Coronilla repanda 
Coronilla scorpioides 
Coues' Senna 
Cow vetch 
Cowpea 
Creeping Lespedeza 
Creeping Tick Trefoil 
Cretan Crownvetch 
Cretan Ebony 
Crimson clover 
Crimson Pea 
Crotalaria aegyptiaca 
Crotalaria deflersii 
Crown Medick 
Crownvetch 
Curtiss' milkwort 
Curve-pod Milk-vetch 
Cusped Vetch 
Cytisopsis pseudocytisus 
Cytisus hirsutus 
Cytisus jankae 
Cytisus procumbens 
Daviesia sejugata 
Delonix decaryi