{"id":2569,"date":"2022-10-09T10:44:32","date_gmt":"2022-10-09T08:44:32","guid":{"rendered":"https:\/\/lecompagnonrouge.fr\/?p=2569"},"modified":"2023-07-18T19:54:12","modified_gmt":"2023-07-18T17:54:12","slug":"potamogeton-nodosus-potamot-noueux","status":"publish","type":"post","link":"https:\/\/lecompagnonrouge.fr\/?p=2569","title":{"rendered":"Potamogeton nodosus. Potamot noueux"},"content":{"rendered":"\n<p class=\"has-medium-font-size\">Les potamots c&rsquo;est pour les pros.<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Donc bon l\u00e0 &#8230; On va pas pr\u00e9tendre.<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Les risques de confusions s&rsquo;\u00e9tablissent notamment avec Potamogeton x fluitans, et si regard trop rapide avec Potamogeton natans, et avec Potamogeton polygonofolius.<\/p>\n\n\n\n<p class=\"has-medium-font-size\">On cherche un grand Potamot tol\u00e9rant au courant avec des feuilles flottantes et des feuilles submerg\u00e9es toutes longuement p\u00e9tiol\u00e9es.<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Potamogeton x fluitans  (P. lucens x natans) r\u00e9side en Bretagne, r\u00e9gion que la Seine ignore. Pour diff\u00e9rencier morphologiquement ces deux Potamots, on peut porter attention \u00e0 de nombreux d\u00e9tails mais on peut d\u00e9j\u00e0 noter que le Potamot flottant \u00e0 des p\u00e9tioles plut\u00f4t plus court que le Potamot noueux et qu&rsquo;ils peuvent \u00eatre \u00e9claircis et l\u00e9g\u00e8rement enfl\u00e9s \u00e0 la jonction avec le limbe; que l&rsquo;apex du limbe des feuilles flottantes est plus souvent (mucron\u00e9\/)apicul\u00e9, et que l&rsquo;apex du limbe des feuilles submerg\u00e9es est \u00ab\u00a0nettement apicul\u00e9\u00a0\u00bb, muni d&rsquo;une longue arr\u00eate. <\/p>\n\n\n\n<p class=\"has-medium-font-size\">Le Potamot noueux a des feuilles de couleur uniforme.<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Potamogeton natans n&rsquo;a pas de feuilles submerg\u00e9es rapidement visibles: elles sont r\u00e9duites \u00e0 leurs p\u00e9tioles.<\/p>\n\n\n\n<ul class=\"has-medium-font-size wp-block-list\">\n<li>Les feuilles du Potamot noueux sont assez larges, mais plus allong\u00e9es que celles du Potamot nageant et que celles du Potamot \u00e0 feuilles de Renou\u00e9e.<\/li>\n\n\n\n<li>Elles sont arrondies ou en coins \u00e0 la base<\/li>\n\n\n\n<li>Les feuilles flottantes sont planes \u00e0 la base. La jonction avec le p\u00e9tiole ne se traduit pas par un pli en forme de goutti\u00e8re permettant la verticalit\u00e9 de ce dernier, comme c&rsquo;est le cas chez Potamogeton natans, lequel voit aussi la base de ses feuilles flottantes potentiellement \u00e9claircie.<\/li>\n\n\n\n<li>Les feuilles flottantes ne sont plut\u00f4t pas termin\u00e9es en petites pointes (non apicul\u00e9es).<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"850\" height=\"592\" src=\"https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2022\/10\/feuilles.jpg\" alt=\"\" class=\"wp-image-2571\" srcset=\"https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2022\/10\/feuilles.jpg 850w, https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2022\/10\/feuilles-300x209.jpg 300w, https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2022\/10\/feuilles-768x535.jpg 768w\" sizes=\"auto, (max-width: 850px) 100vw, 850px\" \/><\/figure>\n\n\n\n<p>Les sp\u00e9cialistes vont s&rsquo;int\u00e9resser notamment aux feuilles submerg\u00e9es et aux feuilles flottantes: nervures, bords des limbes, gaines stipulaires &#8230;<\/p>\n\n\n\n<p class=\"has-small-font-size\"><a href=\"https:\/\/lecompagnonrouge.fr\/?s=Alismatales\">Alismatales<\/a>&gt;<a href=\"https:\/\/lecompagnonrouge.fr\/?s=Potamogetonaceae\">Potamogetonaceae<\/a>&gt;<a href=\"https:\/\/lecompagnonrouge.fr\/?s=Potamogeton\">Potamogeton<\/a> nodosus<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Herbiers aquatiques, vivaces, enracin\u00e9s, des eaux douces, courantes, peu profondes. Ranunculion fluitantis Neuh\u00e4usl 1959<\/p>\n\n\n\n<p>Lieu(x) o\u00f9 la plante est photographi\u00e9e: Paris<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Les potamots c&rsquo;est pour les pros. Donc bon l\u00e0 &#8230; On va pas pr\u00e9tendre. Les risques de confusions s&rsquo;\u00e9tablissent notamment avec Potamogeton x fluitans, et si regard trop rapide avec Potamogeton natans, et avec Potamogeton polygonofolius. On cherche un grand Potamot tol\u00e9rant au courant avec des feuilles flottantes et des feuilles submerg\u00e9es toutes longuement p\u00e9tiol\u00e9es&#8230;.<\/p>\n","protected":false},"author":1,"featured_media":2570,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[592,590],"tags":[589],"class_list":["post-2569","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-potamogeton-nodosus-potamogetonaceae","category-potamogetonaceae","tag-potamot-noueux"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Potamogeton nodosus. 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