Centipeda minima (L.) A.Braun & Asch. (Synonym : Artemisia sternutatoria Roxb.)

Family : Asteraceae

Centranthera cochinchinensis (Lour.) Merr. (Synonym : Centranthera cochinchinensis (Lour.) Merr. var. lutea (H.Hara) H.Hara)

Family : Scrophulariaceae

Cephalanthera erecta (Thunb.) Blume (Synonym : Serapias erecta Thunb.)

Family : Orchidaceae

Cephalanthera falcata (Thunb.) Blume (Synonym : Cephalanthera japonica A.Gray)

Family : Orchidaceae

Cephalanthera longibracteata Blume (Synonym : Serapias longibracteata (Blume) A.A.Eaton)

Family : Orchidaceae

Cephalanthera subaphylla Miyabe & Kudô (Synonym : Cephalanthera erecta (Thunb.) Blume f. subaphylla (Miyabe & Kudô) M.Hiroe)

Family : Orchidaceae

Cephalotaxus harringtonia (Knight ex J.Forbes) K.Koch (Synonym : Cephalotaxus koreana Nakai)

Family : Cephalotaxaceae

Cephalotaxus nana Nakai (Synonym : Cephalotaxus drupacea Siebold & Zucc. var. nana (Nakai) Rehder)

Family : Cephalotaxaceae

Cerastium fischerianum Ser. (Synonym : Cerastium fischerianum Ser. var. molle Ohwi)

Family : Caryophyllaceae

Cerastium glomeratum Thuill. (Synonym : Alsine glomerata (Thuill.) E.H.L.Krause)

Family : Caryophyllaceae [Naturalized plant]