{"id":1826,"date":"2022-01-30T17:42:21","date_gmt":"2022-01-30T16:42:21","guid":{"rendered":"https:\/\/michelecrevecoeur.ch\/?page_id=1826"},"modified":"2022-02-05T13:28:39","modified_gmt":"2022-02-05T12:28:39","slug":"saint-johns-wort","status":"publish","type":"page","link":"https:\/\/michelecrevecoeur.ch\/?page_id=1826","title":{"rendered":"Saint John&rsquo;s wort leaf"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"1826\" class=\"elementor elementor-1826\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-46b4b1e2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"46b4b1e2\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-66e514ce\" data-id=\"66e514ce\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-869fb81 elementor-widget elementor-widget-text-editor\" data-id=\"869fb81\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"margin-top: 15px; margin-bottom: 15px; line-height: 25.2px; color: #404040; font-family: arial; font-size: 14px; font-style: normal; font-weight: 400; text-align: center;\"><span style=\"color: #000080; font-size: medium;\"><strong>Cross section in a leaf of\u00a0<strong><em>Hypericum perforatum<\/em>.<\/strong><\/strong><\/span><\/p><p style=\"margin-top: 15px; margin-bottom: 15px; line-height: 25.2px; color: #404040; font-family: arial; font-size: 14px; font-style: normal; font-weight: 400;\"><strong>Saint-John&rsquo;s-wort<\/strong>, genus Hypericum of nearly 500 species in the family Hypericaceae is native to temperate and tropical areas.\u00a0 The species name\u00a0<em>perforatum\u00a0<\/em>refers to the presence of numerous tiny holes on the leaves. The holes correspond to numerous translucent glands that give impression that leaves are pierced. St John\u2019s wort is generally an herbaceous herb 30 \u2013 75 cm in height. However, it can grow to 10 meters and forms shrubs or even trees.\u00a0<em>H. perforatum<\/em>\u00a0has high medicinal value for 3000 years and is widely uses today as an antidepressant.<br \/>The leaves are small, elliptical and the edge of the leaf is entire without teeth. The surfaces are glabrous.<\/p><div style=\"color: #404040; font-family: arial; font-size: 14px; text-align: center;\"><p style=\"margin-top: 15px; margin-bottom: 15px; line-height: 25.2px;\" align=\"center\">Part of the section at the level of the main vein (blue arrow). ep1 and ep 2: epidermis of ad axial and ab axial faces.<br \/>pp: palisade parenchyma; pl: spongy parenchyma.<\/p><\/div><p style=\"margin-top: 15px; margin-bottom: 15px; line-height: 25.2px; color: #404040; font-family: arial; font-size: 14px; font-style: normal; font-weight: 400; text-align: center;\"><img fetchpriority=\"high\" decoding=\"async\" style=\"border-width: 0px; border-style: initial;\" src=\"https:\/\/www.unige.ch\/sciences\/biologie\/bioveg\/crevecoeur\/files\/1514\/6686\/7717\/Feuille_milllepertuis_1.jpg\" alt=\"Feuille milllepertuis NP\" width=\"550\" height=\"612\" \/><\/p><p style=\"margin-top: 15px; margin-bottom: 15px; line-height: 25.2px; color: #404040; font-family: arial; font-size: 14px; font-style: normal; font-weight: 400;\">Part of the section without the main vein: the mesophyll is heterogeneous with palisade parenchyma (<span style=\"color: #ff0000;\">pp<\/span>) toward adaxial face and spongy parenchyma (<span style=\"color: #ff0000;\">pl<\/span>) toward abaxial face. There is a large gland in the mesophyll and stomata on the abaxial epidermis. St: stomata.<\/p><p style=\"margin-top: 15px; margin-bottom: 15px; line-height: 25.2px; color: #404040; font-family: arial; font-size: 14px; font-style: normal; font-weight: 400;\"><img decoding=\"async\" style=\"border-width: 0px; border-style: initial; display: block; margin-left: auto; margin-right: auto;\" src=\"https:\/\/www.unige.ch\/sciences\/biologie\/bioveg\/crevecoeur\/files\/cache\/915af91ce9243f6fec4a75793b1471c1_f236.jpg\" alt=\"Feuille milllepertuis PS\" width=\"650\" height=\"535\" \/><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Cross section in a leaf of&nbsp;Hypericum perforatum. Saint-John&rsquo;s-wort, genus Hypericum of nearly 500 species in the family Hypericaceae is native to temperate and tropical areas.&nbsp; The species name&nbsp;perforatum&nbsp;refers to the presence of numerous tiny holes on the leaves. The holes correspond to numerous translucent glands that give impression that leaves are pierced. St John\u2019s wort [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-1826","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Saint John&#039;s wort leaf - Mich\u00e8le Cr\u00e8vecoeur<\/title>\n<meta name=\"description\" content=\"Saint-John&#039;s-wort, genus Hypericum of nearly 500 species in the family Hypericaceae is native to temperate and tropical areas.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/michelecrevecoeur.ch\/?page_id=1826\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Saint John&#039;s wort leaf - Mich\u00e8le Cr\u00e8vecoeur\" \/>\n<meta property=\"og:description\" content=\"Saint-John&#039;s-wort, genus Hypericum of nearly 500 species in the family Hypericaceae is native to temperate and tropical areas.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/michelecrevecoeur.ch\/?page_id=1826\" \/>\n<meta property=\"og:site_name\" content=\"Mich\u00e8le Cr\u00e8vecoeur\" \/>\n<meta property=\"article:modified_time\" content=\"2022-02-05T12:28:39+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.unige.ch\/sciences\/biologie\/bioveg\/crevecoeur\/files\/1514\/6686\/7717\/Feuille_milllepertuis_1.jpg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/michelecrevecoeur.ch\\\/?page_id=1826\",\"url\":\"https:\\\/\\\/michelecrevecoeur.ch\\\/?page_id=1826\",\"name\":\"Saint John's wort leaf - Mich\u00e8le Cr\u00e8vecoeur\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/michelecrevecoeur.ch\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/michelecrevecoeur.ch\\\/?page_id=1826#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/michelecrevecoeur.ch\\\/?page_id=1826#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.unige.ch\\\/sciences\\\/biologie\\\/bioveg\\\/crevecoeur\\\/files\\\/1514\\\/6686\\\/7717\\\/Feuille_milllepertuis_1.jpg\",\"datePublished\":\"2022-01-30T16:42:21+00:00\",\"dateModified\":\"2022-02-05T12:28:39+00:00\",\"description\":\"Saint-John's-wort, genus Hypericum of nearly 500 species in the family Hypericaceae is native to temperate and tropical areas.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/michelecrevecoeur.ch\\\/?page_id=1826#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/michelecrevecoeur.ch\\\/?page_id=1826\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/michelecrevecoeur.ch\\\/?page_id=1826#primaryimage\",\"url\":\"https:\\\/\\\/www.unige.ch\\\/sciences\\\/biologie\\\/bioveg\\\/crevecoeur\\\/files\\\/1514\\\/6686\\\/7717\\\/Feuille_milllepertuis_1.jpg\",\"contentUrl\":\"https:\\\/\\\/www.unige.ch\\\/sciences\\\/biologie\\\/bioveg\\\/crevecoeur\\\/files\\\/1514\\\/6686\\\/7717\\\/Feuille_milllepertuis_1.jpg\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/michelecrevecoeur.ch\\\/?page_id=1826#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\\\/\\\/michelecrevecoeur.ch\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Saint John&rsquo;s wort leaf\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/michelecrevecoeur.ch\\\/#website\",\"url\":\"https:\\\/\\\/michelecrevecoeur.ch\\\/\",\"name\":\"Mich\u00e8le Cr\u00e8vecoeur\",\"description\":\"Plant Microscopy\",\"publisher\":{\"@id\":\"https:\\\/\\\/michelecrevecoeur.ch\\\/#\\\/schema\\\/person\\\/dfdf9ef4c6d746dfdecdceb6e2986d66\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/michelecrevecoeur.ch\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\\\/\\\/michelecrevecoeur.ch\\\/#\\\/schema\\\/person\\\/dfdf9ef4c6d746dfdecdceb6e2986d66\",\"name\":\"Mich\u00e8le\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/5ad72d9990ca501b7348a22de838f81a21f31163f3372e910adcb88b005c4cca?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/5ad72d9990ca501b7348a22de838f81a21f31163f3372e910adcb88b005c4cca?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/5ad72d9990ca501b7348a22de838f81a21f31163f3372e910adcb88b005c4cca?s=96&d=mm&r=g\",\"caption\":\"Mich\u00e8le\"},\"logo\":{\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/5ad72d9990ca501b7348a22de838f81a21f31163f3372e910adcb88b005c4cca?s=96&d=mm&r=g\"},\"sameAs\":[\"http:\\\/\\\/michelecrevecoeur.ch\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Saint John's wort leaf - Mich\u00e8le Cr\u00e8vecoeur","description":"Saint-John's-wort, genus Hypericum of nearly 500 species in the family Hypericaceae is native to temperate and tropical areas.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/michelecrevecoeur.ch\/?page_id=1826","og_locale":"fr_FR","og_type":"article","og_title":"Saint John's wort leaf - Mich\u00e8le Cr\u00e8vecoeur","og_description":"Saint-John's-wort, genus Hypericum of nearly 500 species in the family Hypericaceae is native to temperate and tropical areas.","og_url":"https:\/\/michelecrevecoeur.ch\/?page_id=1826","og_site_name":"Mich\u00e8le Cr\u00e8vecoeur","article_modified_time":"2022-02-05T12:28:39+00:00","og_image":[{"url":"https:\/\/www.unige.ch\/sciences\/biologie\/bioveg\/crevecoeur\/files\/1514\/6686\/7717\/Feuille_milllepertuis_1.jpg","type":"","width":"","height":""}],"twitter_card":"summary_large_image","twitter_misc":{"Dur\u00e9e de lecture estim\u00e9e":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/michelecrevecoeur.ch\/?page_id=1826","url":"https:\/\/michelecrevecoeur.ch\/?page_id=1826","name":"Saint John's wort leaf - Mich\u00e8le Cr\u00e8vecoeur","isPartOf":{"@id":"https:\/\/michelecrevecoeur.ch\/#website"},"primaryImageOfPage":{"@id":"https:\/\/michelecrevecoeur.ch\/?page_id=1826#primaryimage"},"image":{"@id":"https:\/\/michelecrevecoeur.ch\/?page_id=1826#primaryimage"},"thumbnailUrl":"https:\/\/www.unige.ch\/sciences\/biologie\/bioveg\/crevecoeur\/files\/1514\/6686\/7717\/Feuille_milllepertuis_1.jpg","datePublished":"2022-01-30T16:42:21+00:00","dateModified":"2022-02-05T12:28:39+00:00","description":"Saint-John's-wort, genus Hypericum of nearly 500 species in the family Hypericaceae is native to temperate and tropical areas.","breadcrumb":{"@id":"https:\/\/michelecrevecoeur.ch\/?page_id=1826#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/michelecrevecoeur.ch\/?page_id=1826"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/michelecrevecoeur.ch\/?page_id=1826#primaryimage","url":"https:\/\/www.unige.ch\/sciences\/biologie\/bioveg\/crevecoeur\/files\/1514\/6686\/7717\/Feuille_milllepertuis_1.jpg","contentUrl":"https:\/\/www.unige.ch\/sciences\/biologie\/bioveg\/crevecoeur\/files\/1514\/6686\/7717\/Feuille_milllepertuis_1.jpg"},{"@type":"BreadcrumbList","@id":"https:\/\/michelecrevecoeur.ch\/?page_id=1826#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Accueil","item":"https:\/\/michelecrevecoeur.ch\/"},{"@type":"ListItem","position":2,"name":"Saint John&rsquo;s wort leaf"}]},{"@type":"WebSite","@id":"https:\/\/michelecrevecoeur.ch\/#website","url":"https:\/\/michelecrevecoeur.ch\/","name":"Mich\u00e8le Cr\u00e8vecoeur","description":"Plant Microscopy","publisher":{"@id":"https:\/\/michelecrevecoeur.ch\/#\/schema\/person\/dfdf9ef4c6d746dfdecdceb6e2986d66"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/michelecrevecoeur.ch\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":["Person","Organization"],"@id":"https:\/\/michelecrevecoeur.ch\/#\/schema\/person\/dfdf9ef4c6d746dfdecdceb6e2986d66","name":"Mich\u00e8le","image":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/secure.gravatar.com\/avatar\/5ad72d9990ca501b7348a22de838f81a21f31163f3372e910adcb88b005c4cca?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/5ad72d9990ca501b7348a22de838f81a21f31163f3372e910adcb88b005c4cca?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/5ad72d9990ca501b7348a22de838f81a21f31163f3372e910adcb88b005c4cca?s=96&d=mm&r=g","caption":"Mich\u00e8le"},"logo":{"@id":"https:\/\/secure.gravatar.com\/avatar\/5ad72d9990ca501b7348a22de838f81a21f31163f3372e910adcb88b005c4cca?s=96&d=mm&r=g"},"sameAs":["http:\/\/michelecrevecoeur.ch"]}]}},"_links":{"self":[{"href":"https:\/\/michelecrevecoeur.ch\/index.php?rest_route=\/wp\/v2\/pages\/1826","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/michelecrevecoeur.ch\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/michelecrevecoeur.ch\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/michelecrevecoeur.ch\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/michelecrevecoeur.ch\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1826"}],"version-history":[{"count":9,"href":"https:\/\/michelecrevecoeur.ch\/index.php?rest_route=\/wp\/v2\/pages\/1826\/revisions"}],"predecessor-version":[{"id":2057,"href":"https:\/\/michelecrevecoeur.ch\/index.php?rest_route=\/wp\/v2\/pages\/1826\/revisions\/2057"}],"wp:attachment":[{"href":"https:\/\/michelecrevecoeur.ch\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1826"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}