{"id":27031,"date":"2013-08-15T16:19:48","date_gmt":"2013-08-15T12:19:48","guid":{"rendered":"https:\/\/archive2.ankakh.com\/?p=27031"},"modified":"2013-07-29T16:22:00","modified_gmt":"2013-07-29T12:22:00","slug":"goldenrod","status":"publish","type":"post","link":"https:\/\/archive2.ankakh.com\/en\/?p=27031","title":{"rendered":"Goldenrod"},"content":{"rendered":"

\"\u0417\u043e\u043b\u043e\u0442\u0430\u0440\u043d\u0438\u043a\"<\/a>Solidago<\/i>, commonly called\u00a0goldenrods<\/b>, is a genus of about 100 species of\u00a0flowering plants<\/a>\u00a0in the family\u00a0Asteraceae<\/a>.\u00a0Most are herbaceous\u00a0perennial<\/a>\u00a0species found in the meadows and pastures, along roads, ditches and waste areas in\u00a0North America<\/a>. There are also a few species native to Mexico, South America, and Eurasia.\u00a0Some American species have also been introduced into\u00a0Europe<\/a>\u00a0and other parts of the world.<\/p>\n

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Description<\/h2>\n

Solidago<\/i>\u00a0species are perennials growing from woody caudices or rhizomes. They have stems that can be decumbent to ascending or erect, ranging in height from 5 to 100 or more centimeters. Some species have stems that branch near the top. Some\u00a0Solidago<\/i>\u00a0species are hairless others have strigose, strigillose, hispid, or short-villous hairs. The basal leaves in some species remain persistent through flowering, while in others the basal leaves are shed before flowering. The leaf margins are often serrate, and leaf faces may be hairless or densely hairy; the distal leaves are sometimes 3-nerved, and hairless or sparsely to densely hairy with scabrous, strigillose, or villous hairs. In some species the upper leaves are stipitate-glandular or sometimes resinous. The flowering heads usually radiate, sometimes discoid, with (1\u2013)2 to 1500+ florets in racemiform (club-shaped or pyramidal), paniculiform or corymbo-paniculiform, or sometimes secund arrays. The involucres are campanulate to cylindric or attenuate. The ray florets are pistillate and fertile. The corollas are yellow or rarely white and are usually hairless. The disc florets are bisexual and fertile and number 2 to 35 typically, but in some species there may be up to 60 florets. The corollas of the disc florets are yellow and the tubes are shorter than the throats. The fruits are cypselae, which are narrowly obconic to cylindric in shape, they are sometimes somewhat compressed. The cypselae have 8 to 10 ribs usually and are hairless or moderately covered with stiff slender bristles. The pappi are very big with barbellate bristles.
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The many goldenrod species can be difficult to distinguish, due to their similar bright, golden yellow flower heads that bloom in late summer. Goldenrod is often unfairly blamed for causing\u00a0hay fever<\/a>\u00a0in humans. The pollen causing these allergy problems is mainly produced by\u00a0ragweed<\/a>\u00a0(Ambrosia sp.<\/i>), blooming at the same time as the goldenrod, but is wind-pollinated. Goldenrod\u00a0pollen<\/a>\u00a0is too heavy and sticky to be blown far from the flowers, and is thus mainly pollinated by insects.Frequent handling of goldenrod and other flowers, however, can cause allergic reactions, leading some florists to change occupation.
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Solidago<\/i>\u00a0species are easily recognized by their golden inflorescence with hundreds of small capitula, some species have their flowers in spike-like inflorescences and others have axillary\u00a0racemes<\/a>. They have slender\u00a0stems<\/a>, usually hairless but\u00a0S. canadensis<\/i>\u00a0shows hairs on the upper stem. They can grow to a length between 60\u00a0cm and 1.5 m. Their alternate leaves are linear to lanceolate. Their margins are usually finely to sharply serrated.<\/p>\n

Propagation is by wind-disseminated\u00a0seeds<\/a>\u00a0or by spreading underground\u00a0rhizomes<\/a>\u00a0which can form colonies of vegetative\u00a0clones<\/a>\u00a0of a single plant.<\/p>\n

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Goldenrod and visiting\u00a0Cerceris<\/a><\/i>\u00a0wasp<\/div>\n<\/div>\n<\/div>\n

They are mostly\u00a0short-day plants<\/a>\u00a0and bloom in late summer and early fall. Some species produce abundant nectar when moisture is plentiful, or when it is warm and sunny.<\/p>\n","protected":false},"excerpt":{"rendered":"

Solidago, commonly called\u00a0goldenrods, is a genus of about 100 species of\u00a0flowering plants\u00a0in the family\u00a0Asteraceae.\u00a0Most are…<\/p>\n","protected":false},"author":4,"featured_media":27028,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"image","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[224,188,212],"tags":[],"class_list":["post-27031","post","type-post","status-publish","format-image","has-post-thumbnail","hentry","category-news","category-plants","category-weekly-news","post_format-post-format-image"],"_links":{"self":[{"href":"https:\/\/archive2.ankakh.com\/index.php?rest_route=\/wp\/v2\/posts\/27031","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/archive2.ankakh.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/archive2.ankakh.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/archive2.ankakh.com\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/archive2.ankakh.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=27031"}],"version-history":[{"count":0,"href":"https:\/\/archive2.ankakh.com\/index.php?rest_route=\/wp\/v2\/posts\/27031\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/archive2.ankakh.com\/index.php?rest_route=\/wp\/v2\/media\/27028"}],"wp:attachment":[{"href":"https:\/\/archive2.ankakh.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=27031"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/archive2.ankakh.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=27031"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/archive2.ankakh.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=27031"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}