This article is about the Asteraceae genus. Not to be confused with the Berberidaceae genus Gymnospermium or the non-flowering seed plants Gymnospermae.
^USDA, NRCS (n.d.). "Gymnosperma glutinosum". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 9 May 2015.
^Davidse, G., M. Sousa-Peña, S. Knapp & F. Chiang Cabrera. 2015. Asteraceae. 5(2): ined. In G. Davidse, M. Sousa Sánchez, S. Knapp & F. Chiang Cabrera (eds.) Flora Mesoamericana. Universidad Nacional Autónoma de México, México D.F.