Cnidoscolus angustidens Torr. in Rep. U.S. Mex. Bound., Bot. 2(1): 198. 1859 sec. Maya-Lastra & Steinmann 2018
- =Cnidoscolus angustidens Torr. subsp. angustidens in Rep. U.S. Mex. Bound., Bot. 2(1): 198. 1859 syn. sec. Maya-Lastra & Steinmann 2018
- =Jatropha angustidens (Torr.) Müll. Arg., Prodr. (DC.). 15(2): 1100. 1866 syn. sec. Maya-Lastra & Steinmann 2018
- =Cnidoscolus pringlei I.M. Johnst. in Contr. Gray Herb. 68: 85. 1923 syn. sec. Maya-Lastra & Steinmann 2018
- =Jatropha pringlei (I.M. Johnst.) Standl. in Contr. U.S. Natl. Herb. 23: 1670. 1926 syn. sec. Maya-Lastra & Steinmann 2018