Gutiérrez-Sánchez, R. I.; Castro-Castro, A.; González-Gallegos, J. G.; López-Enríquez, I. L.; Frías-Castro, A.

Synopsis of the Spurred Species of Lobelia section Stenotium (Campanulaceae) in Sierra Madre Occidental, Mexico, and the Description of Two New species

. Phytotaxa 2018, 338, 33–48.