{"id":5519,"date":"2024-02-04T12:28:47","date_gmt":"2024-02-04T11:28:47","guid":{"rendered":"https:\/\/lecompagnonrouge.fr\/?p=5519"},"modified":"2025-03-09T10:54:34","modified_gmt":"2025-03-09T09:54:34","slug":"phytolacca-americana-raisin-damerique","status":"publish","type":"post","link":"https:\/\/lecompagnonrouge.fr\/?p=5519","title":{"rendered":"Phytolacca americana. Raisin d’Am\u00e9rique"},"content":{"rendered":"\n

Plante dress\u00e9e \u00e0 grande feuilles ovales (les nervures semblant enfonc\u00e9es dans le limbe),<\/p>\n\n\n\n

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

pr\u00e9sentant 8-10 carpelles par fruits, et 8 \u00e0 10 \u00e9tamines par fleurs.<\/strong><\/p>\n\n\n\n

Fleurs blanches \u00e0 ros\u00e9es.<\/p>\n\n\n

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

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

Diff\u00e9rence avec Phytolacca acinos [= Phytolacca esculenta] s’\u00e9chappant de culture en Suisse qui pr\u00e9sente 8 \u00e9tamines\/ 8 carpelles (cet indice souvent utilis\u00e9 n’est pas tr\u00e8s fiable).<\/p>\n\n\n\n

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

La fructification m\u00fbre mauve-noire de Phytolacca americana est retombante<\/strong>, celle de Phytolacca acinos reste dress\u00e9e.<\/p>\n\n\n\n

Phytolacca acinos (= P. esculenta) est cit\u00e9e dans Le potager d’un curieux<\/em>, ce qui explique pourquoi chercher \u00e0 la distinguer alors qu’elle n’est pas cens\u00e9ment pr\u00e9sente dans l’hexagone. Elle peut donner lieu \u00e0 des semis un peu \u00ab\u00a0sauvage\u00a0\u00bb.<\/p>\n\n\n\n

Pas de confusion possible pour les m\u00e9diterran\u00e9ens avec l’Ombu (Phytolacca dioica), qui s’\u00e9chapperait de culture (?):<\/p>\n\n\n\n

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

Caryophyllales<\/a>>Phytolaccaceae<\/a>>Phytolacca<\/a> americana<\/p>\n\n\n\n

Plante toxique. La plante a \u00e9t\u00e9 (et est) consomm\u00e9e sous forme d’ \u00ab\u00a0asperge\u00a0\u00bb dans sa r\u00e9gion d’origine. Am\u00e9rique du Nord. Le jus des fruits (toxique) a \u00e9t\u00e9 utilis\u00e9 pour rehausser la couleur du mauvais vin.<\/p>\n\n\n\n

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

EEE diss\u00e9min\u00e9 par les oiseaux. <\/p>\n\n\n\n

Plante tr\u00e8s toxique. <\/p>\n\n\n\n

Appauvrissement de la divers!t\u00e9 en zone humides, pelouses sablonneuses et lisi\u00e8res.<\/p>\n\n\n\n

Lutte: Arrachage manuel. Fauche avant floraison sur des espaces plus colonis\u00e9s. Si les espaces sont tr\u00e8s importants et tr\u00e8s colonis\u00e9s … labour, raclage …<\/p>\n\n\n\n

M\u00e9gaphorbiaies pionni\u00e8res de clairi\u00e8res basophiles, m\u00e9dio-europ\u00e9ennes, m\u00e9soeutrophiles, m\u00e9sohydriques. Atropion bellae-donnae Braun-Blanquet 1930 ex Aichinger 1933<\/p>\n\n\n\n

Lieux o\u00f9 ont \u00e9t\u00e9 prises les photos: Montreuil sous Bois (93100), et l’arbre au trottoir (Ombu) est celui qui est \u00e0 l’entr\u00e9e du parc botanique de Nice.<\/p>\n","protected":false},"excerpt":{"rendered":"

Plante dress\u00e9e \u00e0 grande feuilles ovales (les nervures semblant enfonc\u00e9es dans le limbe), pr\u00e9sentant 8-10 carpelles par fruits, et 8 \u00e0 10 \u00e9tamines par fleurs. Fleurs blanches \u00e0 ros\u00e9es. Diff\u00e9rence avec Phytolacca acinos [= Phytolacca esculenta] s’\u00e9chappant de culture en Suisse qui pr\u00e9sente 8 \u00e9tamines\/ 8 carpelles (cet indice souvent utilis\u00e9 n’est pas tr\u00e8s fiable)….<\/p>\n","protected":false},"author":1,"featured_media":5523,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[888,887],"tags":[886],"class_list":["post-5519","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-phytolacca-americana","category-phytolaccaceae","tag-raisin-damerique"],"yoast_head":"\nPhytolacca americana. 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