Cryptogramma crispa (L.) R.Br. (Synonym : Osmunda crispa L.)

Family : Pteridaceae

Cryptomeria japonica (Thunb. ex L.f.) D.Don (Synonym : Cryptomeria japonica (Thunb. ex L.f.) D.Don var. sinensis Siebold & Zucc.)

Family : Cupressaceae

Cryptotaenia japonica Hassk. (Synonym : Deringa japonica (Hassk.) Koso-Pol.)

Family : Apiaceae

Cucumis melo L. (Synonym : Cucumis melo var. makuwa Makino)

Family : Cucurbitaceae

Cucumis sativus L.

Family : Cucurbitaceae

Cucurbita moschata Duchesne (Synonym : Cucurbita moschata var. toonas Makino)

Family : Cucurbitaceae

Cudrania tricuspidata (Carrière) Bureau ex Lavallée (Synonym : Morus integrifolia H.Lév. & Vaniot)

Family : Moraceae

Cunninghamia lanceolata (Lamb.) Hook. (Synonym : Belis lanceolata (Lamb.) Hoffmanns.)

Family : Cupressaceae

Cuscuta australis R.Br. (Synonym : Cuscuta rogowitschiana Trautv.)

Family : Convolvulaceae

Cuscuta campestris Yunck. (Synonym : Cuscuta pentagona Engelm. var. calycina Engelm.)

Family : Convolvulaceae [Naturalized plant]