Opuntia lutea

References

1. [1]The Cactus Family — Anderson E.F. · Timber Press; Portland, Oregon · 2001 · ISBN 0-88192-498-9 ↩︎An excellent work, giving botanical descriptions of virtually all the cacti, together with their range (but not their habitats) and sometimes also a photo. it also contains a long chapter detailing the many uses of cacti and another on cultivation..
2. [2]Las Cactáceae de Guatemala — Véliz M.E. · Universidad de San Carlos de Guatemala, Guatemala · 2008 · ISBN 99922-2-551-3 ↩︎
3. [3]IUCN Red List of Threatened Species — http://www.iucnredlist.org/ ↩︎A list of plants under threat and facing possible extinction, usually with brief details of the threats and information on habitat.
4. [4]Trees and Shrubs of Mexico — Standley P.C. · Smithsonian Institution; Washington · 1926 ↩︎Although dated, it contains a wealth of information on the trees and shrubs of Mexico, including many of their uses. It can be downloaded from the Internet.
5. [5]Uses of Opuntia Species and the potential impact of Cactoblastis cactorum (Lepidoptera; Pyralidae) in Mexco — Vigueras A.L. & Portillo L. · 2001 ↩︎
6. [6]A natural history of the Sonoran Desert — Phillips S.J. & Comus P.W. · University of California Press; Los Angeles, California · 2000 · ISBN 0-520-22029-3 ↩︎
7. [PFAF]Plants for a Future — pfaf.org ↩︎