参考文献
Genty, H.S. 1972. The Agave Family in Sonora. Agriculture Handbook. No.399.
Agriculture Research Service, United States Department of. Agriculture,
Washington, D.C., USA. (http://naldc.nal.usda.gov/download/CAT87209091/PDF)
Gentry, H.S. 1982. Agaves of Continental North America. The University
of Texas Press, Tuscon, Arizona, USA.
Irish, M., Irish, G. 2000. Agave, Yuccas, and Related Plants: A Gardener’s
Guide. Timber Press, Portland, Oregon, USA.