1. The common European annual marigold
   - common marigold, pot marigold, ruddles, Calendula officinalis

Type of: calendula

• genus Comandra
• genus Comatula
• genus Combretum
• genus Commelina
• genus Commiphora
• genus Compsognathus
• genus Comptonia
• genus Condylura
• genus Conepatus
• genus Conferva
• genus Conilurus
• genus Coniogramme
• genus Conium
• genus Connarus
• genus Connochaetes
• genus Conocarpus
• genus Conoclinium
• genus Conopodium
• genus Conospermum
• genus Conradina
• genus Consolida
• genus Contopus
• genus Conuropsis
• genus Convallaria
• genus Convolvulus