{"id":11712,"date":"2020-11-10T09:01:57","date_gmt":"2020-11-10T09:01:57","guid":{"rendered":"https:\/\/www.northafricatrees.org\/genus\/salsola-l\/"},"modified":"2026-05-27T17:53:30","modified_gmt":"2026-05-27T17:53:30","slug":"salsola-l","status":"publish","type":"genus","link":"https:\/\/www.northafricatrees.org\/fr\/genres\/salsola-l\/","title":{"rendered":"Salsola L."},"content":{"rendered":"<p>Genre complexe dont les esp\u00e8ces, malgr\u00e9 l&rsquo;inexistence de trait\u00e9s g\u00e9n\u00e9raux, ont \u00e9t\u00e9 \u00e9tudi\u00e9es en profondeur des points de vue morphologique, physiologique, anatomique, biochimique et mol\u00e9culaire, permettant d\u2019estimer qu\u2019il devrait \u00eatre consid\u00e9r\u00e9 davantage comme un groupe de genres que comme un genre monophyl\u00e9tique naturel (Hern\u00e1ndez-Ledesma <em>et al<\/em>., 2015: 342). De ce fait, certaines bases de donn\u00e9es consid\u00e8rent aujourd\u2019hui comme valides des genres tels que <em>Caroxylon<\/em> Thunb., en particulier suite aux publications de Akhani <em>et al<\/em>. (2007), ou <em>Nitrosalsola<\/em> Tzvelev, suite \u00e0 celle de Feodorova (2015), bas\u00e9es sur des aspects morphologiques et phylog\u00e9niques. Diverses flores et \u00e9tudes maintiennent le genre <em>Salsola<\/em>, en incluant des sections ou sous-sections telles que <em>Salsola<\/em>, <em>Darniella, Caroxylon, Vermiculatae, Tetragona,<\/em> etc. D\u2019autre part, la variabilit\u00e9 morphologique des esp\u00e8ces, d\u00e9j\u00e0 importante en elle-m\u00eame, y compris au sein d\u2019une m\u00eame esp\u00e8ce, se voit alt\u00e9r\u00e9e par les conditions environnementales extr\u00eames dans lesquelles elles se d\u00e9veloppent (salinit\u00e9 du substrat, aridit\u00e9 parfois extr\u00eame) qui, semble-t-il, modifient leur aspect (longueur des feuilles, abondance de l&rsquo;indument, inflorescences, etc.), et divers auteurs \u00e9mettent donc des r\u00e9serves quant \u00e0 la validit\u00e9 de bon nombre des taxons d\u00e9crits.<\/p>\n<p>Ainsi, la correcte identification des diff\u00e9rentes esp\u00e8ces n\u2019est pas sans comporter de graves probl\u00e8mes en raison de la grande similitude morphologique existant entre la plupart d\u2019entre elles, rendant dans de nombreux cas leur statut incertain (Freitag, 1997 ; Klopper &amp; Van Wyk, 2001 ; Mosyakin, 2003 ; Schutze <em>et al<\/em>., 2003). Cette situation a amen\u00e9 \u00e0 la coexistence de deux courants \u00e0 l\u2019heure de concevoir les esp\u00e8ces : le premier, \u00e0 l\u2019approche synth\u00e9tique, qui d\u00e9fend le concept de m\u00e9ga-esp\u00e8ces (Freitag, 1997), et le second, analytique, dont le repr\u00e9sentant le plus important est le botaniste russe V. P. Botschantzev, qui a propos\u00e9 le concept de micro-esp\u00e8ces (Akhani <em>et al<\/em>., 2007).<\/p>\n<p>Dans le N. de l\u2019Afrique, pr\u00e8s d\u2019une cinquantaine d&rsquo;esp\u00e8ces ont \u00e9t\u00e9 diff\u00e9renci\u00e9es, la plupart correspondant \u00e0 des arbrisseaux d\u00e9passant \u00e0 peine 1 m de haut, plus rarement \u00e0 des arbustes de jusqu&rsquo;\u00e0 2,5 m. Elles sont r\u00e9parties dans presque toute la r\u00e9gion.<\/p>\n<p>En plus des esp\u00e8ces autochtones trait\u00e9es, il convient de citer 2 autres esp\u00e8ces:<\/p>\n<p><em>S. genistoides<\/em> Juss. ex Poir. (<em>Caroxylon tamariscifolium <\/em>Moq.), \u00e0 curieux aspect g\u00e9n\u00e9ral r\u00e9tamo\u00efde ou g\u00e9nist\u00e9 spartiforme, tiges fr\u00e9quemment stri\u00e9es \u00e0 feuilles lin\u00e9aires et g\u00e9n\u00e9ralement longues, de jusqu\u2019\u00e0 25 mm, mais pouvant \u00eatre tr\u00e8s courtes chez certains exemplaires (3-25 \u00d7 0,5-1 mm), rapidement caduques. Inflorescences en panicules ou \u00e9pis terminaux caract\u00e9ristiques. Elle cro\u00eet sur terrains marneux, subsalins, en milieux arides et semi-arides du S.-E. de l\u2019Espagne. Elle a \u00e9t\u00e9 cit\u00e9e au Maroc, bien que des doutes subsistent quant \u00e0 sa pr\u00e9sence dans la r\u00e9gion.<\/p>\n<p><em>S. paletzkiana<\/em> Litv., arbuste de jusqu\u2019\u00e0 4 m de haut, \u00e0 feuilles filiformes, \u00e9troites et tr\u00e8s longues (4-10 cm), alternes, \u00e0 fleurs solitaires \u00e0 l\u2019aisselle des feuilles et p\u00e9rianthe fructif\u00e8re de jusqu\u2019\u00e0 25 mm de diam\u00e8tre. Originaire du Turkestan, elle a \u00e9t\u00e9 introduite et est aujourd\u2019hui naturalis\u00e9e, tout au moins dans divers oasis alg\u00e9riens.<\/p>\n","protected":false},"template":"","class_list":["post-11712","genus","type-genus","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Salsola L. - 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=\"Salsola L. - North Africa Trees\" \/>\n<meta property=\"og:description\" content=\"Genre complexe dont les esp\u00e8ces, malgr\u00e9 l&rsquo;inexistence de trait\u00e9s g\u00e9n\u00e9raux, ont \u00e9t\u00e9 \u00e9tudi\u00e9es en profondeur des points de vue morphologique, physiologique, anatomique, biochimique et mol\u00e9culaire, permettant d\u2019estimer qu\u2019il devrait \u00eatre consid\u00e9r\u00e9 davantage comme un groupe de genres que comme un genre monophyl\u00e9tique naturel (Hern\u00e1ndez-Ledesma et al., 2015: 342). 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