Previous Steps

• 1a – Opposite leaf arrangement on stem — go to 2
  • 2a – Leaf compound — go to 14
    • 14b – Leaves are palmately compound — go to 17

Current Step

• 17a – 7 (sometimes 5) oblanceolate to obovate leaflets, 4 to 10 inches long.  Sticky terminal bud — Horsechestnut

• 17b – 5 (sometimes 7) elliptic to ovate leaflets, 3 to 6 inches long.  Terminal bud not sticky — Ohio Buckeye

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