1. Erect perennial of north temperate zone having pinnate leaves and a few nodding flowers with a brown-purple calyx and orange and pink petals
   - water avens, purple avens, chocolate root, Geum rivale

Type of: avens

• genus Chamaedaphne
• genus Chamaeleo
• genus Chamaeleon
• genus Chamaemelum
• genus Chara
• genus Charadrius
• genus Charina
• genus Charronia
• genus Chateura
• genus Chauna
• genus Cheilanthes
• genus Cheiranthus
• genus Chelidonium
• genus Chelifer
• genus Chelone
• genus Chelonia
• genus Chelydra
• genus Chenopodium
• genus Chilomastix
• genus Chilomeniscus
• genus Chilomycterus
• genus Chilopsis
• genus Chimaera
• genus Chimaphila
• genus Chimonanthus