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Goldenrod is a common name for many species of flowering plants in the sunflower family, Asteraceae, commonly in reference to the genus Solidago. Several genera, such as Euthamia , were formerly included in a broader concept of the genus Solidago .
Goldenrod often is inaccurately said to cause hay fever in humans. [26] The pollen causing this allergic reaction is produced mainly by ragweed (Ambrosia sp.), blooming at the same time as the goldenrod and pollinated by wind. Goldenrod pollen is too heavy and sticky to be blown far from the flowers, and is pollinated mainly by insects. [26]
[3]: 211 Its common names include tall goldenrod [4] and giant goldenrod, [5] among others. Goldenrod is the state flower of Kentucky , [ 6 ] and Solidago gigantea is the state flower of Nebraska .
Solidago altissima, the tall goldenrod [5] or late goldenrod, [6] is a North American species of goldenrod in the family Asteraceae which is widespread across much of Canada, the United States, and northern Mexico. It is common in much of its range and fairly tolerant of landscapes which have been disturbed by humans.
Solidago rigida, known by the common names stiff goldenrod and stiff-leaved goldenrod, is a North American plant species in the family Asteraceae. It has a widespread distribution in Canada and the United States, where it is found primarily east of the Rocky Mountains . [ 2 ]
Solidago ptarmicoides, the prairie goldenrod, white flat-top goldenrod or upland white aster, is a North American perennial flowering plant in the family Asteraceae. [4] It is native to the central and eastern Canada (from New Brunswick to Manitoba) and parts of the United States (mostly Great Lakes region, the Northeast, the Ozarks, and the northern Great Plains, with isolated populations in ...
Solidago speciosa, the showy goldenrod, [4] [5] is a North American species of flowering plants in the family Asteraceae.It grows in the province of Ontario in central Canada, as well as in the eastern and central United States (from the Atlantic coast west as far as the Great Plains, so from Maine to Georgia (except Delaware) west as far as Texas, Nebraska, and the Dakotas).
Solidago rugosa, commonly called the wrinkleleaf goldenrod [2] or rough-stemmed goldenrod, [3] is a species of flowering plant in the family Asteraceae.It is native to North America, where it is widespread across eastern and central Canada (from Newfoundland to Ontario) and the eastern and central United States (Maine west as far as Wisconsin and Iowa, south to Florida and Texas). [4]