{"id":7556,"date":"2013-03-27T13:18:15","date_gmt":"2013-03-27T17:18:15","guid":{"rendered":"https:\/\/extension.umaine.edu\/blueberries\/?page_id=7556"},"modified":"2024-02-06T11:47:53","modified_gmt":"2024-02-06T16:47:53","slug":"white-rattlesnakeroot","status":"publish","type":"page","link":"https:\/\/extension.umaine.edu\/blueberries\/weed-images\/herbaceous-broadleaf-weeds\/white-flowers\/white-rattlesnakeroot\/","title":{"rendered":"White rattlesnakeroot"},"content":{"rendered":"<p><em>Prepared by Jennifer L. D&#8217;Appollonio, Assistant Scientist, University of Maine, Orono, ME 04469. Updated February 2018.<\/em><\/p>\n<p><strong>Scientific name: <\/strong><em>Prenanthes alba<\/em> L.; also <em>Nabalus albus<\/em> (L.) Hook.<\/p>\n<p><strong>Common name(s): <\/strong>white rattlesnakeroot, white rattlesnake-root, white lettuce, lion&#8217;s-foot<\/p>\n<p><strong>Link(s): <\/strong><a href=\"https:\/\/plants.usda.gov\/home\/plantProfile?symbol=PRAL2\" target=\"_blank\" rel=\"noopener noreferrer\">USDA PLANTS Profile<\/a>, <a href=\"http:\/\/www.wildflower.org\/plants\/result.php?id_plant=PRAL2\" target=\"_blank\" rel=\"noopener noreferrer\">NPIN Profile<\/a>, <a href=\"https:\/\/gobotany.nativeplanttrust.org\/species\/nabalus\/albus\/\" target=\"_blank\" rel=\"noopener noreferrer\">Go Botany<\/a><\/p>\n<p><em><strong>Images:<\/strong> (to see enlargements [PC]: click on image, then right click and choose &#8220;view image&#8221;)<\/em><\/p>\n\n\t\t<style type=\"text\/css\">\n\t\t\t#gallery-1 {\n\t\t\t\tmargin: auto;\n\t\t\t}\n\t\t\t#gallery-1 .gallery-item {\n\t\t\t\tfloat: left;\n\t\t\t\tmargin-top: 10px;\n\t\t\t\ttext-align: center;\n\t\t\t\twidth: 25%;\n\t\t\t}\n\t\t\t#gallery-1 img {\n\t\t\t\tborder: 2px solid #cfcfcf;\n\t\t\t}\n\t\t\t#gallery-1 .gallery-caption {\n\t\t\t\tmargin-left: 0;\n\t\t\t}\n\t\t\t\/* see gallery_shortcode() in wp-includes\/media.php *\/\n\t\t<\/style>\n\t\t<div id='gallery-1' class='gallery galleryid-7556 gallery-columns-4 gallery-size-thumbnail'><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/prenanthes-1.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/prenanthes-1-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Prenanthes alba young plant\" aria-describedby=\"gallery-1-8325\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/prenanthes-1-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/prenanthes-1-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-8325'>\n\t\t\t\tyoung plant, early June\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/Prenanthes-alba-009.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/Prenanthes-alba-009-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Prenanthes alba mature plant\" aria-describedby=\"gallery-1-8322\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/Prenanthes-alba-009-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/Prenanthes-alba-009-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-8322'>\n\t\t\t\tmature plant\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2017\/11\/Prenanthes-alba-2.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2017\/11\/Prenanthes-alba-2-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Prenanthes alba stem\" aria-describedby=\"gallery-1-12545\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2017\/11\/Prenanthes-alba-2-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2017\/11\/Prenanthes-alba-2-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-12545'>\n\t\t\t\tstem usually reddish\/purplish\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/Prenanthes-alba-012.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/Prenanthes-alba-012-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Prenanthes alba leaf shape\" aria-describedby=\"gallery-1-8323\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/Prenanthes-alba-012-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/Prenanthes-alba-012-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-8323'>\n\t\t\t\tleaf shape is variable\n\t\t\t\t<\/dd><\/dl><br style=\"clear: both\" \/><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2017\/11\/Prenanthes-alba-4.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2017\/11\/Prenanthes-alba-4-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Prenanthes alba leaves\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2017\/11\/Prenanthes-alba-4-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2017\/11\/Prenanthes-alba-4-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2017\/11\/Prenanthes-alba-6.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2017\/11\/Prenanthes-alba-6-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Prenanthes alba leaves\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2017\/11\/Prenanthes-alba-6-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2017\/11\/Prenanthes-alba-6-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/Prenanthes-alba-016.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/Prenanthes-alba-016-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Prenanthes alba early August\" aria-describedby=\"gallery-1-8324\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/Prenanthes-alba-016-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/Prenanthes-alba-016-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-8324'>\n\t\t\t\tin flower, early August\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/Prenanthes-alba-007.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/Prenanthes-alba-007-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Prenanthes alba bracts\" aria-describedby=\"gallery-1-8321\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/Prenanthes-alba-007-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/Prenanthes-alba-007-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-8321'>\n\t\t\t\tprimary and secondary bracts (green to purplish)\n\t\t\t\t<\/dd><\/dl><br style=\"clear: both\" \/><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/Prenanthes-alba-005.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/Prenanthes-alba-005-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Prenanthes alba flowers\" aria-describedby=\"gallery-1-8320\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/Prenanthes-alba-005-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/Prenanthes-alba-005-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-8320'>\n\t\t\t\tray florets (white to purplish)\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/Prenanthes-alba-004.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/Prenanthes-alba-004-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Prenanthes alba flower stages\" aria-describedby=\"gallery-1-8319\" srcset=\"https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/Prenanthes-alba-004-150x150.jpg 150w, https:\/\/extension.umaine.edu\/blueberries\/wp-content\/uploads\/sites\/41\/2013\/05\/Prenanthes-alba-004-32x32.jpg 32w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-8319'>\n\t\t\t\tflower stages\n\t\t\t\t<\/dd><\/dl>\n\t\t\t<br style='clear: both' \/>\n\t\t<\/div>\n\n<p><strong>Description:<\/strong><\/p>\n<p>&#8211; biennial<\/p>\n<p>-leaves are:<\/p>\n<ul>\n<li>variable<\/li>\n<li>alternate<\/li>\n<li>simple towards the top<\/li>\n<li>hairy<\/li>\n<\/ul>\n<p>-flower head is 1\/2 &#8221; wide<\/p>\n<p>-blooms August- September<\/p>\n<p>&#8211; may be confused with <em>P. altissima<\/em> (tall rattlesnakeroot); <em>P. alba<\/em> has 8 primary bracts, <em>P. altissima<\/em> has 5. May also be confused with several other species; see NPIN Profile and <a href=\"https:\/\/gobotany.nativeplanttrust.org\/species\/nabalus\/albus\/\" target=\"_blank\" rel=\"noopener noreferrer\">Go Botany<\/a> for details<\/p>\n<p><strong>Habitat:<\/strong><\/p>\n<p>-forests<\/p>\n<p>-woods<\/p>\n<p>-rocky soils<\/p>\n<p>&nbsp;<\/p>\n<p>Sources:<\/p>\n<p>Department of Botany. \u201c Prenanthes Alba L.\u201d <i>Online Virtual Flora of Wisconsin <\/i>, Wisconsin State Herbarium, wisflora.herbarium.wisc.edu\/taxa\/index.php?taxon=4669.<\/p>\n<div><\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Prepared by Jennifer L. D&#8217;Appollonio, Assistant Scientist, University of Maine, Orono, ME 04469. Updated February 2018. Scientific name: Prenanthes alba L.; also Nabalus albus (L.) Hook. Common name(s): white rattlesnakeroot, white rattlesnake-root, white lettuce, lion&#8217;s-foot Link(s): USDA PLANTS Profile, NPIN Profile, Go Botany Images: (to see enlargements [PC]: click on image, then right click and [&hellip;]<\/p>\n","protected":false},"author":218,"featured_media":0,"parent":6098,"menu_order":33,"comment_status":"closed","ping_status":"closed","template":"templates\/page-withsidebar.php","meta":{"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-7556","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>White rattlesnakeroot - Cooperative Extension: Maine Wild Blueberries - University of Maine Cooperative Extension<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/extension.umaine.edu\/blueberries\/weed-images\/herbaceous-broadleaf-weeds\/white-flowers\/white-rattlesnakeroot\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"White rattlesnakeroot - Cooperative Extension: Maine Wild Blueberries - University of Maine Cooperative Extension\" \/>\n<meta property=\"og:description\" content=\"Prepared by Jennifer L. D&#8217;Appollonio, Assistant Scientist, University of Maine, Orono, ME 04469. Updated February 2018. Scientific name: Prenanthes alba L.; also Nabalus albus (L.) Hook. 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D&#8217;Appollonio, Assistant Scientist, University of Maine, Orono, ME 04469. Updated February 2018. Scientific name: Prenanthes alba L.; also Nabalus albus (L.) Hook. 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