Family: Dicksoniaceae

High Risk Traits:

• Thrives in temperate & sub-tropical cool climates
  
• Grows in a variety of habitats, & elevation range exceeds 1000 m, demonstrating some environmental versatility
  
• Naturalized in Britain, & the Azores
  
• Environmental weed
  
• Other Dicksonia species have become invasive
  
• Potentially allelopathic
  
• Young fronds may contain toxins
  
• Shade tolerant
  
• Grows on many soil types (provided adequate moisture)
  
• Forms extensive stands in native range
  
• Capable of inter-gametophytic selfing
  
• Produces 1000s of wind-dispersed spores
  
• Can reproduce vegetatively
  
• Tolerates & will resprout after cutting or fires

Low Risk Traits:

• Would probably only threaten higher elevation ecosystems in tropical islands
  
• Unarmed (no spines, thorns or burrs)
  
• Palatable to ungulates and other browsing animals
  
• Ornamental
  
• Slow growth rate and reaches maturity after 20+ years