Acta Botánica Mexicana - Instituto de Ecología, A C. (Instituto de Ecología, A C, 2018)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1920)

Flora del bajío y de regiones adyacentes - Instituto de Ecología, A C. (Instituto de Ecología, A C, 1996)

Madroño; a West American journal of botany - California Botanical Society. (California Botanical Society, 1947)

Phytoneuron (Guy L. Nesom, 2013)

Trees and shrubs of Mexico - Standley, Paul Carpenter, 1884 -1963 (Govt. Print. Off, 1923)

Wrightia - University of Texas at Dallas. (University of Texas at Dallas, 1961)