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Cirsium vulgare (spear thistle) is listed in the United States (where as a non-native invasive species it has been renamed "bull thistle") as a noxious weed in nine states. [6] Some species in particular are cultivated in gardens and wildflower plantings for their aesthetic value and/or to support pollinators such as bees and butterflies.
Cirsium silvaticum Tausch Cirsium vulgare , the spear thistle , bull thistle , or common thistle , is a species of the Asteraceae genus Cirsium , native throughout most of Europe (north to 66°N, locally 68°N), Western Asia (east to the Yenisei Valley), and northwestern Africa ( Atlas Mountains ).
Typically, an involucre with a clasping shape similar to a cup or urn subtends each of a thistle's flower heads. The typically feathery pappus of a ripe thistle flower is known as thistle-down. [1] The spininess varies considerably by species. For example, Cirsium heterophyllum has very soft spines while Cirsium spinosissimum is the opposite. [2]
Cirsium horridulum, called bristly thistle, purple thistle, or yellow thistle is a North American species of plants in the tribe Cardueae within the family Asteraceae. It is an annual or biennial . [ 2 ]
Cirsium occidentale, with the common name cobweb thistle or cobwebby thistle, is a North American species of thistle in the family Asteraceae. [ 3 ] Description
See this list of flower meanings with pictures to learn the symbolism and history behind some of your favorite blooms, including roses, irises and lilies.
This thistle's occurrence is linked to the spread of human agriculture from the mid-Holocene era or before. [9] It is a constant plant of several fen-meadow plant associations, including the Juncus subnodulosus-Cirsium palustre fen-meadow. [9] The flowers are visited by a wide variety of insects, featuring a generalised pollination syndrome. [10]
The language of flowers is a mystery to many. While there's a good chance you already know what roses symbolize (love, of course), you may be surprised to know the meaning behind some of your ...