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 
Delonix elata