{"id":2790,"date":"2022-10-23T16:31:20","date_gmt":"2022-10-23T14:31:20","guid":{"rendered":"https:\/\/lecompagnonrouge.fr\/?p=2790"},"modified":"2025-05-03T16:42:59","modified_gmt":"2025-05-03T14:42:59","slug":"knautia-arvernensis-knautie-dauvergne","status":"publish","type":"post","link":"https:\/\/lecompagnonrouge.fr\/?p=2790","title":{"rendered":"Knautia arvernensis. Knautie d’Auvergne"},"content":{"rendered":"\n

La Knautie d’auvergne est tr\u00e8s proche de la Knautie \u00e0 feuilles de card\u00e8res (Knautia dipsacifolia<\/a>). La Knautie d’Auvergne est submontagnarde*. Knautia dipsacifolia<\/a> (=Knautia maxima) a un rhizome \u00e0 d\u00e9veloppement sympodial (le d\u00e9veloppement d’un axe est interrompu, et repart d’un bourgeon lat\u00e9ral). La tige florif\u00e8re est terminale au dessus de la rosette (idem pour Knautia basaltica var. foreziensis, \u00e9galement proche morphologiquement); incidence sur l’\u00e9volution des positions au sol des parties a\u00e9riennes, l’inflorescence centrale est aussi la plus \u00e2g\u00e9e.<\/p>\n\n\n\n

*La Knautie d’Auvergne observ\u00e9e ici l’est autour de 650 m\u00e8tres d’altitude. \u00e0 quelques centaines de m\u00e8tres, au bout de la route apparaissent les premiers H\u00eatres<\/a>.<\/p>\n\n\n\n

<\/p>\n\n\n\n

Knautia arvernensis se distingue des autres Knautia car son rizhome est monopodial. Cette croissance continue favorise pour les parties a\u00e9riennes un aspect un peu touffu. La rosette et la tige sont issus par ailleurs de de deux bourgeons diff\u00e9rents: Les tiges a\u00e9riennes sont lat\u00e9rales \u00e0 la rosette. Et celle-ci est imposante. Elle subsiste.<\/strong><\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Ses feuilles sont toujours indivises<\/strong> (en cas de pr\u00e9sence de deux types de feuilles, il semble que la plante doive \u00eatre rapport\u00e9 \u00e0 Knautia x chassagnei)<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Noter que les Knauties pr\u00e9sentent une inflorescence en capitule involucr\u00e9, que les bract\u00e9es de cet involucre sont herbac\u00e9es et jamais spinescentes, qu’elles ne poss\u00e8dent pas d’\u00e9cailles (i.e: pas de bract\u00e9oles, pas de petites bract\u00e9es foliac\u00e9es \u00e0 l’aisselle de chacune des fleurs du capitule).<\/p>\n\n\n\n

Les capitules sont \u00e9galement plut\u00f4t rayonnants (les fleurs externes de Knautia integrifolia \u00e9tant pratiquement actinomorphes, l’effet rayonnant en est r\u00e9duit).<\/p>\n\n\n\n

Les Knauties s’introgressent entre elles. Elles sont g\u00e9n\u00e9ralement plus ou moins hybrides.<\/p>\n\n\n\n

Dipsacales<\/a>>Caprifoliaceae<\/a>>Knautia<\/a> arvernensis<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
\n
\"\"<\/figure>\n<\/figure>\n\n\n\n

Ourlets basophiles \u00e0 neutroclines, m\u00e9sohydriques, montagnards. Knaution maximae Julve 1993<\/p>\n\n\n\n

Lieu(x) o\u00f9 la plante est photographi\u00e9e: sud de la Creuse<\/p>\n","protected":false},"excerpt":{"rendered":"

La Knautie d’auvergne est tr\u00e8s proche de la Knautie \u00e0 feuilles de card\u00e8res (Knautia dipsacifolia). La Knautie d’Auvergne est submontagnarde*. Knautia dipsacifolia (=Knautia maxima) a un rhizome \u00e0 d\u00e9veloppement sympodial (le d\u00e9veloppement d’un axe est interrompu, et repart d’un bourgeon lat\u00e9ral). La tige florif\u00e8re est terminale au dessus de la rosette (idem pour Knautia basaltica…<\/p>\n","protected":false},"author":1,"featured_media":2791,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[242,617],"tags":[616],"class_list":["post-2790","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-caprifoliaceae","category-knautia-arvernensis","tag-knautie-dauvergne"],"yoast_head":"\nKnautia arvernensis. 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