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Cirsium oleraceum, the cabbage thistle [3] or Siberian thistle, is a species of thistle in the genus Cirsium within the family Asteraceae, native to central and eastern Europe and Asia, where it grows in wet lowland soils. [4] Cirsium oleraceum is a herbaceous perennial plant growing to 1.5 m tall, the stems unbranched or with only a very few ...
The wild cardoon is a stout herbaceous perennial plant growing 0.8 to 1.5 m (31 to 59 in) tall, with deeply lobed and heavily spined green to grey-green tomentose (hairy or downy) leaves up to 50 cm (20 in) long, with yellow spines up to 3.5 cm long.
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.
The stiff leaves are usually pinnate with strong, yellow spines; the lowest leaves are up to 80 cm (30 in) long. The leaf margins are rolled over and the underside of the leaf is felted with white hair. The inflorescence is cymose with a few large flowers with a diameter of up to 7 cm (3 in). These are globular and densely covered with woolly hair.
As well, some thistle species are valued as ornamental garden plants. Perhaps the most famous thistle of all (actually not a “true” thistle, but related) is the species that provides us with ...
Thistle is the common name of a group of flowering plants characterized by leaves with sharp prickles on the margins, mostly in the family Asteraceae. Prickles can also occur all over the plant – on the stem and on the flat parts of the leaves. These prickles protect the plant from herbivores.
The Cardueae are a tribe of flowering plants in the daisy family and the subfamily Carduoideae. [5] Most of them are commonly known as thistles; [6] four of the best known genera are Carduus, [7] Cynara (containing the widely eaten artichoke), Cirsium, [7] and Onopordum. [7] They are annual, biennial, or perennial herbs.
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