Family: Asteraceae

High Risk Traits:

• Elevation range exceeds 1000 m, demonstrating environmental versatility
  
• Thrives in tropical climates
  
• Potentially naturalizing on Hawaii Island; naturalized in the Galapagos
  
• A weedy species of disturbed sites and of several agricultural crops (although impacts to crops generally unspecified)
  
• Tolerates many soil types
  
• Able to form thickets in native range
  
• Reproduces by seed
  
• An annual, capable of reaching maturity in one growing season
  
• Seeds dispersed by wind, people and possibly other vectors
  
• Missing ecological information limits accuracy of risk prediction

Low Risk Traits:

• Despite weedines, evidence of serious negative impacts is lacking
  
• Unarmed (no spines, thorns or burrs)
  
• Palatable to browsing and grazing animals
  
• Non-toxic
  
• Edible and medicinal uses
  
• Not reported to spread vegetatively