Richardia tricocca (Torr. & A. Gray) Standl. in Publ. Field Mus. Nat. Hist., Bot. Ser. 8(5): 386. 1931 sec. Borhidi 2006
- =Diodia tetracocca (M. Martens & Galeotti) Hemsl., Diagn. Pl. Nov. Mexic. 2: 32. 1879 syn. sec. Borhidi 2006
- =Crusea allococca A. Gray in Proc. Amer. Acad. Arts 19: 78. 1883 ["1884"] syn. sec. Borhidi 2006
- =Crusea tricocca (Torr. & Gray) C. Heller in Contr. Herb. Frankl. & Marsh. Coll. 1: 97. 1895 syn. sec. Borhidi 2006
- =Richardsonia tetracocca (M. Martens & Galeotti) K. Schum. ex Loes. in Repert. Spec. Nov. Regni Veg. 18: 362. 1922 syn. sec. Borhidi 2006
- =Richardsonia tetracocca var. calvescens Loes. in Repert. Spec. Nov. Regni Veg. 18(19-30): 362. 1922 syn. sec. Borhidi 2006
- =Richardsonia tricocca (Torr. & Gray) K. Schum. ex Loes. in Repert. Spec. Nov. Regni Veg. 18: 362. 1922 syn. sec. Borhidi 2006