{"id":1371,"date":"2022-05-16T16:52:56","date_gmt":"2022-05-16T14:52:56","guid":{"rendered":"https:\/\/lecompagnonrouge.fr\/?p=1371"},"modified":"2025-04-06T15:33:33","modified_gmt":"2025-04-06T13:33:33","slug":"bromus-hordeaceus-brome-mou","status":"publish","type":"post","link":"https:\/\/lecompagnonrouge.fr\/?p=1371","title":{"rendered":"Bromus hordeaceus subsp. hordaceus. Brome mou."},"content":{"rendered":"\n

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

La sous-esp\u00e8ce \u00e9ponyme, Bromus hordeaceus subsp. hordeaceus, est caract\u00e9ris\u00e9e par une pilosit\u00e9 qui des gaines basales gagne \u00e9galement les \u00e9pis.<\/p>\n\n\n\n

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

Ce brome a des \u00e9pillets* ovo\u00efdes restant assez compact, car port\u00e9s par de courts p\u00e9doncules*; non d\u00e9ploy\u00e9s ici. Elle poss\u00e8de au moins un rameau assez d\u00e9velopp\u00e9..<\/p>\n\n\n

\n
\"\u00e9pillets\"<\/figure>\n<\/div>\n\n\n

Noter que l’indice chez les Bromus tient beaucoup au rapport de taille entre la pal\u00e9ole* et le caryopse*. Ici, le caryopse est \u00e0 peine plus petit que la pal\u00e9ole (+ l’ar\u00eate est ins\u00e9r\u00e9e tr\u00e8s proche du sommet du fleuron).<\/p>\n\n\n\n

Poales<\/a>>Poaceae<\/a>>Groupe des Bromes au sens large<\/a>: panicule \u00e9tal\u00e9e, parfois contract\u00e9e avec au moins un rameau un peu long> \u00e9pillets souvent denses et en tous cas grands et termin\u00e9es par une arr\u00eate>Bromus<\/a> hordeaceus subsp. hordaceus<\/p>\n\n\n\n

Dans l\u2019ensemble, les bromes provoqueraient des pollinoses. Les poaceae forment un groupe qui semble particuli\u00e8rement complexe en raison de la taille de ce groupe pour les allergologues. Bromus hordaceus: pollen allergisant?<\/p>\n\n\n\n

Friches annuelles rud\u00e9rales, europ\u00e9ennes. Sisymbrietea officinalis Korneck 1974<\/p>\n\n\n\n

Observ\u00e9 le 3\/06\/2023<\/p>\n\n\n\n

Lieu (x) o\u00f9 la plante a \u00e9t\u00e9 photographi\u00e9e: Montreuil, Parc des Beaumonts.<\/p>\n\n\n\t\t\n <\/div>\n \n\n\n

Vocabulo:<\/strong><\/h4>\n\n\n\n

\u00e9pillets: partie \u00e9l\u00e9mentaire d\u2019une grappe ou d\u2019un \u00e9pi, form\u00e9s de parties st\u00e9riles comme lemmes et glumes, ainsi que de la fleur (pas toujours la partie la plus visible en g\u00e9n\u00e9ral sur les poac\u00e9es)<\/p>\n\n\n\n

Lemme: enveloppe externe de l\u2019\u00e9pillet.<\/p>\n\n\n\n

Glume: les glumes sont sous-jacentes aux lemmes. Ce sont des bract\u00e9es.<\/p>\n\n\n\n

Pal\u00e9ole: enveloppe interne de l’\u00e9pillet. La lemme et la pal\u00e9ole sont de petites glumes, des glumelles. La pal\u00e9ole est au dessus, vers l’int\u00e9rieur.<\/p>\n\n\n\n

Arr\u00eate: longue pointe terminale. Ici pointe terminale terminant la lemme, \u00ab\u00a0barbe\u00a0\u00bb.<\/p>\n\n\n\n

P\u00e9doncule: tige de la fleur<\/p>\n\n\n\n

Caryopse: fruit, grain de la poac\u00e9e<\/p>\n\n\n\n

Fleuron: il s’agit de la fleur, proprement dite (\u00e9tamine et pistil, et comprenant lemme et pal\u00e9ole)<\/p>\n\n\n\n

Sisymbrietea officinalis Korneck 1974: ces noms \u00e9tranges d\u00e9signent chacune des formations naturelles. Ces formations naturelles se reconnaissent parce qu\u2019elles regroupent de mani\u00e8re distincte, et de mani\u00e8re diff\u00e9rentes les une des autres plusieurs esp\u00e8ces de plantes.<\/p>\n\n\n\n

Rud\u00e9ral: Tr\u00e8s forte perturbation d’un site. En g\u00e9n\u00e9ral, du \u00e0 l’homme. Des causes naturelles peuvent aussi en \u00eatre la cause (grandes inondation et course de l’eau, etc.)<\/p>\n\n\n\n

\"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

La sous-esp\u00e8ce \u00e9ponyme, Bromus hordeaceus subsp. hordeaceus, est caract\u00e9ris\u00e9e par une pilosit\u00e9 qui des gaines basales gagne \u00e9galement les \u00e9pis. Ce brome a des \u00e9pillets* ovo\u00efdes restant assez compact, car port\u00e9s par de courts p\u00e9doncules*; non d\u00e9ploy\u00e9s ici. Elle poss\u00e8de au moins un rameau assez d\u00e9velopp\u00e9.. Noter que l’indice chez les Bromus tient beaucoup au…<\/p>\n","protected":false},"author":1,"featured_media":4944,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[344,345,306],"tags":[343,342],"class_list":["post-1371","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bromus","category-bromus-hordaceus","category-poaceae","tag-brome-faux-orge","tag-brome-mou"],"yoast_head":"\nBromus hordeaceus subsp. hordaceus. 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