Synthesis of the North American Flora

• Major plant group (5 attributes)
  
• Habit (10 attributes)
  
• Duration (3 attributes)
  
• Nativity (2 attributes)
  
• Weeds and invasive plants (3 attributes)
  
• Habitat (6 attributes)
  
• Morphology (10 attributes)
  
• Trophic level (3 attributes)
  
• Rarity and endemism (15 attributes)
  
• Human use plants (38 attributes)
  
• Toxicity (1 attribute)
  
• Native American medicinal uses (67 attributes)
  
• Plants that attract (3 attributes)
  
• U.S. federal lands (8 attributes)