Schizocalyx

Schizocalyx is a genus of flowering plants in family Rubiaceae. It includes 9 species native to the tropical Americas, ranging from Costa Rica to Bolivia and southeastern Brazil.
 * Schizocalyx bracteosa Wedd.
 * Schizocalyx condoricus D.A.Neill & C.M.Taylor
 * Schizocalyx cuspidatus (A.St.-Hil.) Kainul. & B.Bremer
 * Schizocalyx multiflorus (Hook.f.) Kainul. & B.Bremer
 * Schizocalyx obovatus (K.Schum. ex Standl.) Kainul. & B.Bremer
 * Schizocalyx peruvianus (K.Krause) Kainul. & B.Bremer
 * Schizocalyx sterculioides (Standl.) Kainul. & B.Bremer
 * Schizocalyx truncatus C.M.Taylor
 * Schizocalyx veraguensis (Dwyer) Kainul. & B.Bremer