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Plants
| Title | Common Name |
|---|---|
| Carum carvi | Krawyah; Kexbenz; Caraway; Hime-Uikyo; Karamankimyonu; Alcaravea |
| Casimiroa edulis | Cochitzapotl; Zapote Blanco; Wild Sapote; Weisse Sapote |
| Casimiroa sapota | Cochitzapotl |
| Cassia acutifolia | Senna; Sinameki Agaci |
| Cassia angustifolia | Senna; Sene Grandes Feuilles |
| Cassia fistula | Nanban-Saikati; Sember Hiyari Agaci; Kallober; Klohur; Baton Casse; Kachang kayu (Woody bean); Canafistula; Ch'Ang Kuo Tzu Shu; Keyok; Samyaka; Chacara; Klober |
| Catalpa bungei | Tzu; Ch'Iu; Chio Chio Ch'In |
| Catalpa kaempferi | Tzu |
| Catharanthus roseus | Chawa Pshila; Rattanjot; Adorna Patio; Catalana; Soldier'S Palm; Cangrejera; Libertine; A'In Al Bazzun; Fleur Des Meres; Dominica; Coneja; Madagascar Periwinkle; Flor Boba; Fleurs Des Roches; Periwinkle; Gezayir Benefshesi; Mujer Vegana |
| Caulophyllum thalictroides | Aslankulagi; Blue Cohosh |
| Ceanothus americanus | Ceanoto; Ceanote; Wild Snowball; New Jersey Tea; Redroot; Ceanothe; Sackelblume; Amerikaanse Ceanothus |
| Cecropia ambaiba | not available |
| Cecropia concolor | not available |
| Cecropia hololeuca | Imbahyba Branca |
| Cecropia palmata | Ambay |
| Cedrus libanensis | Cedar |
| Celastrus scandens | Waxwork; American Bittersweet; Falsa Dulcamara; Douce Amer De L'Amerique; Amerikaanse Bitterzoet; Bittersweet; Amerikanische Bittersuss |
| Celosia argentea | Ch'Ing Hsiang; Bayam merah (Red spinach); L.; Yeh Chi Kuan; Ts'Ing Hsiang Tsu; K'Un Lun Ts'Ao; Ts'Ao Chueh Ming; No-Geito |
| Centaurea centaurium | Centaury; Buyuk Kantaron |
| Centaurea nigra | Centauree Noire; Knapweed; Black Knapweed; Zwarte Knoop |