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Asteraceae (Composite or Sunflower Family)

Several invasive Composites have taken up residence here, ranging from the mildly irritating to the truly frightening. Canada Thistle and the Knapweeds are the worst.

• Acosta (Knapweed)
  • Acosta diffusa (Diffuse Knapweed)
  • Acosta maculosa (Spotted Knapweed)
• Breea (Canada Thistle)
  • Breea arvense (Canada Thistle)
• Carduus (Musk Thistle)
  • Carduus nutans (Musk Thistle)
• Cirsium (Bull Thistle)
  • Circium vulgare (Bull Thistle)
• Onopordum (Scotch Thistle)
  • Onopordum acanthium (Scotch Thistle)
• Tanacetum(False Dandelion)
  • Tanacetum vulgare (False Dandelion)
• Taraxacum (Dandelion)
  • Taraxacum officinale (Dandelion)
• Tragopogon (Salsify)
  • Tragopogon pratensis (Salsify, Oyster Plant)