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  • muticum
  • Cirsium muticum, also known as swamp thistle, marsh thistle, dunce-nettle, or horsetops, is a North American species of plants in the sunflower family, native to central and eastern Canada and the central and eastern United States. (wikipedia.org)
  • Cirsium muticum was described by the French naturalist André Michaux in 1803. (wikipedia.org)
  • Cirsium muticum has been found across every province of Canada from Labrador and Newfoundland to Saskatchewan. (wikipedia.org)
  • Cirsium muticum is found mostly in alkaline swamps, wetlands, marshes and low forests but some races have been known to grow in wet alpine climates. (wikipedia.org)
  • Cirsium muticum is as host for some species of butterflies and moths, including the swamp metalmark butterfly (Calephelis muticum), a species that is currently undergoing risk assessment in the United States. (wikipedia.org)
  • Cirsium muticum is at risk primarily because it is a wetland plant, and North American wetlands have been much reduced in extent over the last two centuries. (wikipedia.org)
  • taxa
  • Federal and State of California Endangered species) All the taxa within Cirsium fontinale have erect stems with leaves very strongly wavy margins. (wikipedia.org)
  • weeds
  • Conversely however, the genus Cynara includes commercially important species of artichoke and some species regarded as major weeds are commercial sources of vegetable rennet used in commercial cheese making. (wikipedia.org)
  • grows
  • However, there are a number more smaller and very interesting species in the genus, some of which Steve Law grows and sells from his nursery Brighton Plants, which would suit hot and dry situations in rock gardens and sunny banks. (alpinegardensociety.net)