• Gardenia J. Colden, 1756 (unaccepted) [Family: Clusiaceae]
• Gardenia J. Ellis, 1761 [Family: Rubiaceae]
• Gardenia angusta (L.) Merr.
• Gardenia brighamii Mann
• Gardenia florida Linnaeus accepted as Gardenia angusta (L.) Merr.
• Gardenia jasminoides Ellis accepted as Gardenia angusta (L.) Merr.
• Gardenia mannii St. John & Kuykend.
• Gardenia remyi Mann
• Gardenia taitensis DC.
• Gardenia thunbergia L. f.
• Gardenia weissichii St. John accepted as Gardenia taitensis DC.
• Gardeniapites T.-C. Huang, 1978 †