Family: Arecaceae

Arenga undulatifolia (aren gelora, bangkala) is a palm native to Borneo, Philippines (Palawan Island) and Indonesia (Sulawesi Island). The leaves of this palm can be used for thatching and wickerwork. The petiole of this plant serves the purpose of making blowpipe darts and arrows. There are no reports of invasiveness or naturalization, but also no evidence of introduction outside of its native range. This plant has fruits that may be toxic if consumed by humans, and other Arenga species may be invasive. Unknowns about this plant end up landing it in the evaluate category.

High Risk Traits:

• Elevation range exceeds 1000 m, demonstrating environmental versatility
  
• Thrives in tropical climates
  
• Other Arenga species may be invasive
  
• Fruit may be toxic if consumed by humans
  
• Seeds presumably dispersed by birds and intentionally by people
  
• May spread by suckering
  
• Limited ecological information makes accurate risk prediction difficult

Low Risk Traits:

• No reports of invasiveness or naturalization, but no evidence of widespread introduction outside native range
  
• Unarmed (no spines, thorns or burrs)
  
• Ornamental