{"id":793,"date":"2026-02-07T00:01:14","date_gmt":"2026-02-06T22:01:14","guid":{"rendered":"http:\/\/www.exploralyon.fr\/?p=793"},"modified":"2026-04-04T09:38:16","modified_gmt":"2026-04-04T07:38:16","slug":"7-fevrier-1897-deces-dalexis-jordan","status":"publish","type":"post","link":"https:\/\/www.exploralyon.fr\/?p=793","title":{"rendered":"7 f\u00e9vrier 1897: D\u00e9c\u00e8s d’Alexis Jordan"},"content":{"rendered":"

Le botaniste Alexis Jordan d\u00e9c\u00e8de le 7 f\u00e9vrier 1897 \u00e0 Lyon. Il y \u00e9tait n\u00e9 le 29 octobre 1814. Il est connu pour avoir d\u00e9velopp\u00e9 une approche analytique de la botanique qui sera qualifi\u00e9e d’\u00e9cole jordanienne<\/em>.<\/p>\n

\"Alexis

Alexis Jordan<\/p><\/div>\n

<\/p>\n

Au XVIII\u00b0 si\u00e8cle, le naturaliste su\u00e9dois Carl von Linn\u00e9 met au point la nomenclature binomale<\/em>. Elle permet l’identification standardis\u00e9e au niveau mondial de toutes les esp\u00e8ces vivantes, en associant un nom g\u00e9n\u00e9rique (genre) et un nom sp\u00e9cifique (esp\u00e8ce). Par exemple, Linn\u00e9 est le premier \u00e0 utiliser l’expression \u00ab\u00a0Homo Sapiens\u00a0\u00bb en 1758.<\/p>\n

\"Carl

Carl von Linn\u00e9<\/p><\/div>\n

Sous son influence, de nombreuses soci\u00e9t\u00e9s linn\u00e9ennes<\/em>, soci\u00e9t\u00e9s savantes d’histoire naturelle, se constituent. Celle de Lyon est fond\u00e9e en 1822 et est toujours active [Site web<\/a>] !<\/p>\n

Alexis Jordan la rejoint en 1845, d’abord en tant qu’entomologiste. Il porte par la suite le plus vif int\u00e9r\u00eat aux sp\u00e9cimens v\u00e9g\u00e9taux ramen\u00e9s par son confr\u00e8re Marc-Antoine Timeroy. Il en conclut que certains devraient d\u00e9passer le statut de vari\u00e9t\u00e9 <\/em>pour \u00eatre \u00e9lev\u00e9s au rang d’esp\u00e8ce<\/em>. C’est la base de sa m\u00e9thode: s’int\u00e9resser aux diff\u00e9rences les plus infimes tout en v\u00e9rifiant que les sp\u00e9cimens ne s’hybrident pas entre eux, ce qui prouve leur statut d’esp\u00e8ce.<\/p>\n

Son herbier devient l’un des plus grands d’Europe, et il passe 50 ans \u00e0 identifier 1685 nouvelles esp\u00e8ces, dont 200 d’Erophila<\/em> !<\/p>\n

\"Erophila

Erophila Verna (1)<\/p><\/div>\n

Laurent Ajdnik<\/p>\n

Licences:<\/p>\n

(1) Voir ici<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Le botaniste Alexis Jordan d\u00e9c\u00e8de le 7 f\u00e9vrier 1897 \u00e0 Lyon. Il y \u00e9tait n\u00e9 le 29 octobre 1814. Il est connu pour avoir d\u00e9velopp\u00e9 une approche analytique de la botanique qui sera qualifi\u00e9e d’\u00e9cole jordanienne.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":true,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[47,4],"tags":[],"class_list":["post-793","post","type-post","status-publish","format-standard","hentry","category-inventions","category-personnages"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pPzUa-cN","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.exploralyon.fr\/index.php?rest_route=\/wp\/v2\/posts\/793","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.exploralyon.fr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.exploralyon.fr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.exploralyon.fr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.exploralyon.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=793"}],"version-history":[{"count":12,"href":"https:\/\/www.exploralyon.fr\/index.php?rest_route=\/wp\/v2\/posts\/793\/revisions"}],"predecessor-version":[{"id":1193,"href":"https:\/\/www.exploralyon.fr\/index.php?rest_route=\/wp\/v2\/posts\/793\/revisions\/1193"}],"wp:attachment":[{"href":"https:\/\/www.exploralyon.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=793"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.exploralyon.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=793"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.exploralyon.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=793"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}