{"id":12341,"date":"2020-11-10T10:07:44","date_gmt":"2020-11-10T10:07:44","guid":{"rendered":"https:\/\/www.northafricatrees.org\/species\/genista-umbellata-lher-dum-subsp-umbellata-3\/"},"modified":"2026-07-22T10:17:48","modified_gmt":"2026-07-22T10:17:48","slug":"genista-umbellata-lher-dum-subsp-umbellata-3","status":"publish","type":"species","link":"https:\/\/www.northafricatrees.org\/fr\/esp\u00e8ce\/genista-umbellata-lher-dum-subsp-umbellata-3\/","title":{"rendered":"Genista umbellata (L’H\u00e9r.) Dum. subsp. umbellata"},"content":{"rendered":"

Arbuste ou sous-arbuste de g\u00e9n\u00e9ralement jusqu\u2019\u00e0 0,7(1) m de haut, pulviniforme, inerme, hermaphrodite, \u00e0 tiges tr\u00e8s ramifi\u00e9es, rameaux alternes, oppos\u00e9s ou verticill\u00e9s, et feuilles promptement caduques, ce qui lui conf\u00e8re un aspect \u00e9ph\u00e9dro\u00efde. Tiges et rameaux vieux \u00e0 \u00e9corce brun-rouge\u00e2tre, parcourue par 11-12 c\u00f4tes en forme de T et tr\u00e8s resserr\u00e9es, glabrescente. Ramilles jeunes stri\u00e9es-c\u00f4tel\u00e9es longitudinalement, vertes, s\u00e9ric\u00e9es. Feuilles alternes ou oppos\u00e9es, unifoli\u00e9es \u2013seules sont trifoli\u00e9es celles \u00e0 la base des jeunes plantes\u2013, stipul\u00e9es, \u00e0 organe stipulaire parcouru de 3 c\u00f4tes confluentes au sommet, et foliole de 3-16 \u00d7 1,2-3 mm, g\u00e9n\u00e9ralement lanc\u00e9ol\u00e9e ou oblongue-lanc\u00e9ol\u00e9e, p\u00e9tiolul\u00e9e, aigu\u00eb, verd\u00e2tre, plus ou moins s\u00e9ric\u00e9e sur les deux faces. Inflorescences capituliformes, terminales, \u00e0 5-13(20) fleurs subsessiles ou bri\u00e8vement p\u00e9dicell\u00e9es, \u00e0 p\u00e9dicelle de jusqu\u2019\u00e0 2,5 mm, s\u00e9ric\u00e9. Calice de 4,5-8 mm, s\u00e9ric\u00e9, profond\u00e9ment divis\u00e9 en 2 l\u00e8vres, la sup\u00e9rieure bipartite en autant de lobules ov\u00e9s, et l\u2019inf\u00e9rieure plus longue, \u00e0 3 dents triangulaires-lanc\u00e9ol\u00e9es, droite la centrale et divergentes les lat\u00e9rales. Corolle de 9-14 mm, papilionac\u00e9e, jaune, \u00e0 \u00e9tendard ov\u00e9, \u00e0 sommet tronqu\u00e9 ou arrondi, entier ou \u00e9margin\u00e9, recourb\u00e9, presque enti\u00e8rement s\u00e9ric\u00e9 sur le dos, plus long que les ailes, ces derni\u00e8res plus courtes que la car\u00e8ne. Androc\u00e9e monadelphe, \u00e0 10 \u00e9tamines. Ovaire s\u00e9ric\u00e9, et stigmate capit\u00e9. Gousse de 15-24 \u00d7 4-6 mm, lin\u00e9aire-oblongue, un peu comprim\u00e9e et toruleuse, brun\u00e2tre, s\u00e9ric\u00e9e, \u00e0 2-5 graines. Graines de 2-3 mm, ovo\u00efdes-polygonales, un peu comprim\u00e9es, lisses, brun-noir\u00e2tre, brillantes, sans arille.<\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-12341","species","type-species","status-publish","hentry"],"acf":[],"yoast_head":"\nGenista umbellata (L'H\u00e9r.) Dum. subsp. umbellata - North Africa Trees<\/title>\n<meta name=\"robots\" content=\"noindex, follow\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Genista umbellata (L'H\u00e9r.) 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