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

Type of: Aristolochia clematitis, birthwort

• colpocystitis
• colpocystocele
• colportage
• colporteur
• colposcope
• colposcopy
• colpoxerosis
• colt
• coltan
• colter
• coltish
• coltsfoot
• Coluber
• Coluber constrictor
• Coluber constrictor flaviventris
• Coluber hippocrepis
• colubrid
• colubrid snake
• Colubridae
• Colubrina
• colubrine
• colugo
• Columba
• Columba fasciata
• Columba livia