1. Birthwort of the eastern United States woodlands
   - Virginia snakeroot, Virginia serpentaria, Aristolochia serpentaria

Type of: Aristolochia clematitis, birthwort

• arborolatry
• arborous
• arborvirus
• arborvitae
• arbour
• arbovirus
• arbutus
• Arbutus menziesii
• Arbutus unedo
• arc
• arc lamp
• arc light
• arc-boutant
• Arca
• arcade
• arcaded
• Arcadia
• arcadian
• Arcadic
• Arcadic dialect
• Arcado-Cyprians
• arcane
• Arcangelo Corelli
• arcanum
• arccos