\/em> remontant au Moyen \u00c2ge, avec une production annuelle d\u2019environ 4000\u00a0t de p\u00e9tales, essentiellement destin\u00e9s au secteur des cosm\u00e9tiques et \u00e0 l&rsquo;\u00e9laboration d&rsquo;eau de rose.<\/p>\n<p>La cl\u00e9 donn\u00e9e ci-dessous concerne les esp\u00e8ces traditionnellement consid\u00e9r\u00e9es comme autochtones dans le N. de l\u2019Afrique, y compris certaines tr\u00e8s rares et\/ou incertaines d\u00e9crites ici en vue de contribuer \u00e0 leur \u00e9tude et d\u00e9termination.<em><br \/>\n<\/em><\/p>\n","protected":false},"template":"","class_list":["post-11439","genus","type-genus","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>Rosa 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 L. - North Africa Trees\" \/>\n<meta property=\"og:description\" content=\"Genre comprenant environ 360 esp\u00e8ces, principalement asiatiques, mais \u00e9galement bien repr\u00e9sent\u00e9es dans d\u2019autres zones temp\u00e9r\u00e9es et froides holarctiques. Dans le N de l\u2019Afrique, il est repr\u00e9sent\u00e9 par 12 esp\u00e8ces, dont une pr\u00e9sente une validit\u00e9 taxonomique discutable (R. mesatlantica), 3 (R. montana, R. stylosa et R. abietina) sont des taxons \u00e0 aire de r\u00e9partition alpine, et...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.northafricatrees.org\/generos\/rosa-l-2\/\" \/>\n<meta property=\"og:site_name\" content=\"North Africa Trees\" \/>\n<meta property=\"article:modified_time\" content=\"2026-05-28T12:11:21+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.northafricatrees.org\\\/generos\\\/rosa-l-2\\\/\",\"url\":\"https:\\\/\\\/www.northafricatrees.org\\\/generos\\\/rosa-l-2\\\/\",\"name\":\"Rosa L. - North Africa Trees\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.northafricatrees.org\\\/en\\\/#website\"},\"datePublished\":\"2020-11-10T09:01:39+00:00\",\"dateModified\":\"2026-05-28T12:11:21+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.northafricatrees.org\\\/generos\\\/rosa-l-2\\\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.northafricatrees.org\\\/generos\\\/rosa-l-2\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.northafricatrees.org\\\/generos\\\/rosa-l-2\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Portada\",\"item\":\"https:\\\/\\\/www.northafricatrees.org\\\/fr\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Rosa L.\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.northafricatrees.org\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/www.northafricatrees.org\\\/en\\\/\",\"name\":\"North Africa Trees\",\"description\":\"\u00c1rboles y arbustos aut\u00f3ctonos del Norte de \u00c1frica\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.northafricatrees.org\\\/en\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.northafricatrees.org\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.northafricatrees.org\\\/en\\\/#organization\",\"name\":\"North \u00e1frica trees\",\"url\":\"https:\\\/\\\/www.northafricatrees.org\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/www.northafricatrees.org\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.northafricatrees.org\\\/wp-content\\\/uploads\\\/2020\\\/10\\\/logo-north-africa-trees.png\",\"contentUrl\":\"https:\\\/\\\/www.northafricatrees.org\\\/wp-content\\\/uploads\\\/2020\\\/10\\\/logo-north-africa-trees.png\",\"width\":80,\"height\":70,\"caption\":\"North \u00e1frica trees\"},\"image\":{\"@id\":\"https:\\\/\\\/www.northafricatrees.org\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Rosa L. - North Africa Trees","robots":{"index":"noindex","follow":"follow"},"og_locale":"fr_FR","og_type":"article","og_title":"Rosa L. - North Africa Trees","og_description":"Genre comprenant environ 360 esp\u00e8ces, principalement asiatiques, mais \u00e9galement bien repr\u00e9sent\u00e9es dans d\u2019autres zones temp\u00e9r\u00e9es et froides holarctiques. Dans le N de l\u2019Afrique, il est repr\u00e9sent\u00e9 par 12 esp\u00e8ces, dont une pr\u00e9sente une validit\u00e9 taxonomique discutable (R. mesatlantica), 3 (R. montana, R. stylosa et R. abietina) sont des taxons \u00e0 aire de r\u00e9partition alpine, et...","og_url":"https:\/\/www.northafricatrees.org\/generos\/rosa-l-2\/","og_site_name":"North Africa Trees","article_modified_time":"2026-05-28T12:11:21+00:00","twitter_card":"summary_large_image","twitter_misc":{"Dur\u00e9e de lecture estim\u00e9e":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.northafricatrees.org\/generos\/rosa-l-2\/","url":"https:\/\/www.northafricatrees.org\/generos\/rosa-l-2\/","name":"Rosa L. - North Africa Trees","isPartOf":{"@id":"https:\/\/www.northafricatrees.org\/en\/#website"},"datePublished":"2020-11-10T09:01:39+00:00","dateModified":"2026-05-28T12:11:21+00:00","breadcrumb":{"@id":"https:\/\/www.northafricatrees.org\/generos\/rosa-l-2\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.northafricatrees.org\/generos\/rosa-l-2\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.northafricatrees.org\/generos\/rosa-l-2\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Portada","item":"https:\/\/www.northafricatrees.org\/fr\/"},{"@type":"ListItem","position":2,"name":"Rosa L."}]},{"@type":"WebSite","@id":"https:\/\/www.northafricatrees.org\/en\/#website","url":"https:\/\/www.northafricatrees.org\/en\/","name":"North Africa Trees","description":"\u00c1rboles y arbustos aut\u00f3ctonos del Norte de \u00c1frica","publisher":{"@id":"https:\/\/www.northafricatrees.org\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.northafricatrees.org\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Organization","@id":"https:\/\/www.northafricatrees.org\/en\/#organization","name":"North \u00e1frica trees","url":"https:\/\/www.northafricatrees.org\/en\/","logo":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.northafricatrees.org\/en\/#\/schema\/logo\/image\/","url":"https:\/\/www.northafricatrees.org\/wp-content\/uploads\/2020\/10\/logo-north-africa-trees.png","contentUrl":"https:\/\/www.northafricatrees.org\/wp-content\/uploads\/2020\/10\/logo-north-africa-trees.png","width":80,"height":70,"caption":"North \u00e1frica trees"},"image":{"@id":"https:\/\/www.northafricatrees.org\/en\/#\/schema\/logo\/image\/"}}]}},"_links":{"self":[{"href":"https:\/\/www.northafricatrees.org\/fr\/wp-json\/wp\/v2\/genus\/11439","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.northafricatrees.org\/fr\/wp-json\/wp\/v2\/genus"}],"about":[{"href":"https:\/\/www.northafricatrees.org\/fr\/wp-json\/wp\/v2\/types\/genus"}],"wp:attachment":[{"href":"https:\/\/www.northafricatrees.org\/fr\/wp-json\/wp\/v2\/media?parent=11439"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}