Previous Steps

• 1b – Alternate leaf arrangement on stem — go to 18
  • 18b – Leaf compound — go to 58
    • 58b – More than 3 leaflets — go to 59

Current Step

• 59a – Entire or very finely serrate leaflet margins — go to 60

• 59b – Leaflet margins entire except at leaf base. Lobes on each side, like earlobes – go to Tree of Heaven

• 59c – Leaflet margins are medium-serrate — go to 64

• 59d – Leaftlet margins coarsely and irregularly serrate or lobed — Golden Raintree

Resources

• Identifying Broadleaf Flowering Trees and Shrubs, CMG GardenNotes #173
• List of trees in this key
• Glossary of Terms
• Front Range Tree Recommendation List
• Online CSU Extension publications on Tree and Shrub Selection