{"id":6366,"date":"2024-05-09T19:23:14","date_gmt":"2024-05-09T17:23:14","guid":{"rendered":"https:\/\/lecompagnonrouge.fr\/?p=6366"},"modified":"2025-07-30T17:44:08","modified_gmt":"2025-07-30T15:44:08","slug":"poa-bulbosa-subsp-bulbosa-paturin-bulbeux","status":"publish","type":"post","link":"https:\/\/lecompagnonrouge.fr\/?p=6366","title":{"rendered":"Poa bulbosa subsp. bulbosa. P\u00e2turin bulbeux."},"content":{"rendered":"\n<p class=\"has-medium-font-size\">Poa bulbosa est un tout petit p\u00e2turin \u00e0 <strong>inflorescence<\/strong> tr\u00e8s <strong>compacte, \u00e0 rameaux courts, dress\u00e9s<\/strong> pr\u00e9sentant une <strong>dense touffe de feuilles basales<\/strong>. Cette derni\u00e8re <strong>le plus souvent dess\u00e9ch\u00e9e \u00e0 floraison.<\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"850\" height=\"567\" src=\"https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/IMG_1526.jpg\" alt=\"Poa bulbosa: \u00e9pi.\" class=\"wp-image-6479\" srcset=\"https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/IMG_1526.jpg 850w, https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/IMG_1526-300x200.jpg 300w, https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/IMG_1526-768x512.jpg 768w\" sizes=\"auto, (max-width: 850px) 100vw, 850px\" \/><\/figure>\n<\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"850\" height=\"567\" src=\"https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/IMG_0973.jpg\" alt=\"\" class=\"wp-image-6380\" srcset=\"https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/IMG_0973.jpg 850w, https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/IMG_0973-300x200.jpg 300w, https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/IMG_0973-768x512.jpg 768w\" sizes=\"auto, (max-width: 850px) 100vw, 850px\" \/><\/figure>\n<\/div>\n\n\n<p><\/p>\n\n\n\n<p class=\"has-medium-font-size\">La base des talles est tr\u00e8s \u00e9paisse et pr\u00e9sente 2 gaines charnues emboit\u00e9es.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"850\" height=\"761\" src=\"https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/innovIMG_0973.jpg\" alt=\"Poa bulbosa: gaine basale foliaire \u00e9paissie\" class=\"wp-image-6378\" srcset=\"https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/innovIMG_0973.jpg 850w, https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/innovIMG_0973-300x269.jpg 300w, https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/innovIMG_0973-768x688.jpg 768w\" sizes=\"auto, (max-width: 850px) 100vw, 850px\" \/><\/figure>\n<\/div>\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p class=\"has-medium-font-size\">De fait la plante est comme bulbeuse.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"850\" height=\"464\" src=\"https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/IMG_1176.jpg\" alt=\"Poa bulbosa. Gaines basales \u00e9paissies. \" class=\"wp-image-6379\" srcset=\"https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/IMG_1176.jpg 850w, https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/IMG_1176-300x164.jpg 300w, https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/IMG_1176-768x419.jpg 768w\" sizes=\"auto, (max-width: 850px) 100vw, 850px\" \/><\/figure>\n<\/div>\n\n\n<p><\/p>\n\n\n\n<p class=\"has-medium-font-size\">G\u00e9n\u00e9ralement, mais ce n&rsquo;est pas le cas au Parc des Beaumonts (93100), au moins quelques individus pr\u00e9sentent une inflorescence vivipare o\u00f9 les fleurs sont remplac\u00e9es par des bulbilles que l&rsquo;on remarque \u00e0 leurs feuillaisons. Selon les auteurs le p\u00e2turin bulbeux est distingu\u00e9en vari\u00e9t\u00e9s bulbosa (ici pr\u00e9sent) et vivipara (pour la pseudo-vivipare non aper\u00e7ue au parc des Beaumonts); Ici donc Poa bulbosa subsp. bulbosa var. bulbosa. Cette distinction en vari\u00e9t\u00e9s (ou parfois en sous-esp\u00e8ces) est rejet\u00e9e par Phillipe Jauzein dans la flore de la France m\u00e9diterran\u00e9enne continentale. Je n&rsquo;ai pas trouv\u00e9 d&rsquo;individus pseudovivipares.<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Ce que les porteurs de lunettes \u00e0 double foyer ne peuvent pas voir:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>la <strong>lemme<\/strong> est le plus souvent <strong>poilue<\/strong> <\/li>\n\n\n\n<li>La <strong>glume car\u00e9n\u00e9e est \u00e0 3 nervures \u00e0 la base. Les 2 lat\u00e9rales n&rsquo;allant pas jusqu&rsquo;au bout de la glume<\/strong>.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"786\" height=\"520\" src=\"https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/IMG_1525.jpg\" alt=\"Poa bulbosa: fleuron. Lemmes et glume.\" class=\"wp-image-6478\" srcset=\"https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/IMG_1525.jpg 786w, https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/IMG_1525-300x198.jpg 300w, https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/IMG_1525-768x508.jpg 768w\" sizes=\"auto, (max-width: 786px) 100vw, 786px\" \/><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading has-medium-font-size\"><strong>Risque de confusions.<\/strong><\/h3>\n\n\n\n<p class=\"has-medium-font-size\">Risque de confusions mais essentiellement avec des plantes des \u00e9tages sup\u00e9rieurs.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Poa perconcinna orophyte localis\u00e9e dans les Alpes du nord. Ne pr\u00e9sente pas les m\u00eames talles. Fleurs plus petites.<\/li>\n\n\n\n<li>Poa cenisia, orophyte, se distingue par des feuilles basales \u00e0 port distique<\/li>\n\n\n\n<li>Poa alpina, orophyte, inflorescence plus \u00e9tal\u00e9e;<\/li>\n\n\n\n<li>Poa badensis (Jura) et Poa molinieri (collin\u00e9en et alpin du jura des Alpes et des Pyr\u00e9n\u00e9es)sont +- pruineux (jeunes feuilles) et rameaux un peu moins dress\u00e9s.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-medium-font-size\">En plaine, <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Poa infirma, est un tout petit p\u00e2turin \u00e0 rameaux restant dress\u00e9s, mais bien plus longs que ceux de Poa bulbosa: l&rsquo;inflorescence est bien moins compacte.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"850\" height=\"567\" src=\"https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/IMG_0975.jpg\" alt=\"\" class=\"wp-image-6381\" srcset=\"https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/IMG_0975.jpg 850w, https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/IMG_0975-300x200.jpg 300w, https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/IMG_0975-768x512.jpg 768w\" sizes=\"auto, (max-width: 850px) 100vw, 850px\" \/><\/figure>\n<\/div>\n\n\n<p><\/p>\n\n\n\n<p class=\"has-medium-font-size\">En Europe de l&rsquo;est, en Europe centrale se trouve Poa bulbosa subsp. pseudoconcinna.<\/p>\n\n\n\n<p class=\"has-small-font-size\"><a href=\"https:\/\/lecompagnonrouge.fr\/?s=poales\">Poales<\/a>&gt;<a href=\"https:\/\/lecompagnonrouge.fr\/?s=poaceae\">Poaceae<\/a>&gt; Groupe des p\u00e2turins: panicule diffuse\/Epillets d\u00e9pourvus d\u2019arr\u00eates\/plusieurs fleurons fertiles\/Glume car\u00e9n\u00e9e&gt;&nbsp;<a href=\"https:\/\/lecompagnonrouge.fr\/?s=poa\">Poa<\/a>&nbsp;bulbosa subsp. bulbosa<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-medium-font-size\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\"><strong>Protection<\/strong>:<\/mark><\/h3>\n\n\n\n<p class=\"has-medium-font-size\">Poa bulbosa b\u00e9n\u00e9ficie d&rsquo;une protection dans les r\u00e9gions ou d\u00e9partements suivants:<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Haute Normandie &amp; Champagne-Ardenne: Plante prot\u00e9g\u00e9e: nombre d&rsquo;espace d&rsquo;occupation ou de localit\u00e9 restreint.e.s (ou pour les localit\u00e9s, vraisemblance d&rsquo;un changement d&rsquo;affectation des sols concern\u00e9s, d&rsquo;une menace.) [code D2]<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Lorraine: D\u00e9clin continue de la superficie ou de la qualit\u00e9 de l&rsquo;habitat. [code B2b (iii)]<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Sarthe: <mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">R\u00e9glementation<\/mark>: La plante est signal\u00e9e Znieff dans ce d\u00e9partement. En attente, la r\u00e9glementation est signal\u00e9e susceptible d&rsquo;\u00eatre potentiellement \u00e9tendue sur la zone de comp\u00e9tence du conservatoire national botanique du bassin parisien (je trouve \u00e7\u00e0 peu pratique. Je crois qu&rsquo;il faudrait plus d&#8217;employ\u00e9s au conservatoire\ud83d\ude0a). La <a href=\"https:\/\/lecompagnonrouge.fr\/?page_id=8669#znieff\">Znieff<\/a> signale flores ou habitats remarquable.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p class=\"has-small-font-size\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading has-medium-font-size\"><strong>Ecologie de la plante<\/strong><\/h3>\n\n\n\n<p class=\"has-medium-font-size\">Ce p\u00e2turin est des pelouses s\u00e8ches et ouvertes sur sables, sur dalles, sur lithosols ou encore bermes caillouteuses. Le trait bien oligotrophile de cette plante la rend int\u00e9ressante\/ amusante\/ intriguante au sein du Xanthorion parietinae du Parc des Beaumonts (93100). Il semble qu&rsquo;une trophie marqu\u00e9e ne le d\u00e9range pas trop, quoiqu&rsquo;il en soit. La x\u00e9rophilie lui est int\u00e9ressante.<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Pelouses des sables continentaux \u00e0 submaritimes, m\u00e9dio-europ\u00e9ennes \u00e0 m\u00e9diterran\u00e9ennes. Koelerio glaucae &#8211; Corynephoretea canescentis Klika in Klika &amp; Nov\u00e1k 1941<\/p>\n\n\n\n<p class=\"has-medium-font-size\">Dans l&rsquo;ensemble, les p\u00e2turins provoqueraient des pollinoses. Les poaceae forment un groupe qui semble particuli\u00e8rement complexe en raison de la taille de ce groupe pour les allergologues. Poa bulbosa: pollen allergisant?<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>Lieu o\u00f9 la plante a \u00e9t\u00e9 photographi\u00e9e: pelouse \u00e9corch\u00e9e au Parc des Beaumonts. Ce parc pr\u00e9sente une d\u00e9clivit\u00e9 importante. Le lieux o\u00f9 est photographi\u00e9 ce p\u00e2turin est dans la partie haute, \u00e0 proximit\u00e9 de la marre perch\u00e9e. Cette marre est artificielle. Ce parc est une ancienne carri\u00e8re de Gypse. En suivant les couches g\u00e9ologiques harmonis\u00e9es du site BRGM infoterre), ce parc pr\u00e9sente des marnes, des marnes du Gypse vers le bas du parc. La marre perch\u00e9e est situ\u00e9e dans la langue des marnes supragypseuses se trouvant un peu au dessus, et \u00e0 proximit\u00e9 d&rsquo;une langue d&rsquo;argile verte et glaise \u00e0 cyr\u00e8nes. <br><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"850\" height=\"567\" src=\"https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/IMG_1177.jpg\" alt=\"\" class=\"wp-image-6382\" srcset=\"https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/IMG_1177.jpg 850w, https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/IMG_1177-300x200.jpg 300w, https:\/\/lecompagnonrouge.fr\/wp-content\/uploads\/2024\/05\/IMG_1177-768x512.jpg 768w\" sizes=\"auto, (max-width: 850px) 100vw, 850px\" \/><\/figure>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Poa bulbosa est un tout petit p\u00e2turin \u00e0 inflorescence tr\u00e8s compacte, \u00e0 rameaux courts, dress\u00e9s pr\u00e9sentant une dense touffe de feuilles basales. Cette derni\u00e8re le plus souvent dess\u00e9ch\u00e9e \u00e0 floraison. La base des talles est tr\u00e8s \u00e9paisse et pr\u00e9sente 2 gaines charnues emboit\u00e9es. De fait la plante est comme bulbeuse. G\u00e9n\u00e9ralement, mais ce n&rsquo;est pas&#8230;<\/p>\n","protected":false},"author":1,"featured_media":6377,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[976,306],"tags":[975],"class_list":["post-6366","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-poa-bulbosa-subsp-bulbosa","category-poaceae","tag-paturin-bulbeux"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Poa bulbosa subsp. bulbosa. 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