Standl. 1924 - Standley PC, Killip EP, Britton NL, Rose JN (1924) TREES AND SHRUBS OF MEXICO (PASSIFLORACEAE-SCROPHULARIACEAE). Contributions From The United States National Herbarium 23(4): 849-1312. Retrieved from http://www.jstor.org/stable/23492516
There is no corrections for Heterocentron laxiflorum yet.