Family: Rutaceae

Origin, Description & Uses
Atalantia buxifolia (Chinese box orange) is native to southern China and parts of Indo-China, as well as Taiwan and the Philippines. It is a dense, slow-growing evergreen shrub or small tree in the citrus family (Rutaceae), typically forming a compact, rounded habit with glossy, dark green leaves and small, fragrant white flowers. These are followed by small orange to reddish fruits that resemble miniature citrus. The plant is sometimes used ornamentally in hedges, foundation plantings, and formal gardens due to its neat growth form, evergreen foliage, and tolerance of pruning. In some regions, related species in this group are also valued for their aromatic qualities and as wildlife-attracting shrubs.

Risks & Threats
Atalantia buxifolia is not currently known to be widely naturalized or invasive in Hawaiʻi and is generally considered low risk. However, as with many ornamental species in the citrus family, it has traits that warrant monitoring, including its ability to produce viable seed and persist in suitable warm climates. While there is no strong evidence of it spreading aggressively in island ecosystems, long-term behavior in Hawaiʻi’s diverse habitats is not fully documented. As a precaution, it is still recommended to favor low-risk or Hawaiian native species in landscaping to reduce the chance of future naturalization or unintended ecological impacts.

High Risk Traits:

• Found in temperate and tropical climates
  
• Sparingly naturalized in Florida
  
• Spiny
  
• Alternate host of citrus pathogens
  
• Tolerates shade (but prefers sun)
  
• Tolerates many soil types
  
• Self-compatible
  
• Fleshy-fruited and presumably adapted for bird dispersal

Low Risk Traits:

• No reports of invasiveness or detrimental impacts to date
  
• Non-toxic
  
• Barrier plant
  
• Slow growing
  
• Few-seeded fruit
  
• Seeds do not store well (no seed bank)