References

For Pereskia

Benson, L. 1982. The cacti of the United States and Canada. Stanford Univ. Press, Stanford, California. Google Scholar

Hawkes, M.W. 2003a. Pereskia. In Flora of North America Editorial Committee. 2003b. Flora of North America north of Mexico. Volume 4, Magnoliophyta: Caryophyllidae, part 1. Oxford Univ. Press, New York, NY. 559 pp. Google Scholar